1
Christopher Michael Jubien, Constantine Lakoumentas, Brian John Roden, Dale John Shpak, Jeffrey William Sondermeyer: Method and apparatus for automatic volume control in an audio system. Mackie Designs, Christensen O Connor Johnson Kindness PLLC, March 15, 2005: US06868162 (38 worldwide citation)

An audio system (100) is provided with improved adaptive filter (206) to automatically adjust signal gain depending on the ambient noise level. The original music signal passes through a normalized adaptive filter (206), and is subtracted from the ambient room signal detected by a microphone (120), ...


2
Brian Charles Gibson, Christopher Michael Jubien, Brian John Roden: Method and apparatus for changing the timbre and/or pitch of audio signals. IVL Technologies, Wilson Sonsini Goodrich & Rosati, April 4, 2000: US06046395 (13 worldwide citation)

A method for shifting the timbre and/or pitch of an input signal samples the input signal at a first rate and stores the samples in a memory buffer. A digital signal processor resamples the stored input signal at a rate that differs from the first rate at which the input note is originally sampled a ...


3
Brian Charles Gibson, Christopher Michael Jubien, Brian John Roden: Method and apparatus for changing the timbre and/or pitch of audio signals. IVL Technologies, Wilson Sonsini Goodrich & Rosati, November 16, 1999: US05986198 (9 worldwide citation)

A method for shifting the timbre and/or pitch of an input signal samples the input signal at a first rate and stores the samples in a memory buffer. A digital signal processor resamples the stored input signal at a rate that differs from the first rate at which the input note is originally sampled a ...


4
Brian Charles Gibson, Christopher Michael Jubien, Brian John Roden: Method and appts. for changing the timber and/or pitch of audio signals. Ivl Tech, ZHANG TIANSHU, March 19, 1997: CN96190038

A method for shifting the timbre and/or pitch of an input signal, samples the input signal at a first rate and stores the samples in a memory buffer 122. A digital signal processor 180 resamples the stored input signal at a rate that differs from the first rate at which the input note is originally ...