Transmitting and receiving system compatible with data of both t

Details Transmitting and receiving system compatible with data of both t Transmitting and receiving system compatible with data of both t

1997-07-29

2000-03-14

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704210, G10L 900

Patent

active

060385294

ABSTRACT:
A signal communication apparatus and method enables direct communication between communication systems of the silence compression and the non-silence compression type. The transmission and reception can each discriminate whether an audio signal is in a sound-present period or in a sound-absent period and this discrimination is output as period identification data. The audio signal is encoded, and the encoded data is selected and transmitted when the period identification data represents a sound-present period. Blank data prepared in advance are selected when the period identification data represents a sound-absent period. Encoded audio signal data of a variable bit rate are received, and the encoded data is selected, decoded, and output at a fixed bit rate when the period identification data represents a sound-present period. Data prepared in advance are outputted when the period identification data represents a sound-absent period. Multiplexing of period identification data can be used in a transmitter or receiver.

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