Professor Jamie Angus

Professor of Audio Technology

  • Newton Building Room G58
  • T: +44 (0)161 295 4426
  • E: j.a.s.angus@salford.ac.uk
  • SEEK: Research profile

Biography

My interest in audio was crystallized at age 11 when I visited the WOR studios in NYC on a school trip in 1967. From then I was hooked, and spent much of my time reading about audio circuits, loudspeakers, and synthesizers. After secondary education in Scotland, I attended the University of Lethbridge in Alberta Canada where, in addition to my studies in physics, music, computing, drama and philosophy, I repaired their VCS3 synthesizer and so obtained coveted access to the electronic music lab.

I studied electronics at both undergraduate and doctoral levels at University of Kent in England until 1980. My thesis topic was the design, and implementation, of a general-purpose digital signal processor. I then spent three years in industry, at Standard Telecommunications Laboratories, working on integrated optics, speech coding, speech synthesis, and speech recognition.

In 1983, I became a lecturer at the University of York, England. I was one of the originators of the UK’s first music technology courses there in 1986.  In 2001, I was appointed as “Professor of Audio Technology” at the University of Salford, England.

I have invented the modulated and binary absorption diffuser structures, developed techniques for direct signal processing of one-bit signals and published work on the effect of wholly diffusing walls on studio acoustics. As well as my research interests I have a broad knowledge of electronics and acoustics including, analogue electronics, communications, acoustic and electromagnetic simulation, studio design and transducer design.

My research interests are in room acoustics, speech acoustics, novel diffuser designs, audio signal processing and CAD for acoustic design and virtual acoustics, in particular the application of modern graphics hardware for the computation. I have worked with Sony on direct signal processing of Super Audio CD (SACD) signals for professional applications. In addition to these research activities I teach audio and video signal processing, Psychoacoustics, Sound reproduction and audio and video coding. I have co-written two textbooks and have authored, or co-authored over 170 journal and conference papers and 4 patents.

I have been awarded an AES fellowship and the IOA Peter Barnet Memorial prize for my contributions to audio and acoustics.

For relaxation I play the drums and dance, but not at the same time.

Teaching

Pretty much any subject in computing, electronics, acoustics and Audio/Video Technology. At all levels.

At the moment: Digital Audio, and Electroacoustics 2nd year. BSc

Sound reproduction, and Audio and Video coding, 3rd year. BSc

Acoustics and Signal Statistics, Digital Signal Processing, and Studio Design, MSc

Research Interests

Qualifications and Memberships

BSc Electronics University of Kent. 1st Class Honours and top of the class.

PhD Electronics University of Kent.  Thesis title:  "The Design and Implementation of a General Purpose Signal Processor".

Fellow of the Audio Engineering Society

Publications

2013

178  Angus, Jamie A. S. “The Effect of Low Frequency Reflections on Stereo Images”, AES Convention: 134 (May 2013) Paper Number:

2012

177  J A S Angus, " Low frequency reflection control in listening rooms ", Proceedings of the Institute of Acoustics, Vol. 34, Pt. 6, 2012

176  J A S Angus, “Girls and STEM Education Today”, After Girl Power: What's Next?, 24-25 February 2012, University of York, UK

2011

175  J A S Angus, "Recorded Music Amplitude Statistics Revisited", Proceedings of the Institute of Acoustics, Vol. 33, Pt. 6, 2011

174  Angus, Jamie A. S. “A New Approach to Designing Decimation Filters for Oversampled A/D Converters”, AES Convention: 130 (May 2011) Paper Number: 8414

2010

173  K. Dadiotis, J. A. S. Angus and T. J. Cox, " Absorption grating diffusers ", 5ο Πανελλ¿νιο Συν¿δριο ΑΚΟΥΣΤΙΚΗ 2010, 4 to 6 October 2010, Athens, pp. 258-270, 2010, ISBN 978 - 960 - 89639 - 2 - 4.

172  K. Dadiotis, J. A. S. Angus and T. J. Cox, "Investigation into the accuracy of Boundary Element Modelling prediction of the scattered pressure distribution from partly absorbing surfaces", 5ο Πανελλ¿νιο Συν¿δριο ΑΚΟΥΣΤΙΚΗ 2010, 4 to 6 October 2010, Athens, pp. 156-167, 2010, ISBN 978 - 960 - 89639 - 2 - 4.

