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A Novel and High Performance System for Enhancing Speech in Helmet

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
90602
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
084385
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
SIGNAL PROCESSING, INC.
9700 Great Seneca Highway Rockville, MD -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2009
Title: A Novel and High Performance System for Enhancing Speech in Helmet
Agency: NASA
Contract: NNX09CD03P
Award Amount: $99,999.00
 

Abstract:

We propose a highly innovative system for enhancing speech in helmet. First, we propose to apply a circular array with 8 microphones that are inside the helmet. In our past studies, it was found that circular arrays have better directivity than linear arrays. The use of 8 microphones achieves a compromise between performance and complexity. Second, since the speech source and mics are close, we apply proven near-field beamforming to speech acquisition. This will ensure better speech acquisition and high signal-to-noise ratio. Third, we propose to apply latest developments in speech separation to untangle the speech from other background noises. The particular technique is known as Adaptive Decorrelation Filter (ADF) and has been proven to outperform conventional techniques such as Independent Component Analysis (ICA). ADF has strong potential in separating breathing noise from normal speech. Then only the speech segments will be transmitted. The proposed algorithms will be implemented in Field Programmable Gate Array (FPGA) in Phase 2.

Principal Investigator:

Chiman Kwan
Principal Investigator
2405052641
chiman.kwan@signalpro.net

Business Contact:

Chiman Kwan
Business Official
2405052641
chiman.kwan@signalpro.net
Small Business Information at Submission:

Signal Processing, Inc.
13619 Valley Oak Circle Rockville, MD 20850

EIN/Tax ID: 134320631
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No