Owner Sonic Focus, Inc.

Inventors Barber, James; Paddock, Thomas

Agent Fisher Adams Kelly

Pub. Number AU-B-2003251403

PCT Number PCT/US03/17788

PCT Pub. Number WO2003/104924

Priority 60/386,541 05.06.02 US; 60/472,180 20.05.03 US

Filing date 5 June 2003

Wipo publication date 22 December 2003

Acceptance publication date 12 February 2009

H04R 3/00 (2006.01) Circuits for transducers

G06F 19/00 (2006.01) Digital computing or data processing equipment or methods, specially adapted for specific applications

G10K 15/00 (2006.01) Acoustics not otherwise provided for

G10K 15/02 (2006.01) Acoustics not otherwise provided for - Synthesis of acoustic waves

G10K 15/12 (2006.01) Acoustics not otherwise provided for

G10L 19/00 (2006.01) Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders

H03G 3/00 (2006.01) Gain control in amplifiers or frequency changers

H03G 7/00 (2006.01) Volume compression or expansion in amplifiers

H03G 9/00 (2006.01) Combinations of two or more types of control, e.g. gain control and tone control

H04R 3/04 (2006.01) Circuits for transducers - for correcting frequency response

H04R 5/04 (2006.01) Stereophonic arrangements

H04R 29/00 (2006.01) Monitoring arrangements

H04S 1/00 (2006.01) Two-channel systems

H04S 5/02 (2006.01) Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation

H04S 7/00 (2006.01) Indicating arrangements