Presentation 2006-12-14
DTMF Detection in VoIP using FFT
Hiroaki HATA, Yoshio ITOH,
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Abstract(in English) DTMF detector is the most important component of Voice Application Sever. This is implemented by using digital filter bank as a conventional hardware product. In VoIP the AS is implemented on a general purpose operating system such like PC-UNIX or WIN32. In these cases we show the advantage of Fast Fourie Transform (FFT) rather than filter bank for detection of DTMF. In addition to detection of frequency packet by packet.
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Keyword(in English) DTMF / FFT / VoIP / SIP
Paper # NS2006-138
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Committee NS
Conference Date 2006/12/7(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) DTMF Detection in VoIP using FFT
Sub Title (in English)
Keyword(1) DTMF
Keyword(2) FFT
Keyword(3) VoIP
Keyword(4) SIP
1st Author's Name Hiroaki HATA
1st Author's Affiliation NTTPC Communications, Inc.()
2nd Author's Name Yoshio ITOH
2nd Author's Affiliation Faculty of Engineering, Tottori University
Date 2006-12-14
Paper # NS2006-138
Volume (vol) vol.106
Number (no) 418
Page pp.pp.-
#Pages 4
Date of Issue