Method and apparatus for transmitting coded audio signals through a transmission channel with limited bandwidth
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United States of America Patent
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-
Mar 2, 2004
Grant Date -
Nov 8, 2001
app pub date -
Jul 3, 2001
filing date -
Apr 10, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital audio transmitter system capable of transmitting high quality, wideband speech over a transmission channel with a limited bandwidth such as a traditional telephone line. The digital audio transmitter system includes a coder for coding an input audio signal to a digital signal having a transmission rate that does not exceed the maximum allowable transmission rate for traditional telephone lines and a decoder for decoding the digital signal to provide an output audio signal with an audio bandwidth of wideband speech. A coder and a decoder may be provided in a single device to allow two-way communication between multiple devices.
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