171  J A S Angus, "Approaches to Single Microphone Reverberation Measurement", Proceedings of the Institute of Acoustics, Vol. 32 Pt. 5 2010

170  R. J. Hughes, J. A. S. Angus, T. J. Cox, O. Umnova, G. A. Gehring, M. A. Pogson, D. M. Whittaker, "Volumetric Diffusers: Pseudorandom Cylinder Arrays on a Periodic Lattice," Journal of the Acoustical Society of America, Vol. 128(5), p2847 (2010)

169  M. A. Pogson, D. M. Whittaker, G. A. Gehring, R. J. Hughes, J. A. S. Angus and T. J. Cox, "Multiple Scattering Between Cylinders and a Schroeder Diffuser," Acta Acustica united with Acustica, Vol. 96, 292-299 (2010)

168  M. A. Pogson, D. M. Whittaker, G. A. Gehring, T. J. Cox, R. J. Hughes, and J. A. S. Angus, "Diffusive Benefits of Cylinders in Front of a Schroeder Diffuser," Journal of the Acoustical Society of America, Vol. 128, p1149 (2010)

167  Angus, Jamie A. S., Caunce, Andrew, “A GPGPU Approach to Improved Acoustic Finite Difference Time Domain Calculations” AES Convention: 128 (May 2010) Paper Number: 7963

166  Angus, Jamie A. S., “Closed and Vented Loudspeaker Alignments that Compensate for Nearby Room Boundaries”, AES Convention: 128 (May 2010) Paper Number: 7990

2009

165  J A S Angus, “Reflection control: how much absorption at a given frequency?”, Proceedings of the Institute of Acoustics, Vol 31, Part 6, 2009

164  R. J. Hughes, J. A. S. Angus, T. J. Cox and O. Umnova, "Volumetric Diffusion from Pseudorandom Periodic Cylinder Arrays," Presented at Euronoise, Edinburgh, Scotland (2009)

163  Angus, Jamie; Ball, Chris; Peeters, Thomas; Williams, Rowan, “Krasner’s Audio Coder Revisited”, AES Convention: 126 (May 2009) Paper Number: 7715.

162  Angus, Jamie, “A New Analog Input Topology for Extreme Dynamic Range Analog to Digital Conversion”, AES Convention: 126 (May 2009) Paper Number: 7801

2008

161  J A S Angus, "The effect of diffusers on low frequency modes", Proceedings of the Institute of Acoustics, Vol 30, Part 6, 2008. pp107-118.

160  R. J. Hughes, J. A. S. Angus, T. J. Cox and O. Umnova, "Volumetric Diffusers," Proceedings of the 124th Convention of the Audio Engineering Society, Amsterdam, The Netherlands (2008)

159  T. J. Cox, R. J. Hughes, J. A. S. Angus, D. M. Whittaker, M. Pogson, and G. A. Gehring, "Volume Diffusers Inspired by Percolation Fractals," Proceedings of the Institute of Acoustics, Oslo, Norway (2008)

158  K. Dadiotis, J. A. S. Angus and T. J. Cox, "Lüke and power residue sequence diffusers", The Journal of the Acoustical Society of America, vol. 123, pp. 2035-2042, 2008.

2007

157  D. C. Waddington and J. A. Angus, "An acoustic spread spectrum technique for the study of outdoor noise propagation," The Journal of the Acoustical Society of America, vol. 121, pp. 3153, 2007.

156  D. C. Waddington, J. A. Angus, and Y. W. Lam, "Environmental noise measurements using a coded signal," The Journal of the Acoustical Society of America, vol. 122, pp. 2964, 2007.

155  D. C. Waddington and J. A. S. Angus, "A spread spectrum technique for the study of outdoor noise propagation," The Journal of the Acoustical Society of America, vol. 122, pp. 2669-2678, 2007.

154  K. Dadiotis, J. A. S. Angus and T. J. Cox, "Diffusers with Extended Frequency Range", Audio Engineering Society 123rd Convention, New York, October 2007, preprint #7193.

153  K. Dadiotis, T. J. Cox and J. A. S. Angus, "Lüke and Power Residue Sequences", 19th International Congress on Acoustics ICA2007, Madrid, 2-7 September 2007, paper RBA-11-005-IP

152  J. A. Angus and D. C. Waddington, "Spread spectrum sequence design for the study of outdoor noise propagation," The Journal of the Acoustical Society of America, vol. 121, pp. 3155, 2007.

151  J. A. Angus, D. C. Waddington, and P. J. Duncan, "A coded signal technique for the study of environmental noise propagation," The Journal of the Acoustical Society of America, vol. 122, pp. 3073, 2007.

150  E C Payne-Johnson, G A Gehring, J A S Angus, "Improvements to Binary Amplitude Diffusers", Audio Engineering Society 122nd Convention, Vienna, May 2007, preprint #7143.

149  D. C. Waddington and J A S Angus, "An MLS Method for Non-Stationary and Outdoor Acoustic Paths", Audio Engineering Society 122nd Convention, Vienna, May, 2007, preprint #7144.

2006

148  J A S Angus, "A Comparison of the Performance of 'Pruned Tree' versus 'Stack" Algorithms for Look-Ahead Sigma delta Modulators", Journal of the Audio Engineering Society, Volume 54, Number 6, pp. 125-133; June 2006

147  T. J. Cox, J. A. S. Angus, P. D'Antonio, ‘Ternary and quadriphase sequence diffusers’," The Journal of the Acoustical Society of America, vol. 119, Number 1, pp. 310-319, Jan 2006.

