Voice activity detection method and apparatus using the same

Details Voice activity detection method and apparatus using the same Voice activity detection method and apparatus using the same

1996-02-08

1997-04-08

Brown, Thomas W.

Telephonic communications

Supervisory or control line signaling

Signal receiver

379351, 379282, 379283, 379 80, H04M 100

Patent

active

056195656

ABSTRACT:
A method for detecting the presence of voice, single tone and dual tone signals compares a ratio r which equals the square of the maximum value of the received signal (A max) during a sampling period divided by a measure E of the energy to three different thresholds. If r is less than the first threshold (3), a single tone is indicated. If it is greater than the first but less than the second, the received signal level is compared to the third threshold (-43 dB) and receipt of a voice signal is indicted if the level of the received signal exceeds this threshold.

REFERENCES:
patent: 4979214 (1990-12-01), Hamilton
Globecom, vol. 3, Nov. 28, 1988 pp. 1419-1427, "A DSP Implemented Speech/Voiceband Data Discriminator" paragraph 3.1 by Casale et al.

Affiliated with

Also associated with

Rating

Voice activity detection method and apparatus using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voice activity detection method and apparatus using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voice activity detection method and apparatus using the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2402017