Anyone know of a good journal paper that describes these DTD
techniques?
Fred
--- In echocancel@y..., "Atanu Guchhait" <atanug@c...> wrote: > hi,
> NCC/FNCC stands for Normalized Cross-Correlation DTD/ Fast Normalized > Cross-Correlation DTD.
> regards
> atanu
> *************************************
> Center For Development Of Telematics
> Telecom Technology Center Of Govt. Of India
> Sneha Complex. Third Floor
> 71/1 Millers Road. Bangalore - 560052
> India.
> Ph: +91-80-2282915
> +91-80-2263399-245/235/312
> Fax: +91-80-2282915
>
> email: atanug@c...
> atanu_g@e...
> *************************************
> ----- Original Message -----
> From: <urinix@l...>
> To: <echocancel@y...>
> Sent: Monday, November 19, 2001 12:30 PM
> Subject: [echocancel] Re: Double Talk Detector
> > What does the NCC/FNCC stand for?
> >
> >
> > --- In echocancel@y..., "Atanu Guchhait" <atanug@c...>
wrote:
> > > hi,
> > > there are several methods for DTD like,
> > > 1)The Geigel DTD
> > > 2)The NCC DTD
> > > 3)The FNCC DTD
> > > 4)DTD based on Pseudo-Coherence Measure
> > > etc,
> > > Most of the AECs are using FNCC DTD and DTD based on PCM.Try these > > two.
> > > regards
> > > Atanu
> > > *************************************
> > > Center For Development Of Telematics
> > > Telecom Technology Center Of Govt. Of India
> > > Sneha Complex. Third Floor
> > > 71/1 Millers Road. Bangalore - 560052
> > > India.
> > > Ph: +91-80-2282915
> > > +91-80-2263399-245/235/312
> > > Fax: +91-80-2282915
> > >
> > > email: atanug@c...
> > > atanu_g@e...
> > > *************************************
> > > ----- Original Message -----
> > > From: <m_sikarwar@y...>
> > > To: <echocancel@y...>
> > > Sent: Friday, November 02, 2001 10:23 AM
> > > Subject: [echocancel] Double Talk Detector
> > >
> > >
> > > >
> > > > Hello friends,
> > > >
> > > > I am working on Acoustic echo cancelletion. I am facing
> > problems in
> > > > selecting DTD(Double Talk Detector). In Acoustic case
Giegels'
> > > > algorithm does not work, i have tried algorithms based on
far and > > > > near end energy estimation but
their results varies drastically > > from
> > > > signal to signal.
> > > > can someone tell me about abt cross correlation methods
or any > > > > other algorithm for DTD.
> > > >
> > > > Thanks in advance.
> > > >
> > > > Regards
> > > > Manish
> > > >
> > > >
> > > >
> > > >
> > > > _____________________________________
> > > > Note: If you do a simple "reply" with your email
client, only the > > author
> > > of this message will receive your answer. You need to do a "reply > > all" if
> > > you want your answer to be distributed to the entire group.
> > > >
> > > > _____________________________________
> > > > About this discussion group:
> > > >
> > > > To Join: echocancel-subscribe@y...
> > > >
> > > > To Post: echocancel@y...
> > > >
> > > > To Leave: echocancel-unsubscribe@y...
> > > >
> > > > Archives: http://www.yahoogroups.com/group/echocancel
> > > >
> > > > Other DSP-Related Groups: http://www.dsprelated.com
> > > >
> > > >
> > > > ">http://docs.yahoo.com/info/terms/
> > > >
> > > >
> > > >
> >
> >
> >
> >
> > _____________________________________
> > Note: If you do a simple "reply" with your email client,
only the author > of this message will receive your answer. You need
to do a "reply all" if > you want your answer to be distributed to the
entire group.
> >
> > _____________________________________
> > About this discussion group:
> >
> > To Join: echocancel-subscribe@y...
> >
> > To Post: echocancel@y...
> >
> > To Leave: echocancel-unsubscribe@y...
> >
> > Archives: http://www.yahoogroups.com/group/echocancel
> >
> > Other DSP-Related Groups: http://www.dsprelated.com
> >
> >
> > ">http://docs.yahoo.com/info/terms/ > >
> >
> >
Reply by narendra●November 23, 20012001-11-23
Hi,
What are the differences for a DTD for AEC and LEC
G.168?