146  David Waddington, James A S Angus, (2006),Correlation techniques for the study of outdoor noise propagation, Proceedings of the 35th International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2006), Honolulu, Hawaii

145  D. C. Waddington and J. A. S. Angus, "A Spread Spectrum Technique for the Study of Outdoor Noise Propagation," presented at Proc. of the 12th International Symposium on Long Range Sound Propagation, New Orleans, LA, USA, 2006.

144  J A S Angus, "Non-Uniformly Sampled Loudspeaker Arrays", Proceedings of the Institute of Acoustics, Vol 28, Part 8, 2006. pp107-118.

143  J A S Angus, S Hoare, "The Performance of Look-Ahead Sigma-Delta Modulators with Unstable Noise Shaping Filters", Audio Engineering Society 121st Convention, San Francisco, USA, October, 2006, preprint #6865.

2005

142  J A S Angus, "Spherical Chickens And Sound Reinforcement: How Fourier Rules The Roost", Proceedings of the Institute of Acoustics, Vol 27, Part 5, 2005.

141  J A S Angus, “A Comparison of the Performance of “Pruned Tree” Versus “Stack” Algorithms for Look-Ahead Sigma Delta Modulators ", Audio Engineering Society 119th Convention, New York, USA, October, 2005, preprint #6450.

140  T. J. Cox, J. A. S. Angus and P. D'Antonio, "Ternary sequence diffusers" Forum Acusticum, Budapest (2005).

139  J A S Angus, "The Effect of Noise Transfer Function Shape on Idle Tones in Sigma-Delta Modulator", Audio Engineering Society 118th Convention, May, 2005, Barcelona, Spain, preprint #6450.

2004

138  J A S Angus, "Idle Tones In SA-CD DSD Encoders: Which Noise Shape Is Best?", Proceedings of the Institute of Acoustics, Vol 26, Part 8, 2004.

137  J A S Angus, "Implementation of "Tree" and “Stack” Algorithms for Look-Ahead Sigma Delta Modulators", Audio Engineering Society 117th Convention, San Francisco, USA, October, 2004, preprint #6281.

136  J A S Angus, " A New Method of Applying High Levels of Dither to Delta-Sigma Modulators", Audio Engineering Society 117th Convention, San Francisco, USA, October, 2004, preprint #6296 .

135  J A S Angus, "A New Approach to Effective Dither in Delta-Sigma Modulation Systems", Audio Engineering Society 116th Convention, Berlin, May, 2004, preprint #6147.

2003

134  J A S Angus, T Jackson, "Lossless Signal Processing with Complex Mersenne Transforms", Audio Engineering Society 115th Convention, New York, USA, October, 2003, preprint #5928.

133  J A S Angus, "Efficient Algorithms for Look-Ahead Sigma-Delta Modulators", Audio Engineering Society 115th Convention, New York, USA, October, 2003, preprint #5950.

132  T J Cox, J A S Angus, M R Avis and L. Xiao, "Sequences For Active Impedance Gratings," Surface Acoustics Symposium, proc. IoA(UK), 25(5) (2003).

131  T J Cox, J A S Angus, P D'Antonio, "The performance of Schroeder Diffusers: a wide band BEM investigation" Surface Acoustics Symposium, proc. IoA(UK), 25(5) (2003).

130  J A S Angus, "Tree Based Lookahead Sigma Delta Modulators", Audio Engineering Society 114th Convention, Amsterdam, February, 2003, preprint #5825.

2002

129  J A S Angus, "Sparse Loudspeaker Arrays And Their Design", Proceedings of the Institute of Acoustics, Vol 24, Part 8, 2002.

128  J A S Angus, " The Effect of Idle Tone Structure on Effective Dither in Delta-Sigma Modulation Systems: Part 2", Audio Engineering Society 113th Convention, Los Angeles, USA, September, 2002, preprint #5692.

127  J A S Angus, "The Effect of Idle Tone Structure on Effective Dither in Delta-Sigma Modulation Systems", Audio Engineering Society 112th Convention, Munich, April, 2002, preprint #5619.

2001

126  J A S Angus, "The Effects of Specular Versus Diffuse Reflections on the Frequency Response at the Listener”, Journal of the Audio Engineering Society, Volume 49 Number, 3 pp. 125-133; March 2001

125  J A S Angus, "Effective Dither in High Order Sigma-Delta Modulators", Audio Engineering Society 111th Convention, New York, USA, November, 2001, preprint #5478.

124  J A S Angus, "Achieving Effective Dither in the Super Audio CD Format", Proceedings of the Institute of Acoustics, Vol 23, Part 8, 2001, pp221-230

123  J A S Angus, "The Practical Performance Limits of multi-bit Sigma-Delta modulation", Audio Engineering Society 110th Convention, Amsterdam, April, 2001, preprint #5394.

122  J A S Angus, " Achieving Effective Dither in Delta-Sigma Modulation Systems", Audio Engineering Society 110th Convention, Amsterdam, April, 2001, preprint #5393.

