Content Dependent Bandwidth Enhancement

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$114,698.00
Award Year:
2010
Program:
SBIR
Phase:
Phase I
Contract:
W15P7T-10-C-C405
Agency Tracking Number:
A092-067-0845
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
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
075132543
Principal Investigator:
Dan Law
Director of R&D
(703) 813-2160
dlaw@invertix.com
Business Contact:
Bryan Judd
EVP and CFO
(703) 813-2131
york@craft-tech.com
Research Institution:
n/a
Abstract
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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