A speech intelligibility test conforming to the Modified Rhyme Test of ANSI S3.2 “Method for Measuring the Intelligibility of Speech Over Communication Systems” was conducted using a prototype 12-channel acoustic beamformer system. The target speech material (signal) was identified against speech babble (noise), with calculated signal-noise ratios of 0, 5 and 10 dB. The signal was delivered at a fixed beam orientation of 135 degrees (re 90 degrees as the frontal direction of the array) and the noise at 135 (co-located) and 0 degrees (separated). A significant improvement in intelligibility from 58% to 75% was found for spatial separation for the same signal-noise ratio (0 dB). Significant effects for improved intelligibility due to spatial separation were also found for higher signal-noise ratios.
Authors:
Begault, Durand; Sunder, Kaushik; Godfroy, Martine; Otto, Peter
Affiliations:
NASA Ames Research Center, Moffet Field, CA, USA; San Jose State University Foundation, San Jose, CA, USA; Calit2 (California Institute for Telecommunications and Technology), UC San Diego, La Jolla, CA, USA(See document for exact affiliation information.)
AES Convention:
139 (October 2015)
eBrief:211
Publication Date:
October 23, 2015
Subject:
Transducers
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.