121  J A S Angus, "The Effects of Specular Versus Diffuse Reflections on the Frequency Response at the Listener”, Journal of the Audio Engineering Society,Volume 49 Number 3 pp. 125-133; March 2001

2000

120   J A S Angus, "Diffuser design using Huffman sequences", Proceedings of the Institute of Acoustics, Vol 22, Part 8, 2000, pp 

119   J A S Angus, "Distributed Mode Loudspeaker Resonance Structures", Audio Engineering Society 109th Convention, 24-27 September 2000, Los Angeles, USA, preprint #.

118   M J Evans, J A S Angus, and A I Tew,  "Perceived performance of loudspeaker spatialised speech for teleconferencing", Journal of the Audio Engineering Society, Vol 48, no 9, September 2000, pp. 771-785

117   James A.S. Angus, “Using Grating Modulation to Achieve Wideband Large Area Diffusers”, Applied Acoustics, vol. 60, no. 2, 2000, pp. 143-165.

116   J A S Angus, "Distributed Mode Loudspeaker Radiation Mechanisms", Audio Engineering Society 108th Convention, 19-22 February 2000, Paris, France, preprint #5164.

115   J A S Angus, "Direct Digital Processing of "Super Audio CD" Signals", Audio Engineering Society 108th Convention, 19-22 February 2000, Paris, France, preprint #5102.

1999

114   J A S Angus, " Radiation Mechanisms in DML Loudspeakers", Proceedings of the Institute of Acoustics, Vol 21, Part 8, 1999, pp 19-32.

113   J. A. S. Angus, “Implementing Lossless Finite Impulse Response Filters Using Finite-Field Transforms", Audio Engineering Society 107th Convention, 24-27 September 1999, New York, USA, preprint #5069.

112   J. A. S. Angus, “Non-Integer-Based Diffusers", Audio Engineering Society 107th Convention, 24-27 September 1999, New York, USA, preprint #5064.

111   J. A. S. Angus, “Distributed Mode Loudspeaker Polar Patterns", Audio Engineering Society 107th Convention, 24-27 September 1999, New York, USA, preprint #5065.

110   J. A. S. Angus, “The Effect of Diffusers on Frequency-Dependent Room Mode Decay", Audio Engineering Society 107th Convention, 24-27 September 1999, New York, USA, preprint #5060.

109   J A S Angus, and P D'Antonio, "Two-Dimensional Binary Amplitude Diffusers", Audio Engineering Society 107th Convention, 24-27 September 1999, New York, USA, preprint #5061.

108   J A S Angus, "The Balloon Dance in Electroacoustics", Proceedings of the Institute of Acoustics, Vol 21, 1999.

107   J A S Angus, "Implementing Lossless Audio Signal Processing with Finite Field Transforms", Audio Engineering Society 106th Convention, 8-11 May 1999, Munich, Germany, preprint #4957.

106   J A S Angus, "The Effects of Specular Versus Diffuse Reflections on the Frequency Response at the listener", Audio Engineering Society 106th Convention, 8-11 May 1999, Munich, Germany, preprint #4938.

1998

105   J A S Angus and C I McManmon "Orthogonal Sequence Modulated Phase Reflection Gratings for Wideband Diffusion", Journal of the Audio Engineering Society, Vol 46, no 12, December 1998, pp 1109-1118.

104   J A S Angus, "The Effect of Diffusing Boundaries on Low Frequency Room Modes", "Journèe d'Ètude: Acoustique des Cabines de Controle" of the Sociètè Française d'Acoustique, December 8th, Paris 1998. Invited paper.

103   J A S Angus and D M Howard, "Fundamental Frequency Estimation for use with a Singing Pitching Development System for Primary School Children", Proceedings of the Institute of Acoustics, Vol 20 Part 6, 1998, pp 155-162.

102   D M Howard and J A S Angus, "Real-time Visual Feedback and the Development of Singing Pitching Skills in Primary School Children", Proceedings of the Institute of Acoustics, Vol 20 Part 6, 1998, pp 223-230.

101   J A S Angus, "Frequency Response Effects of Specular Versus Diffuse Reflections", Proceedings of the Institute of Acoustics, Vol 20, Part 5, 1998, pp 83-92.

100   M J Evans, J A S Angus, and A I Tew, "Analyzing Head-Related Transfer Function Measurements using Surface Spherical Harmonics", Journal of the Acoustical Society of America, vol 104, no 4, October, 1998, pp 2400-2411.

99    J A S Angus, " Diffuser Assessment Using Surface Spherical Harmonics ", Acoustical Society of America 136th Meeting, 12-16 October 1998, Norfolk, Virginia, USA, paper 5aAA4.  Invited paper.

98    J A S Angus, "Finite Field Transforms for Lossless Audio Signal Processing", Audio Engineering Society 105th Convention, 26-29 September 1998, San Francisco, USA, preprint #4837.

97    S Draper and J A S Angus, "Control Methods for Sigma-Delta Based Audio Equalisers", Audio Engineering Society 105th Convention, 26-29 September 1998, San Francisco, USA, preprint #4819.

96    C D Entwistle, T J Sargeant and J A S Angus, "Wideband Fractal Diffusers Using Orthogonal Modulated Sequences", Audio Engineering Society 105th Convention, 26-29 September 1998, San Francisco, USA, preprint #4833.

