Pause compressing speech coding/decoding apparatus

Details Pause compressing speech coding/decoding apparatus Pause compressing speech coding/decoding apparatus

1996-05-23

1997-11-11

Macdonald, Allen R.

395 235, 395 242, 395 21, G10L 900

Patent

active

056872836

ABSTRACT:
A pause compressing speech coding/decoding apparatus according to the invention can improve the sound quality of decoded speech in terms of sense of hearing, in which the transmission side includes a speech coder, a speech detector, a hangover time controller for adjusting the duration of a speech interval, and a switch for outputting only coded data in a speech interval to a line, and the reception side includes a speech decoder, a noise generator, an amplifier for controlling the output level of the noise generator, a selector for selecting/outputting one of outputs from the speech decoder and the noise generator, a speech/pause data detector for detecting speech/pause data of data from the line, a gain controller for calculating the gain of the amplifier, a level calculator for calculating the signal level of reproduced speech from the speech decoder, and a memory for storing past level values calculated by the level calculator.

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