What are the diff. algorithms for filtering for LEC?
What should be done for multichanneling?
thanks.
Narendra
----- Original Message -----
From: HK
To:
Sent: Friday, November 16, 2001 2:06 AM
Subject: Re: [echocancel] Double Talk Detector
Hi,
What are the differences for a DTD for AEC and LEC
G.168?
hk
--- Atanu Guchhait <> wrote: > hi,
> there are several methods for DTD like,
> 1)The Geigel DTD
> 2)The NCC DTD
> 3)The FNCC DTD
> 4)DTD based on Pseudo-Coherence Measure
> etc,
> Most of the AECs are using FNCC DTD and DTD based on
> PCM.Try these two.
> regards
> Atanu
> *************************************
> Center For Development Of Telematics
> Telecom Technology Center Of Govt. Of India
> Sneha Complex. Third Floor
> 71/1 Millers Road. Bangalore - 560052
> India.
> Ph: +91-80-2282915
> +91-80-2263399-245/235/312
> Fax: +91-80-2282915
>
> email:
>
> *************************************
> ----- Original Message -----
> From: <>
> To: <>
> Sent: Friday, November 02, 2001 10:23 AM
> Subject: [echocancel] Double Talk Detector
> >
> > Hello friends,
> >
> > I am working on Acoustic echo cancelletion. I am
> facing problems in
> > selecting DTD(Double Talk Detector). In Acoustic
> case Giegels'
> > algorithm does not work, i have tried algorithms
> based on far and
> > near end energy estimation but their results
> varies drastically from
> > signal to signal.
> > can someone tell me about abt cross correlation
> methods or any
> > other algorithm for DTD.
> >
> > Thanks in advance.
> >
> > Regards
> > Manish
> >
> >
> >
> >
> > _____________________________________
> > Note: If you do a simple "reply" with your email
> client, only the author
> of this message will receive your answer. You need
> to do a "reply all" if
> you want your answer to be distributed to the entire
> group.
> >
> > _____________________________________
> > About this discussion group:
> >
> > To Join:
> >
> > To Post:
> >
> > To Leave:
> >
> > Archives:
> http://www.yahoogroups.com/group/echocancel
> >
> > Other DSP-Related Groups:
> http://www.dsprelated.com
> >
> >
> > ">http://docs.yahoo.com/info/terms/
> >
> >
>
>
_____________________________________
Note: If you do a simple "reply" with your email client, only the
author of
this message will receive your answer. You need to do a "reply all" if
you want
your answer to be distributed to the entire group.
_____________________________________
About this discussion group:
Reply by Atanu Guchhait●November 20, 20012001-11-20
hi,
NCC/FNCC stands for Normalized Cross-Correlation DTD/ Fast Normalized
Cross-Correlation DTD.
regards
atanu
*************************************
Center For Development Of Telematics
Telecom Technology Center Of Govt. Of India
Sneha Complex. Third Floor
71/1 Millers Road. Bangalore - 560052
India.
Ph: +91-80-2282915
+91-80-2263399-245/235/312
Fax: +91-80-2282915
email:
*************************************
----- Original Message -----
From: <>
To: <>
Sent: Monday, November 19, 2001 12:30 PM
Subject: [echocancel] Re: Double Talk Detector
> What does the NCC/FNCC stand for?
> --- In echocancel@y..., "Atanu Guchhait" <atanug@c...>
wrote:
> > hi,
> > there are several methods for DTD like,
> > 1)The Geigel DTD
> > 2)The NCC DTD
> > 3)The FNCC DTD
> > 4)DTD based on Pseudo-Coherence Measure
> > etc,
> > Most of the AECs are using FNCC DTD and DTD based on PCM.Try these
> two.
> > regards
> > Atanu
> > *************************************
> > Center For Development Of Telematics
> > Telecom Technology Center Of Govt. Of India
> > Sneha Complex. Third Floor
> > 71/1 Millers Road. Bangalore - 560052
> > India.
> > Ph: +91-80-2282915
> > +91-80-2263399-245/235/312
> > Fax: +91-80-2282915
> >
> > email: atanug@c...
> > atanu_g@e...
