Deepak R Somasundaram

US Patent:

20080107277, May 8, 2008

Filed:

Oct 12, 2006

Appl. No.:

11/546425

Inventors:

Deepak Somasundaram - Petaluma CA, US
Tom Flaherty - Petaluma CA, US

Assignee:

PHONIC EAR INC. - Petaluma CA

International Classification:

H04R 5/00

US Classification:

381 28

Abstract:

This invention relates to a wireless classroom sound amplification system. The system comprises a microphone device converting a voice to a sound signal and connecting to a sound processing device processing the sound signal and generating a processed sound signal, and a speaker device connecting to the sound processing device and converting the processed sound signal to a processed voice. The sound processing device further comprises a feedback cancellation unit identifying acoustical feedback in the sound signal and removing the acoustical feedback in the sound signal.

US Patent:

20080170712, Jul 17, 2008

Filed:

Jan 16, 2007

Appl. No.:

11/653281

Inventors:

Deepak Somasundaram - Petaluma CA, US
Tom Flaherty - Petaluma CA, US

Assignee:

PHONIC EAR INC. - Petaluma CA

International Classification:

H04B 3/00

US Classification:

381 77

Abstract:

A classroom sound amplification system adapted for providing information aiding at diagnosing possible erroneous or inappropriate conditions or configurations of the system is disclosed. The system comprises a microphone device converting a voice to a sound signal and connecting to a sound processing device processing the sound signal and generating a processed sound signal, and a speaker device connecting to the sound processing device and converting the processed sound signal to a processed voice. The sound processing device may further comprise a feedback cancellation unit identifying acoustical feedback in the sound signal and removing the acoustical feedback in the sound signal. Communication with the parts of the system carried by a moving person may be wireless.

US Patent:

20080085013, Apr 10, 2008

Filed:

Oct 10, 2006

Appl. No.:

11/544919

Inventors:

Deepak Somasundaram - Petaluma CA, US

Assignee:

PHONIC EAR INC. - Petaluma CA

International Classification:

H04R 3/00
H03G 5/00
H03G 9/00

US Classification:

381 95, 381 98, 381102

Abstract:

This invention relates to a sound system and method for processing acoustical sound. The sound system comprises a microphone for converting an acoustical sound to an electrical sound signal, a processor for processing the sound signal and for generating a processed sound signal, and a speaker for converting the processed sound signal to a processed acoustical sound. The processor comprises a calculating unit for calculating a threshold value based on mean magnitude and standard deviation of the sound signal, a FFT unit for transforming the sound signal into frequency domain, a peak identification unit for identifying a peak in the sound signal in frequency domain and for generating a peak signal, a comparator for comparing the threshold value with the peak signal and for generating a control signal identifying frequency of said peak, and a programmable notch-filter unit receiving said control signal and filtering out a bandwidth of the sound signal in accordance with the control signal thereby generating the processed sound signal.