Speech coding transmission equipment

Details Speech coding transmission equipment Speech coding transmission equipment

H - Electricity

04

B

179/2

H04B 1/66 (2006.01) G10L 19/14 (2006.01) G10L 21/04 (2006.01)

Patent

CA 1301072

SPEECH CODING TRANSMISSION EQUIPMENT ABSTRACT OF THE DISCLOSURE A speech coding transmission equipment dis- tinguishing whether a speech signal is in a voiced speech or an unvoiced speech period, and when the speech signal is in a voiced speech period, compressing and expanding, in the time domain, the speech signal using a pitch period of the speech signal, and when the speech signal is in an unvoiced speech period, compressing and expanding, in the time domain, the speech signal using a sample period in the equipment, thus carrying out an appropriate time domain harmonic compression and expansion of the speech signal and increasing the clarity of the reproduced speech as a whole.

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