> > *************************************
> > ----- Original Message -----
> > From: <m_sikarwar@y...>
> > To: <echocancel@y...>
> > Sent: Friday, November 02, 2001 10:23 AM
> > Subject: [echocancel] Double Talk Detector
> >
> >
> > >
> > > Hello friends,
> > >
> > > I am working on Acoustic echo cancelletion. I am facing
> problems in
> > > selecting DTD(Double Talk Detector). In Acoustic case
Giegels'
> > > algorithm does not work, i have tried algorithms based on far
and
> > > near end energy estimation but their results varies
drastically
> from
> > > signal to signal.
> > > can someone tell me about abt cross correlation methods or any
> > > other algorithm for DTD.
> > >
> > > Thanks in advance.
> > >
> > > Regards
> > > Manish
> > >
> > >
> > >
> > >
> > > _____________________________________
> > > Note: If you do a simple "reply" with your email
client, only the
> author
> > of this message will receive your answer. You need to do a
"reply
> all" if
> > you want your answer to be distributed to the entire group.
> > >
> > > _____________________________________
> > > About this discussion group:
> > >
> > > To Join: echocancel-subscribe@y...
> > >
> > > To Post: echocancel@y...
> > >
> > > To Leave: echocancel-unsubscribe@y...
> > >
> > > Archives: http://www.yahoogroups.com/group/echocancel
> > >
> > > Other DSP-Related Groups: http://www.dsprelated.com
> > >
> > >
> > > ">http://docs.yahoo.com/info/terms/
> > >
> > >
> >
>
>
> _____________________________________
> Note: If you do a simple "reply" with your email client, only the
author of this message will receive your answer. You need to do a "reply
all" if
you want your answer to be distributed to the entire group. >
> _____________________________________
> About this discussion group:
>
> To Join:
>
> To Post:
>
> To Leave:
>
> Archives: http://www.yahoogroups.com/group/echocancel
>
> Other DSP-Related Groups: http://www.dsprelated.com
> ">http://docs.yahoo.com/info/terms/
>
Reply by ●November 19, 20012001-11-19
What does the NCC/FNCC stand for?
--- In echocancel@y..., "Atanu Guchhait" <atanug@c...> wrote: > hi,
> there are several methods for DTD like,
> 1)The Geigel DTD
> 2)The NCC DTD
> 3)The FNCC DTD
> 4)DTD based on Pseudo-Coherence Measure
> etc,
> Most of the AECs are using FNCC DTD and DTD based on PCM.Try these two. > regards
> Atanu
> *************************************
> Center For Development Of Telematics
> Telecom Technology Center Of Govt. Of India
> Sneha Complex. Third Floor
> 71/1 Millers Road. Bangalore - 560052
> India.
> Ph: +91-80-2282915
> +91-80-2263399-245/235/312
> Fax: +91-80-2282915
>
> email: atanug@c...
> atanu_g@e...
> *************************************
> ----- Original Message -----
> From: <m_sikarwar@y...>
> To: <echocancel@y...>
> Sent: Friday, November 02, 2001 10:23 AM
> Subject: [echocancel] Double Talk Detector
> >
> > Hello friends,
> >
> > I am working on Acoustic echo cancelletion. I am facing problems in > > selecting DTD(Double Talk Detector). In
Acoustic case Giegels'
> > algorithm does not work, i have tried algorithms based on far and
> > near end energy estimation but their results varies drastically from > > signal to signal.
> > can someone tell me about abt cross correlation methods or any
> > other algorithm for DTD.
> >
> > Thanks in advance.
> >
> > Regards
> > Manish
> >
> >
> >
> >
> > _____________________________________
> > Note: If you do a simple "reply" with your email client,
only the author > of this message will receive your answer. You need
to do a "reply all" if > you want your answer to be distributed to the
entire group.
> >
> > _____________________________________
> > About this discussion group:
> >
> > To Join: echocancel-subscribe@y...
> >
> > To Post: echocancel@y...
> >
> > To Leave: echocancel-unsubscribe@y...
