Subject: Re: VAD (Voice Activity Detection) algorithms? From: "Richard H." <auditory(at)AUGMENTICS.COM> Date: Fri, 30 Apr 2004 19:26:26 +0100This is a multi-part message in MIME format. ------=_NextPart_000_0456_01C42EE9.077CE5E0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: quoted-printable Good idea! I'd forgotten about all the goodies - including source code - in the GSM = etc standards. Thanks, Richard ----- Original Message -----=20 From: chen zhixin=20 To: AUDITORY(at)LISTS.MCGILL.CA=20 Sent: Friday, April 30, 2004 6:55 PM Subject: Re: VAD (Voice Activity Detection) algorithms? Hi, Richard Both ITU G.723.1 and G.729 provide VAD algorithm/c code. They perform = well in modest SNR environment. Best Regards, Chen "Richard H." <auditory(at)AUGMENTICS.COM> wrote: Hi, Does anyone have any idea where I can find some simple = algorithms/code to allow the presence or absence of speech in a signal = to be detected? Thanks, Richard -------------------------------------------------------------------------= ----- Do You Yahoo!? = ?Y??TT=A8=AE??=A1=A4??=A1=EA?=A8=AA?=A8=AE??=A1=A4=A1=EA??D=A1=E4=A8=AE?=A1= =C0=A1=EA? ------=_NextPart_000_0456_01C42EE9.077CE5E0 Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Dwindows-1252"> <META content=3D"MSHTML 6.00.2800.1400" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>G</FONT><FONT face=3DArial size=3D2>ood = idea!</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>I'd forgotten about all the goodies - = including=20 source code - in the GSM etc standards.</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Thanks,</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Richard</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <BLOCKQUOTE=20 style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV> <DIV=20 style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B>=20 <A title=3Dchenzhixin(at)YAHOO.COM = href=3D"mailto:chenzhixin(at)YAHOO.COM">chen=20 zhixin</A> </DIV> <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A = title=3DAUDITORY(at)LISTS.MCGILL.CA=20 href=3D"mailto:AUDITORY(at)LISTS.MCGILL.CA">AUDITORY(at)LISTS.MCGILL.CA</A> = </DIV> <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, April 30, 2004 = 6:55=20 PM</DIV> <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: VAD (Voice = Activity=20 Detection) algorithms?</DIV> <DIV><BR></DIV> <DIV>Hi, Richard</DIV> <DIV> </DIV> <DIV>Both ITU G.723.1 and G.729 provide VAD algorithm/c code. They = perform=20 well in modest SNR environment.</DIV> <DIV> </DIV> <DIV>Best Regards,</DIV> <DIV>Chen<BR><BR><B><I>"Richard H." <<A=20 = href=3D"mailto:auditory(at)AUGMENTICS.COM">auditory(at)AUGMENTICS.COM</A>></= I></B>=20 wrote:</DIV> <BLOCKQUOTE class=3Dreplbq=20 style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px = solid">Hi,<BR><BR>Does=20 anyone have any idea where I can find some simple algorithms/code to = allow=20 the presence or absence of speech in a signal to=20 be<BR>detected?<BR><BR>Thanks,<BR><BR>Richard</BLOCKQUOTE> <P><BR> <HR SIZE=3D1> <B>Do You Yahoo!?</B><BR><A=20 = href=3D"http://cn.rd.yahoo.com/mail_cn/tag/SIG=3D1402c0to2/**http%3A%2F%2= Fhp.allyes.com%2Flaserjet%2Fgamestory%2Findex.html%3Fjumpid%3Dex_hphqapcn= _MongooseLJ1010%2F201073CN407016%2FYahoo"=20 = target=3Dblank>=BB=DD=C6=D5TT=D3=CE=CF=B7=BE=E7=A3=AC=CD=E6=D3=CE=CF=B7=A3= =AC=D6=D0=B4=F3=BD=B1=A3=A1</A></BLOCKQUOTE></BODY></HTML> ------=_NextPart_000_0456_01C42EE9.077CE5E0--