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<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Unfortunately reversing the audio prior to mixing did not help resolve all scenarios.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">After discussing with the dev that last looked at the issue the only scenario we were unable to resolve using padding (rather than reversing but reversing sounds potentially easier) was when the call is transferred
as some point.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The steps I’m essentially following are:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">{code}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">sox ./xyz-in.wav ./xyz-in.reversed.wav reverse<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">sox ./xyz-out.wav ./xyz-out.reversed.wav reverse<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">sox -m "|sox ./xyz-in.reversed.wav -p remix 1 0" "|sox ./xyz-out.reversed.wav -p remix 0 1" reversed_stereo.wav<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">sox ./reversed_stereo.wav ./back_stereo.wav reverse<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">{code}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I can provide example WAV files if that helps anyone but listening to the standard mixed and reversed mixed they appear to be identical.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">This seems a very odd situation / bug as the transfer is presumably adding different amount of delay during the call but both the in.wav and out.wav both have the same file size.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Any thoughts or feedback gratefully received.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Alex<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> asterisk-biz-bounces@lists.digium.com [mailto:asterisk-biz-bounces@lists.digium.com]
<b>On Behalf Of </b>Alexander Lopez<br>
<b>Sent:</b> 30 October 2014 14:36<br>
<b>To:</b> Commercial and Business-Oriented Asterisk Discussion<br>
<b>Subject:</b> Re: [asterisk-biz] Feature Bounty / Consultancy: Stereo support for MixMonitor<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">The out of sync issue happens when the call legs start at different times.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">The solution to this is to reverse the two files as the end times are exact.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Merge the files one on each side or a stereo mix,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">And then reverse the mix.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Alexander Lopez<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">OpSys Consulting Group<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">PO Box 49-1333<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Key Biscayne, FL 33149<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Tel: 305 503 3000 x 122<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Help-desk: (305)503-3000 Option 0 or
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Arial","sans-serif";color:#1F497D">Email:
<a href="mailto:HelpDesk@OpSys.com">HelpDesk@OpSys.com</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> <a href="mailto:asterisk-biz-bounces@lists.digium.com">
asterisk-biz-bounces@lists.digium.com</a> [<a href="mailto:asterisk-biz-bounces@lists.digium.com">mailto:asterisk-biz-bounces@lists.digium.com</a>]
<b>On Behalf Of </b>Alex Barnes<br>
<b>Sent:</b> Thursday, October 30, 2014 10:29 AM<br>
<b>To:</b> <a href="mailto:asterisk-biz@lists.digium.com">asterisk-biz@lists.digium.com</a><br>
<b>Subject:</b> [asterisk-biz] Feature Bounty / Consultancy: Stereo support for MixMonitor<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal">Hi,<br>
<br>
We would like to add stereo recording support to the MixMonitor application but don't have any C dev resource / experience in our company. Only PHP, Java and .Net but might be able to contribute some form of assistance if only testing etc.<br>
<br>
The intention is to have each party on a call as a separate audio channel. Happy to limit to two party calls and not conferences etc if that helps reduce scope.<br>
<br>
Could anyone recommend the best place to post this request, if it’s not here, or have any first hand recommendations of contractors they have used for similar projects?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We are unfortunately stuck with using MixMonitor rather than Montior due to a few issues:<br>
<br>
A) We are using FreePBX to control the dialplan and that requires MixMonitor without custom PHP dev work.<br>
<br>
B) When researching feasibility of customising FreePBX to use Monitor we tried to getting MixMonitor to output separate files came across issues with the two audio streams being out of sync. This was by using the 't' option in MixMonitor. Maybe this is truly
a bug and really what we should be focussing our efforts on.<o:p></o:p></p>
<p class="MsoNormal"><br>
The feedback from FreePBX community seemed to be that switching to use Monitor would be very difficult.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve read through a fair bit of the code and think I know what areas need extending / improving. For example the bug with the separate files seems likely to be around line 329 of audiohook.c.<br>
<br>
Many Thanks<br>
<br>
Alex<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="color:#1F497D">Alex Barnes <br>
Technical Director – Complete Automotive Solutions <o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="http://www.completeautomotivesolutions.co.uk/">http://www.completeautomotivesolutions.co.uk/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p> <o:p></o:p></p>
<p><span style="font-size:10.0pt;font-family:"Calibri","sans-serif"">The Manheim group of companies within the UK comprises: Manheim Europe Limited (registered number: 03183918), Manheim Auctions Limited (registered number: 00448761), Manheim Retail Services
Limited (registered number: 02838588), Motors.co.uk Limited (registered number: 05975777), Real Time Communications Limited (registered number: 04277845) and Complete Automotive Solutions Limited (registered number: 05302535). Each of these companies is registered
in England and Wales with the registered office address of Central House, Leeds Road, Rothwell, Leeds LS26 0JE. The Manheim group of companies operates under various brand/trading names including Manheim Inspection Services, Manheim Auctions, Manheim Direct,
Manheim De-fleet and Manheim Aftersales Solutions.</span> <o:p></o:p></p>
<p><span style="font-size:6.0pt;font-family:"Calibri","sans-serif"">V:0CF72C13B2AC<o:p></o:p></span></p>
<p> <o:p></o:p></p>
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