> >
> > Archives: http://www.yahoogroups.com/group/echocancel
> >
> > Other DSP-Related Groups: http://www.dsprelated.com
> >
> >
> > ">http://docs.yahoo.com/info/terms/ > >
> >
> >
Reply by HK●November 15, 20012001-11-15
Hi,
What are the differences for a DTD for AEC and LEC
G.168?
hk
--- Atanu Guchhait <> wrote: > hi,
> there are several methods for DTD like,
> 1)The Geigel DTD
> 2)The NCC DTD
> 3)The FNCC DTD
> 4)DTD based on Pseudo-Coherence Measure
> etc,
> Most of the AECs are using FNCC DTD and DTD based on
> PCM.Try these two.
> regards
> Atanu
> *************************************
> Center For Development Of Telematics
> Telecom Technology Center Of Govt. Of India
> Sneha Complex. Third Floor
> 71/1 Millers Road. Bangalore - 560052
> India.
> Ph: +91-80-2282915
> +91-80-2263399-245/235/312
> Fax: +91-80-2282915
>
> email:
>
> *************************************
> ----- Original Message -----
> From: <>
> To: <>
> Sent: Friday, November 02, 2001 10:23 AM
> Subject: [echocancel] Double Talk Detector
> >
> > Hello friends,
> >
> > I am working on Acoustic echo cancelletion. I am
> facing problems in
> > selecting DTD(Double Talk Detector). In Acoustic
> case Giegels'
> > algorithm does not work, i have tried algorithms
> based on far and
> > near end energy estimation but their results
> varies drastically from
> > signal to signal.
> > can someone tell me about abt cross correlation
> methods or any
> > other algorithm for DTD.
> >
> > Thanks in advance.
> >
> > Regards
> > Manish
> >
> >
> >
> >
> > _____________________________________
> > Note: If you do a simple "reply" with your email
> client, only the author
> of this message will receive your answer. You need
> to do a "reply all" if
> you want your answer to be distributed to the entire
> group.
> >
> > _____________________________________
> > About this discussion group:
> >
> > To Join:
> >
> > To Post:
> >
> > To Leave:
> >
> > Archives:
> http://www.yahoogroups.com/group/echocancel
> >
> > Other DSP-Related Groups:
> http://www.dsprelated.com
> >
> >
> > ">http://docs.yahoo.com/info/terms/
> >
> >
>
>
Reply by Atanu Guchhait●November 15, 20012001-11-15
hi,
there are several methods for DTD like,
1)The Geigel DTD
2)The NCC DTD
3)The FNCC DTD
4)DTD based on Pseudo-Coherence Measure
etc,
Most of the AECs are using FNCC DTD and DTD based on PCM.Try these two.
regards
Atanu
*************************************
Center For Development Of Telematics
Telecom Technology Center Of Govt. Of India
Sneha Complex. Third Floor
71/1 Millers Road. Bangalore - 560052
India.
Ph: +91-80-2282915
+91-80-2263399-245/235/312
Fax: +91-80-2282915
email:
*************************************
----- Original Message -----
From: <>
To: <>
Sent: Friday, November 02, 2001 10:23 AM
Subject: [echocancel] Double Talk Detector
>
> Hello friends,
>
> I am working on Acoustic echo cancelletion. I am facing problems in
> selecting DTD(Double Talk Detector). In Acoustic case Giegels'
> algorithm does not work, i have tried algorithms based on far and
> near end energy estimation but their results varies drastically from
> signal to signal.
> can someone tell me about abt cross correlation methods or any
> other algorithm for DTD.
>
> Thanks in advance.
>
> Regards
> Manish
>
>
> _____________________________________
> Note: If you do a simple "reply" with your email client, only the
author of this message will receive your answer. You need to do a "reply
all" if
you want your answer to be distributed to the entire group. >
> _____________________________________
> About this discussion group:
>
> To Join:
>
> To Post:
>
> To Leave:
>
> Archives: http://www.yahoogroups.com/group/echocancel
>
> Other DSP-Related Groups: http://www.dsprelated.com
> ">http://docs.yahoo.com/info/terms/
>
Reply by Bob Cain●November 2, 20012001-11-02
Sudarini, can you recommend a text or online paper that would serve as a
definition of the problem solved by echo cancellation? Not
necessasarily a comprehensive treatment of solutions but just something
that clarifies the playing field.
