Tech report on speech segregation (DeLiang Wang )

Subject: Tech report on speech segregation
From:    DeLiang Wang  <dwang(at)CIS.OHIO-STATE.EDU>
Date:    Wed, 8 Jul 1998 17:28:20 -0400

The following technical report is available via FTP/WWW: ------------------------------------------------------------------ "Separation of Speech from Interfering Sounds Based on Oscillatory Correlation" Technical Report #24, June 1998 The Ohio State University Center for Cognitive Science ------------------------------------------------------------------ DeLiang L. Wang, The Ohio State University Guy J. Brown, University of Sheffield A multi-stage neural model is proposed for an auditory scene analysis task - segregating speech from interfering sound sources. The core of the model is a two-layer oscillator network that performs stream segregation on the basis of oscillatory correlation. In the oscillatory correlation framework, a stream is represented by a population of synchronized relaxation oscillators, each of which corresponds to an auditory feature, and different streams are represented by desynchronized oscillator populations. Lateral connections between oscillators encode harmonicity, and proximity in frequency and time. Prior to the oscillator network are a model of the auditory periphery and a stage in which mid-level auditory representations are formed. The model has been systematically evaluated using a corpus of voiced speech mixed with interfering sounds, and produces improvements in terms of signal-to-noise ratio for every mixture. Furthermore, the pattern of improvements seems consistent with human performance. The performance of our model is compared with other studies on computational auditory scene analysis. A number of issues including biological plausibility and real-time implementation are also discussed. (28 pages, 384 KB compressed) for anonymous ftp: FTP-HOST: Directory: /pub/leon/Brown Filename: for WWW: (Some pages may not show up in postscript display, but should print OK) Send comments to DeLiang Wang (dwang(at) Email to AUDITORY should now be sent to AUDITORY(at) LISTSERV commands should be sent to listserv(at) Information is available on the WEB at

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