Content Dependent Bandwidth Enhancement

Award Information
Agency: Department of Defense
Branch: Army
Contract: W15P7T-10-C-C405
Agency Tracking Number: A092-067-0845
Amount: $114,698.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2009
Solicitation Topic Code: A09-067
Solicitation Number: 2009.2
Small Business Information
Invertix Corporation
8201 Greensboro Drive, Suite 800, McLean, VA, 22102
DUNS: 075132543
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dan Law
 Director of R&D
 (703) 813-2160
Business Contact
 Bryan Judd
Title: EVP and CFO
Phone: (703) 813-2131
Research Institution
We propose an analog transmission of a speech cepstrum for the dual purposes of bandwidth reduction and improvements in speech quality under extremely challenging channel environments. By utilizing the speech cepstrum, we exploit a well-studied and widely-used sparse representation of speech. The novelty in the method is that we propose to “spread” the waveform defined by the first few cepstral coefficients over the speech frame length, i.e. time-domain spreading. This spread cepstrum approach reduces the bandwidth and may offer robustness to noise for low-power applications.

* information listed above is at the time of submission.

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