Human speech envelope tracker

Details Human speech envelope tracker Human speech envelope tracker

1978-12-22

1980-09-16

Morrison, Malcolm A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324103P, 307352, G10L 100

Patent

active

042231809

ABSTRACT:
This invention recovers the time waveform envelope of a human voice signal ithout the loss of subtleties providing speaker recognition cues and voice quality.
This is accomplished by rectifying the voice envelope and then obtaining slope information about the original time waveform to detect peaks which are successively held by sample and hold circuitry.

REFERENCES:
patent: 3381091 (1968-04-01), Sondhi
patent: 3600688 (1971-08-01), Booth
patent: 3897774 (1975-08-01), Burdick et al.
patent: 4086651 (1978-04-01), Muir et al.

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