[sdiy] Good 16 bits A/D choice for mono audio recording

[Richard Wentk]

On 25 May 2007, at 15:11, Colin f wrote:

>
>> I need to build a remote circuit that
>> will be installed in a remote forest region in Canada. It
>> will be similar to a datalogger type of application but the
>> unit will record mono audio 16bits/44ksample sec. for a
>> specified amount of time in a SD memory card.
>> The audio data will then be downloaded via cellular modem.
>
> If you're trying to answer the old "if a tree falls in a forest,  
> and no-one
> is there" question, I'm afraid the presence of an audio recording data
> logger counts as someone being there, though the noise isn't  
> actually made
> until someone listens to the recording.

Of course, this assumes the recording is being made while no one is  
listening to it.

Since the recorder is solid state the recording counts as a quantum  
event. So it remains in a state of sonic indeterminacy until the  
state vector is collapsed with an observation.

I'd quite like a module that makes a noise using this technique. But  
since no one would be able to be tell whether or not it was  
installed, I'm not sure how useful it would be.

Richard