[cisco-voip] pcm capture tools

[John Franklin]

Most audio tools can read a raw PCM file, since it doesn't have a header you just need to specify the format (eg. 8bit/16bit, Mono, 8000 samples)

I'm not sure about Audacity but I can say that we use Adobe Audition ($$$) and the NCH Wavepad (Free/cheap) to do just this, once loaded you can play, edit and save to another format.

Regards,

John Franklin
VoIPIntegration | www.VoIPintegration.com<http://www.voipintegration.com/>
201K Sand Creek Road
Brentwood, CA, USA. 94513

Tel: +1-925-513-4400
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From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Erick Wellnitz
Sent: Wednesday, August 21, 2013 12:40 PM
To: Wes Sisk (wsisk)
Cc: cisco-voip
Subject: Re: [cisco-voip] pcm capture tools

Another thing that pops into my mind is:

Will other audio tools, such as Audacity, work for this?

On Wed, Aug 21, 2013 at 12:29 PM, Wes Sisk (wsisk) <wsisk at cisco.com<mailto:wsisk at cisco.com>> wrote:
Great find. A few clarifying points that were not clear to me:

* The feature is called "PCM Tracer" - note it is different from the original PCM capture.
* It is only on specific platforms - ISR-G2 and VG350.

Regards,
Wes

On Aug 20, 2013, at 10:13 AM, Erick Wellnitz <ewellnitzvoip at gmail.com<mailto:ewellnitzvoip at gmail.com>> wrote:

Interesting.  I'll have to try this next time before I get TAC involved on a possible audio issue on one of our analog ports.

On Mon, Aug 19, 2013 at 11:05 PM, Justin Steinberg <jsteinberg at gmail.com<mailto:jsteinberg at gmail.com>> wrote:
I saw the link below was included in the monthly Cisco Services Newletter that came out last week.   I haven't personally tried the commands or know whether it is equivalent to a PCM capture.

http://www.cisco.com/en/US/products/ps6884/products_configuration_example09186a0080bf4912.shtml


On Mon, Aug 19, 2013 at 11:27 PM, Nick Matthews <matthnick at gmail.com<mailto:matthnick at gmail.com>> wrote:
Negatory. There was discussion at some point but it's a legal minefield - warrantless tapping, liability, every privacy regulation, etc.
>From a technical perspective the decoder changes fairly often and it's not trivial to keep up with the changes as well as identify the DSP version it was captured on for accurate decoding. Though those are much easier to fix than the legal ones.

-nick

On Mon, Aug 19, 2013 at 4:53 PM, Erick Wellnitz <ewellnitzvoip at gmail.com<mailto:ewellnitzvoip at gmail.com>> wrote:
Is there a publicly available tool to work with the pcm.dat file from a PCM capture?

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