Abstract
This paper addresses the problem of automatic recognition of three simultaneous speeches with two microphones, that is, that of sound source separation where the number of sound sources is greater than that of microphones. The approach used is the direction-pass filter, which is implemented by hypothetical reasoning on the interaural phase difference (IPD) and interaural intensity difference (IID). Auditory processing calculates IPD and IID for each subband, and generates hypotheses for precalculated IPD and IID for every direction including one obtained by visual processing. Then the system calculates the belief factor of hypothesis by Dempster-Shafer theory and determines the direction of each subband. Subbands of the specific direction are collected and then converted to a wave form by inverse FFT. With 200 benchmarks of three simultaneous utterances of Japanese words, the average 1-best and 10-best recognition rates of extracted speeches are 60% and 81%, respectively.
Original language | English |
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Title of host publication | EUROSPEECH 2001 - SCANDINAVIA - 7th European Conference on Speech Communication and Technology |
Publisher | International Speech Communication Association |
Pages | 2643-2646 |
Number of pages | 4 |
ISBN (Electronic) | 8790834100, 9788790834104 |
Publication status | Published - 2001 |
Externally published | Yes |
Event | 7th European Conference on Speech Communication and Technology - Scandinavia, EUROSPEECH 2001 - Aalborg, Denmark Duration: 2001 Sep 3 → 2001 Sep 7 |
Other
Other | 7th European Conference on Speech Communication and Technology - Scandinavia, EUROSPEECH 2001 |
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Country/Territory | Denmark |
City | Aalborg |
Period | 01/9/3 → 01/9/7 |
ASJC Scopus subject areas
- Communication
- Linguistics and Language
- Computer Science Applications
- Software