[Asterisk-Dev] Re: How to measure delay in meetme?

[Mike Taht]

Very clever. Exactly the sort of thing I'm trying to do in software with 
jackd and a jack scope...

On 8/31/05, Clive Nicolson <clive at baby.bedroom.gen.nz> wrote:
> 
> 
> Get a dual channel oscilloscope, a audio signal generator, a small speaker
> and a microphone. Set the generator to a frequency lower that the delay 
> you
> think you are hearing. Feed the signal to the speaker and one channel of
> the scope (trigger of this signal), adjust the level so you can hear it.
> Connect the microphone to the other scope's other channel and place the
> microphone near the speaker. Adjust the gain on that channel so that you
> can compare the 2 undelayed signals.
> 
> Now place the speaker near the mouth piece of one phone and the microphone
> near the ear piece of other phone. Establish a call between these phones.
> 
> You should be able to measure the delay over that path on the scope!
> 
> Borrow the scope and signal generator and get the speaker and microphone
> from Tandies (your local electronics store).
> 
> Clive
> 
> _______________________________________________
> Asterisk-Dev mailing list
> Asterisk-Dev at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-dev
> To UNSUBSCRIBE or update options visit:
> http://lists.digium.com/mailman/listinfo/asterisk-dev
> 



-- 
Mike Taht
PostCards From the Bleeding Edge
http://the-edge.blogspot.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-dev/attachments/20050831/ebadc4e9/attachment.htm