95    J A S Angus, "A New Method for Analysing the Effects of End-to-End Jitter in Digital, Audio Systems", Audio Engineering Society 104th Convention, 16th-19th May 1998, Amsterdam, preprint #4716.

94    J A S Angus and M J Evans, "Polar Pattern Measurement and Representation with Surface Spherical Harmonics", Audio Engineering Society 104th Convention, 16th-19th May 1998, Amsterdam, preprint #4717.

93    J A S Angus and S Draper, "An Improved Method For Directly Filtering S-D Audio Signals", Audio Engineering Society 104th Convention, 16th-19th May 1998, Amsterdam, preprint #4737.

92    M.J  Evans, A I Tew and J A S Angus "Relative Spatialisation Performance of Ambisonic and Transaural Speech", Audio Engineering Society 104th Convention, 16th-19th May 1998, Amsterdam, preprint #4668.

91    J A S Angus, "One Bit Digital Filtering". IEE Colloquium on Digital Filters an Enabling Technology. IEE Colloquium Digest  1998/252. 20 April, 1998.

1997

90    D M Howard and J A S Angus, "A Comparison Between Singing Pitching Strategies of 8 to 11 Year Olds and Trained Adult Singers", Logopaedics Phoniatrics Vocology, vol 22, no 4, 1997, pp 169-176.

89    J A S Angus, J Clegg, A C Marvin, and J F Dawson, "The Effect Of Diffusers on Screened Room Mode Decay and Density". Cost report

88    M.J  Evans, A I Tew and J A S Angus "Spatial Audio Teleconferencing - Which Way is Better?", ICAD '97 - The Fourth International Conference on Auditory Display, November 1997, Palo Alto CA

87    J A S Angus and M J Evans, "Analysing Loudspeaker Polar Pattern Measurements using Surface Spherical Harmonics", Proceedings of the Institute of Acoustics, Vol 19, Part 6, 1997, pp 21-30.

86    J A S Angus, "A New Method for Analysing the Effects of Jitter in Digital Audio Systems", Audio Engineering Society 103rd Convention, 26-29 September 1997, New York, USA, preprint #4607.

85    J A S Angus, "Lossless Audio Signal Processing", Audio Engineering Society 103rd Convention, 26-29 September 1997, New York, USA, preprint #4632.

84    J A S Angus, "Backward Adaptive Lossless Coding of Audio Signals", Audio Engineering Society 103rd Convention, 26-29 September 1997, New York, USA, preprint #4631.

83    J A S Angus,and A Simpson, "Wideband Two Dimensional Diffusers Using Orthogonal Modulated Sequences", Audio Engineering Society 103rd Convention, 26-29 September 1997, New York, USA, preprint #4640.

82    M J Evans, J A S Angus, and A I Tew, "Spherical Harmonic Spectra of Head-Related Transfer Functions", Audio Engineering Society 103rd Convention, 26-29 September 1997, New York, USA, preprint #4571.

81    J A S Angus, and D M Howard, "Interval Pitching Accuracy of Children Aged 7 to 11", Audio Engineering Society 103rd Convention, 26-29 September 1997, New York, USA, preprint #4584.

80    J A S Angus, "One Bit Audio Recording: Why I Have Always Liked Analogue Tape", Audio Engineering Society Dutch Section Meeting on DSD recording, 16th April 1997 Amsterdam  Invited paper.

79    J A S Angus and N M Casey, "Filtering S-D Audio Signals Directly", Audio Engineering Society 102nd Convention, 22-25 March 1997, Munich, Germany, preprint #4445.

78    J A S Angus, "The Behaviour of Rooms at Low Frequencies", Audio Engineering Society 102nd Convention, 22-25 March 1997, Munich, Germany, preprint #4421 Invited paper.

77    J A S Angus, "Controlling Early Reflections using Diffusion", Audio Engineering Society 102nd Convention, 22-25 March 1997, Munich, Germany, preprint #4405.

76    A E Ward and J A S Angus, "The Effect of Rooms on Multiple Loudspeaker Loading at Low Frequencies", Audio Engineering Society 102nd Convention, 22-25 March 1997, Munich, Germany, preprint #4413.

75    M J Evans, A I Tew, and J A S Angus, "The Perceived Performance of Spatialized Speech Using a Spherical Harmonic Model of Head-Related Transfer Functions", Audio Engineering Society 102nd Convention, 22-25 March 1997, Munich, Germany, preprint #4406.

1996

74    J A Edwards and J A S Angus, "Using Phase-Plane Plots to Assess Glottal Inverse Filtering", Proceedings of the Institute of Acoustics, Vol 18, Part 9, 1996, pp 155-162.

73    J A S Angus, J A Edwards and C Thomas, "A Novel Technique for the Inverse Filtering of Speech", Proceedings of the Institute of Acoustics, Vol 18, Part 9, 1996, pp 131-138.

