Speech/audio coding technologies and their applications

Research output: Contribution to journalArticle

Abstract

Multimedia signal processing by software or firmware can be executed in realtime on the latest high-performance CPU or DSP. Moreover, storage, processing, and communication of speech and audio data will be handled easily using personal computers connected to networks, such as the Internet. This paper describes NTT's speech coding software `DualSpeech' and audio coding technology `TwinVQ' for multimedia services, and their application systems. They feature a low bit-rate, low arithmetic complexity, and high quality of speech/audio. With conventional technologies, these three advantages were incompatible, but `DualSpeech' demonstrates high performance in Internet speech casting, voice mail, Internet tele-conferencing, and network reading systems. `TwinVQ' also demonstrates high performance in network broadcasting systems and network audio players.

Original languageEnglish
Pages (from-to)158-164
Number of pages7
JournalNTT R and D
Volume49
Issue number3
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Internet
Multimedia signal processing
Speech coding
Firmware
Multimedia services
Broadcasting
Personal computers
Program processors
Casting
Communication
Processing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Speech/audio coding technologies and their applications. / Kaneko, Takao.

In: NTT R and D, Vol. 49, No. 3, 2000, p. 158-164.

Research output: Contribution to journalArticle

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