System implementation of I-phone hardware by using low bit rate speech coding

Ruei Xi Chen; Mei Juan Chen; Liang Gee Chen; Tsung Han Tsai

System implementation of I-phone hardware by using low bit rate speech coding

Ruei Xi Chen, Mei Juan Chen, Liang Gee Chen, Tsung Han Tsai

電機工程學系

研究成果: 會議貢獻類型 › 會議論文 › 同行評審

摘要

This paper presents a system implementation for Internet-phone communication with real-time speech coding schemes. A low-cost speech processing coprocessor is embedded. A CPLD device is used to implement the interface between the host processor and the coprocessor via conventional parallel port. At the headphone interface, there are a 16-bits PCM CODEC and an audio amplifier with acoustic echo cancellation features employed. The system consists of a mixed implementation of software and hardware. The experimental coding rate is 8.5 kbps. In such rate, a 14.4 kbps or higher speed modem can conform to offer full-duplex speech for the applications such as digital simultaneous voice data (DSVD).

原文	???core.languages.en_GB???
頁面	489-499
頁數	11
出版狀態	已出版 - 1997
事件	Proceedings of the 1997 IEEE Workshop on Signal Processing Systems, SiPS 97: Design and Implementation - Leicester, UK 持續時間: 3 11月 1997 → 5 11月 1997

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???event.eventtypes.event.conference???	Proceedings of the 1997 IEEE Workshop on Signal Processing Systems, SiPS 97: Design and Implementation
城市	Leicester, UK
期間	3/11/97 → 5/11/97

引用此

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AU - Chen, Liang Gee

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AB - This paper presents a system implementation for Internet-phone communication with real-time speech coding schemes. A low-cost speech processing coprocessor is embedded. A CPLD device is used to implement the interface between the host processor and the coprocessor via conventional parallel port. At the headphone interface, there are a 16-bits PCM CODEC and an audio amplifier with acoustic echo cancellation features employed. The system consists of a mixed implementation of software and hardware. The experimental coding rate is 8.5 kbps. In such rate, a 14.4 kbps or higher speed modem can conform to offer full-duplex speech for the applications such as digital simultaneous voice data (DSVD).

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System implementation of I-phone hardware by using low bit rate speech coding

摘要

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