72    J A S Angus and D M Howard, "Singing Pitching Accuracy in Children Aged 7 to 11", Proceedings of the Institute of Acoustics, Vol 18 Part 9, 1996, pp 357-364.

71    J A S Angus, "Loudspeaker Design in the Presence of Walls", Acoustics Bulletin, Vol 21 no 5, October 1996, pp 13-17.

70    M J Evans, J A S Angus, and A I Tew, "A Spherical Harmonic Analysis of Head-Related Transfer Function Measurements", Proceedings of the Institute of Acoustics, Vol 18, Part 8, 1996, pp 191-200.

69    J A S Angus, "The Reflection Full Zone", Proceedings of the Institute of Acoustics, Vol 18, Part 8, 1996, pp 235-244.

68    A E Ward and J A S Angus, "The Effect of A 6 Walled Room on Loudspeaker Output", Proceedings of the Institute of Acoustics, Vol 18, Part 8, 1996, pp 253-262.

67    Clegg J, Marvin A C, Angus J A S Dawson J F, "Optimal phase reflection gratings and the effect on fields in a mode stirred chamber", Proceedings of EMC ROMA 1996 International Symposium on EMC, Rome, 13-16 September 1996. pp 867-872.

66    Clegg J, Angus J A S, Marvin A C, Dawson J F, "A method for increasing mode density in a reverberant screened room", IEE Proceedings Science, Measurement and Technology, Vol. 143, No. 4, July 1996, pp 216-220.

65    J A S Angus and C I Mcmanmon "Orthogonal Sequence Modulated Phase Reflection Gratings for Wideband Diffusion", Audio Engineering Society 100th Convention, 11-14 May 1996, Copenhagen, Denmark, preprint #4249.

64    J A S Angus, D M Howard and G F Welch, "Singing Pitching Accuracy in Children Aged 7 to 11", Audio Engineering Society 100th Convention, 11-14 May 1996, Copenhagen, Denmark, preprint #4152.

63    J A S Angus, A C Marvin, J Clegg and J F Dawson, "Diffuse Versus Non-Diffuse Energy and the Effect of Acoustic Diffusers", Audio Engineering Society 100th Convention, 11-14 May 1996, Copenhagen, Denmark, preprint #4250.

62    J A Edwards and J A S Angus, "Using Phase-Plane Plots to Asses Glottal Inverse Filtering", Electronics Letters, Vol 32 Part 3, 1st February 1996, pp 192-193.

1995

61    J A S Angus and D M Howard "Speech Intelligibility: What's The Problem?", Proceedings of the Institute of Acoustics, Vol 17 Part 7, 1995, pp 1-14.  Invited keynote paper.

60    J A S Angus, A C Marvin, J Clegg, J F Dawson, and A Knobloch, "Improvements in Room Mode Decay due to Acoustic Diffusers", Proceedings of the Institute of Acoustics, Vol 17 Part 7, 1995, pp 57-66.

59    J A S Angus, "Modulated Phase Reflection Gratings for Even Diffusion Characteristics", Proceedings of the Institute of Acoustics, Vol 17 Part 7, 1995, pp 67-86.

58    A C Marvin, J A S Angus, J Clegg, and J F Dawson, "A Method for Increasing the Mode Density in a Reverberant Screened Room", The British Electromagnetic Measurements Conference, 7-9 November 1995, Malvern, UK.

57    J A S Angus, "Using Modulated Phase Reflection Gratings to Achieve Specific Diffusion Characteristics", Audio Engineering Society 99th Convention, 6-9 October 1995, New York, USA, preprint #4117.

56    J A S Angus, A C Marvin, J Clegg, J F Dawson, and A Knobloch, "The Effect of Acoustic Diffusers on Room Mode Decay", Audio Engineering Society 99th Convention, 6-9 October 1995, New York, USA, #4116.

55    A C Marvin, J Clegg, J A S Angus and J F Dawson, "The Use of Phase Reflection Gratings in a Screened Room", IEE Colloquium on EMC Tests in Screened Rooms, IEE Colloquium Digest 1995/074, 11 April, 1995.

54    J A S Angus, "Sound Diffusers using Reactive Absorption Gratings", Audio Engineering Society 98th Convention, 25-28 February 1995, Paris, preprint #3953.

53    J A S Angus, "Large Area Diffusers using Modulated Phase Reflection Gratings", Audio Engineering Society 98th Convention, 25-28 February 1995, Paris, preprint #3954.

52    J A S Angus, A C Marvin, J Clegg, and J F Dawson, "A Practical Metric For Evaluating Sound Diffusers", Audio Engineering Society 98th Convention, 25-28 February 1995, Paris, preprint #3955.

1994

51    J A S Angus, A C Marvin and J Clegg, "The Effect of Acoustic Diffusers on Room Mode Density", Audio Engineering Society 96th Convention, 26 February-1 March 1994, Amsterdam, preprint #3851.

50    J A S Angus, "The One Bit Alternative for Audio Processing and Mastering", Proceedings of the Audio Engineering Society Conference on Managing the Bit Budget, 16th-17th May 1994 London, pub AES, pp 34-40 Invited paper.

