Re: Using a sound card for measurement.

Edmund wrote:
> Hi experts,
> I want to do some testing with a sound card for measurements.
> A few things I need are :
> 1 Some player which can play 192kHz sampled sounds.
> 2 A way of “making” such sound file from a PCM data text file.
> 3 An oscilloscope program which can record about 20 minutes 
>   of 192kHz sampled data and save it as PCM text data.
> 
> My sound card can produce a remarkably good sine wave up til
> a least 45 kHz ( did not yet test higher yet ) with a sound generator
> but this generator can not automatic produce all frequencies I want.
> 
> What kind sound file format can be used for reproducing 96kHz
> with a PC / laptop ?
> Is there any (free?) tool out there to make such a sound file?
> 
> Thanks
> 
> Edmund

This is a problem in several bits.

Any player should play 192k sampled sounds provided your sound card will 
sup****t that rate - this is a matter of drivers, not programmes.

Text is a valid PCM format (look up RIFF headers in Google for the full 
list of formats you might find enclosed in a .WAV wrapper). Some systems 
are not set up to read text PCM, though.

For creating and recording sounds/signals your best bet is probably an 
audio editor. Audacity is a powerful piece of freeware that will do 
anything reasonable you need.

For serious analysis you need a mathematical tool, and they will always 
cost. Matlab is the most versatile one that comes to mind.

d