Thanks,
Bob
Sudarini Pushparajah wrote: >
> Hi Manish,
> Below are some links to correlation based and other DT
> detection methods. Hope they are useful
>
> Sudarini
> ------------
>
> A New Class of Doubletalk Detectors Based on Cross-Correlation
> www.bell-labs.com/user/jbenesty/papers/sap_mar2000.pdf
>
> An Objective Technique for Evaluating Doubletalk Detectors in Acoustic
Echo
> Cancelers.
> www.bell-labs.com/user/jbenesty/papers/sap_nov1999.pdf
>
> On the Problem of Detection and Discrimination of Double Talk and Change
in
> the Echo Path.
> http://citeseer.nj.nec.com/cache/papers2/cs/2091/ftp:zSzzSzftp.control.isy.liu.s\
ezSzpubzSzReportszSz1995zSz1790.pdf/carlemalm96problem.pdf >
> Acoustic Echo Canceller with two Echo Path Estimation Filters
> http://www-d.connect.ti.com/dsp/tpcat/tpcodec.nsf/SoftwareForExternal/B82D5EC3BB\
3149028625676100702688 >
> A Good website for acoutic echo cancellation and doubletalk detection
> papaers.
> http://www.tu-darmstadt.de/fb/et/signale/schmidt/literature/papers/echo_cancella\
tion/general/echo_cancellation_general.html >
> >From:
> >Reply-To:
> >To:
> >Subject: [echocancel] Double Talk Detector
> >Date: Fri, 02 Nov 2001 04:53:10 -0000
> >
> >
> >Hello friends,
> >
> > I am working on Acoustic echo cancelletion. I am facing problems in
> >selecting DTD(Double Talk Detector). In Acoustic case Giegels'
> >algorithm does not work, i have tried algorithms based on far and
> >near end energy estimation but their results varies drastically from
> >signal to signal.
> > can someone tell me about abt cross correlation methods or any
> >other algorithm for DTD.
> >
> >Thanks in advance.
> >
> >Regards
> >Manish
> >
> >
>
> _____________________________________
> Note: If you do a simple "reply" with your email client, only the
author of this message will receive your answer. You need to do a "reply
all" if you want
your answer to be distributed to the entire group. >
> _____________________________________
> About this discussion group:
>
> To Join:
>
> To Post:
>
> To Leave:
>
> Archives: http://www.yahoogroups.com/group/echocancel
>
> Other DSP-Related Groups: http://www.dsprelated.com
> ">http://docs.yahoo.com/info/terms/
--
"Things should be described as simply as possible, but no simpler."
A. Einstein
////////////////////////////////////////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
To contribute your unused processor cycles to the fight against cancer:
Reply by Sudarini Pushparajah●November 2, 20012001-11-02
Hi Manish,
Below are some links to correlation based and other DT
detection methods. Hope they are useful
Sudarini
------------
A New Class of Doubletalk Detectors Based on Cross-Correlation
www.bell-labs.com/user/jbenesty/papers/sap_mar2000.pdf
An Objective Technique for Evaluating Doubletalk Detectors in Acoustic Echo
Cancelers.
www.bell-labs.com/user/jbenesty/papers/sap_nov1999.pdf
On the Problem of Detection and Discrimination of Double Talk and Change in
the Echo Path. http://citeseer.nj.nec.com/cache/papers2/cs/2091/ftp:zSzzSzftp.control.isy.liu.s\
ezSzpubzSzReportszSz1995zSz1790.pdf/carlemalm96problem.pdf
>From:
>Reply-To:
>To:
>Subject: [echocancel] Double Talk Detector
>Date: Fri, 02 Nov 2001 04:53:10 -0000
>Hello friends,
>
> I am working on Acoustic echo cancelletion. I am facing problems in
>selecting DTD(Double Talk Detector). In Acoustic case Giegels'
>algorithm does not work, i have tried algorithms based on far and
>near end energy estimation but their results varies drastically from
>signal to signal.
> can someone tell me about abt cross correlation methods or any
>other algorithm for DTD.
>
>Thanks in advance.
>
>Regards
>Manish
Reply by ●November 2, 20012001-11-02
Hello friends,
I am working on Acoustic echo cancelletion. I am facing problems in
selecting DTD(Double Talk Detector). In Acoustic case Giegels'
algorithm does not work, i have tried algorithms based on far and
near end energy estimation but their results varies drastically from
signal to signal.
can someone tell me about abt cross correlation methods or any
other algorithm for DTD.