49    A C Marvin J A S Angus and J Clegg, and J F Dawson, "Enhancements to stirred mode chambers by the use of  pseudo-random phase reflection gratings" Proceedings of the EMC'94 ROMA International Symposium on EMC  Rome, 13-16 September 1994.  pp 218-221.

48    J A S Angus, "Designing Loudspeakers with Three Walls", Proceedings of the Institute of Acoustics, Vol 16 Part 4, 1994, pp 245-252.

47    J A S Angus, "Amplitude Gratings as Acoustic Diffusers", Proceedings of the Institute of Acoustics, Vol 16 Part 4, 1994, pp 291-297.

46    J A S Angus and R Smart, "The Voice-Stick: a Voice Controlled Sega Joystick", Proceedings of the Institute of Acoustics, Vol 16 Part 5, 1994, pp 89-96.

45    D M Howard, J A S Angus and G F Welch, "Singing Pitching Accuracy from Years 3 to 6 in a Primary School", Proceedings of the Institute of Acoustics, Vol 16 Part 5, 1994, pp 223-230.

44    J A S Angus and A Priyasantha, "A Microprocessor Implementation of a Hearing Bandwidth Tester", Proceedings of the Institute of Acoustics, Vol 16 Part 5, 1994,     pp 285-292.

1993

43    N M Casey and J A S Angus, "One Bit Digital Processing of Audio Signals", Audio Engineering Society 95th Convention, 7-10 October 1993, New York, USA, preprint #3717.

42    J A S Angus, S M Kershaw and A Lewis, "An Adaptive Beam-Steering Microphone Array Implemented on the Motorola DSP56000 Digital Signal Processor", Audio Engineering Society 95th Convention, 7-10 October 1993, New York, USA, preprint #3761.

41    J A S Angus, A C Marvin and J Clegg, "The Effect of Acoustic Diffusers on Room Modes", Proceedings of the Institute of Acoustics, Vol 15 Part 7, 1993, pp 237-246.

40    N M Casey and J A S Angus, "One Bit Digital Processing of Audio Signals", Proceedings of the Institute of Acoustics, Vol 15 Part 7, 1993, pp 255-264.

1992

39    J A S Angus, "The York First Year Project Competition:  An Integrated Approach to Design",  Proceedings of the Sixth Conference on The Teaching of Electronic Engineering Degree Courses, 7-9 April 1992, Hull.

38    J A S Angus, "Alternative Diffuser Sequences", Proceedings of the Institute of Acoustics, Vol 14 Part 5, 1992, pp 193-202.

37    J A S Angus and R M Claxton, "A Public Address Time Alignment Instrument", Proceedings of the Institute of Acoustics, Vol 14 Part 5, 1992, pp 217-224.

36    J A S Angus, S M Kershaw and A Lewis, "An Adaptive Beam-Steering Microphone Array Implemented on the Motorola DSP56000 Digital Signal Processor", Proceedings of the Institute of Acoustics, Vol 14 Part 5, 1992, pp 245-252.

35    J A S Angus, B Hancock and M R Chaplin, "A Tactile Peak Programme Meter for Blind Sound Engineers", Proceedings of the Institute of Acoustics, Vol 14 Part 5, 1992,      pp 253-258.

34    J A S Angus and M Bennet, "The Speech Activity Centre: a Speech Training Aid for Pre-Lingual Children", Proceedings of the Institute of Acoustics, Vol 14 Part 6, 1992,      pp 101-108.

33    C M Barnes and J A S Angus, "Real Time Pitch Extraction with Real World Constraints", Proceedings of the Institute of Acoustics, Vol 14 Part 6, 1992, pp 49-56.

32    M D Edgington and J A S Angus, "A Transform Method for Generating Perceptually Biased Spectrograms", Proceedings of the Institute of Acoustics, Vol 14 Part 6, 1992, pp 569-576.

1991

31    J A S Angus and T Whitehouse, "DIGI-4:  An Economical Approach to 4 Channel Digital Recording", Audio Engineering Society 90th Convention, 19-23 February, 1991, Paris, France.

30    J A S Angus and N J Malyon, "Audio Level Monitoring for Blind Sound Engineers/Recordists", Audio Engineering Society 91st Convention, 4-8 October 1991, New York, USA

29    J A S Angus, "EMC and the Choke Fed Power Supply" Proceedings of the Institute of Acoustics, Vol 13 Part 7, 1991 pp 155-166.

28    J A S Angus and N F Malyon, "APLIS:  An Audio Peak Level Monitoring System for Blind Sound Recordists", Proceedings of the Institute of Acoustics, Vol 13 Part 7, 1991      pp 247-264.

1990

27    J A S Angus and M T Whitaker, "Audio Spectral Analysis using the Winograd Fourier Transform", Acoustics Bulletin, Vol 15 no 2, April 1990, pp 7-11.

