Patent
1992-10-05
1996-11-26
MacDonald, Allen R.
395 224, 395 257, 395 262, G10L 900
Patent
active
055794319
ABSTRACT:
The device detects the beginning and ending portions of speech contained within an input signal based on the variance of frequency band limited energy within the signal. The use of the variance allows detection which is relatively independent of an absolute signal-to-noise ratio with the signal, and allows accurate detection within a wide variety of backgrounds such as music, motor noise, and background noise, such as other speakers. The device can be easily implemented using off-the-shelf hardware along with a high-speed special purpose digital signal processor integrated circuit.
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"A Robust Speech/Non-Speech Detection Algorithm Using Time and Frequency-Based Features," by Frank Mak et al., 1992 IEEE International Conference on Acoustics, Speech and Signal Processing, Mar. 23-26, 1992, v. 1, pp. 269-272.
MacDonald Allen R.
Matsushita Electric - Industrial Co., Ltd.
Panasonic Technologies Inc.
Sartori Michael A.
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