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Re: Simultaneous recording with two digital recorders?

Subject: Re: Simultaneous recording with two digital recorders?
From: "Jez" tempjez
Date: Fri Jun 8, 2012 10:21 am ((PDT))
Hi Alberto,

welcome to the group.

just a quick question: do you mean localizing deer when you say 'one of the 
first studies' ? if so, I think there'll be lots of folks on here who'll let 
you know that localizing deer & other wildlife using multiple recorders / 
devices is quite a common activity.

--- In  Alberto Carradore <> wrote:
> Hi to all,
> I'm a quite new, silent but very interested member of this goup.
> Happy to join it  :)
> During my MSc thesis I've tried to localize deer using three SongMeter
> recorders.
> They were not pre-synchronizable and the internal clocks were not precise
> enough for my purpose, hence I synchronized them emitting a whistle from a
> point equidistant from the recorders.
> You can download the whole work (in english) with the description at the
> following link:
> In few days I will add the presentation too.
> It is - according to my knowledge - one of the first studies doing that, I
> know there is still a lot of work left.
> I hope to find the way to go on with it...
> Anyway, if you have critics or comments I'd be glad to receive them.
> Hope it can be useful
> Good job
> Alberto Carradore
> 2012/6/8 Marc Myers <>
> > **
> >
> >
> > Synchronization is a big topic in audio for video. Each device will have
> > some error in their internal clocks and so one can expect them to drift
> > relative to one another over time. How much would be an experiment. You
> > could certainly add the tracks together in most audio mixing software and
> > compare. One could check for the difference ( it will sound like reverb and
> > likely won't be that great unless you've been recording for a long period
> > of time) by matching the waveform at the beginning and then go to the end
> > and measure the difference. Synchronizing them would be a second step.
> > I can't verify but it's been reported to me that the audio time-stretching
> > utility accurate enough for adjusting long recordings is the TimeWarp
> > function in the $19 GoldWave audio editor.
> >

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