26    J A S Angus, "Speech Training Aids for Small Children".  Proceedings of the International Conference on the Role and Impact of Information Technology in the Assessment and Rehabilitation of Individuals with Communication Disorders, Porto Carras, Greece, 5-9 September 1990.  Invited Paper.

25    J A S Angus and C M Barnes, "On The Audibility of Transient Pitch Shifts" Proceedings of the Institute of Acoustics, Vol 12 part 8, 1990, pp 33-40.

24    J A S Angus and M D Edgington, "An Algorithm for Pitch Detection Of Non Stationary Speech" Proceedings of the Institute of Acoustics, Vol 12 part 9, 1990, pp 339-346.

23    J A S Angus and J F Read, "Speech Training Aids for Small Children", Proceedings of the Institute of Acoustics, Vol 12 part 9, 1990, pp 55-61.

1989

22    J A S Angus, "Tandeming Effects in Noise Reduction Systems", Proceedings of The Institute of Acoustics, Vol 11, Part 7, 1989, pp 323-330.

1988

21    J A S Angus and M D Kendall, "A Speech Training Aid for Deaf Children Employing Tracking Filters for Formant Extraction", Proceedings of the Institute of Acoustics, Vol 10, Part 2, 1988, pp 169-178.

20    J A S Angus and K J Moon, "Two Dimensional Vector Quantisation for Better Perceived Quality", Speech 88:  Proceedings of the 7th FASE Symposium, August 1988, Vol 4, pp 1329-1334.

19    J A S Angus and M D Kendall, "A Speech Training Aid, Employing Tracking Filters for Formant Extraction, For Deaf Children", Speech 88: Proceedings of the 7th FASE symposium, August 1988, Vol 1, pp 171-178.

18    J A S Angus, "Open Loop Distortion of Operational Amplifiers and its Implications for High Quality Audio System Design", Proceedings of the Institute of Acoustics, Vol 10, Part 7, 1988, pp 81-88.

17    J A S Angus and S P Norris, "Digital Generation of Musical Instrument Sounds via Stochastic Techniques", Proceedings of the Institute of Acoustics, Vol 10, Part 7, 1988, pp 95-102.

1987

16    J A S Angus and M Whitaker, "Low-Cost Speech Recogniser", Microprocessors and Microsystems, Vol 11, No 2, March 1987, pp 94-98.

15    J A S Angus and M T Whitaker, "Parameter Extraction using the Winograd Fourier Transform", European Conference on Speech Technology, September 1987, Vol 1     pp 144-147.

14    J A S Angus and M T Whitaker, "An Algorithm for Increasing Speed in Dynamic Time Warping", European Conference on Speech Technology, September 1987, Vol 2,       pp 284-287.

13    J A S Angus, "Howl-Round Detection and Control using Adaptive Filtering Techniques", Proceedings of the Institute of Acoustics, Vol 9, Part 6, 1987, pp 63-68.

12    J A S Angus and M T Whitaker, "Audio Spectral Analysis using the Winograd Fourier Transform", Proceedings of the Institute of Acoustics, Vol 9, Part 6, 1987, pp 63-68.

1986

11    J A S Angus and M T Whitaker, "A Low Cost Continuous Word Speech Recogniser", International Conference on Speech Input/Output;  Techniques and Applications, 24-26 March 1986, IEE Conference Publication 258, pp 119-123.

10    J A S Angus, "Low to Medium Bit-Rate Speech Coders for Secure Communications: A Survey", Second International Conference on Secure Systems, 27-28 October 1986, IEE Conference Publication 257, pp 82-87.

9      J A S Angus, "A Novel High Quality FM Stereo Demodulator using Hybrid Digital/Analogue Techniques", Proceedings of the Institute of Acoustics, Vol 8, Part 6, 1986, pp 107-114.

1985

8      J A S Angus, "Quantisation Effects in High Quality Digital Filtering", Proceedings of the Institute of Acoustics, Vol 7, part 3, 1985, pp 113-120.

7      J A S Angus, "Speech Spectrogram and other Grey Scale Output using Bi-Level Display Devices", Institute of Acoustics Speech Group Conference on Instrumentation and Coarticulation, 16-17 December 1985.

1984

6      J A S Angus, "The Design and Implementation of a General Purpose Signal Processor", University of York - Department of Electronics Research Report, no YEE.1/84, 1984.

1982

5      J A S Angus and L S Moye, " Speech coding at 32k bit/s for use in the Switched Telephone Network: Additional Results", STL Internal Technical Report, 1982.

4      J A S Angus and L S Moye, "Speech coding at 32k bit/s for use in the Switched Telephone Network", Proceedings of the Institute of Acoustics, Autumn Conference 8­9 November 1982 pp E7.8.

1981

3      J A S Angus, "The Electrooptic Coefficient in GaAs and it's Application to Integrated Optics", STL Internal Technical Report, 1981.

2      J A S Angus, "A Polishing Process for Endfire Coupling into LiNbO3 Waveguides", STL Internal Technical Report, 1981.

1980

1              J A S Angus, "Endfire Coupling into and out of LiNbO3 Waveguides", STL Internal Technical Report, 1980.