Re: Using a sound card for measurement.

"Edmund" wrote ...
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.

So go shopping for a sound card that fits your requirements.
Don't be surprised if you don't find any popular-priced
products that will have that range, however. You may be
forced to look at industrial lab equipment if you want
waveform generation up in those ranges.

2 A way of “making” such sound file from a PCM data text file.

The math for creating sine waves is pretty simple. Most
any programming language (even one-chip microcontrollers)
have a "sine" function.

3 An oscilloscope program which can record about 20 minutes
of 192kHz sampled data and save it as PCM text data.

Are you sure you want that? You are talking about 230,400,000
sample values per channel. Do you have the software it takes
to analyze (or even view) a text file that large?

You also don't mention any bit-depths (8 bit?, 16 bit?,
24 bit?) What is the application?

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.

The only difference between a sine wave at 1KHz and a sine
wave at 100KHz is the period. The math is the same

What kind sound file format can be used for reproducing 96kHz
with a PC / laptop ?

No difference from the one that will do 9.6 KHz.
The difference is in the hardware, not the software or the data.

Is there any (free?) tool out there to make such a sound file?

How are you making the files you are using now?

There are free and inexpensive software applications that
will create various waveforms using your computer sound
card. Google can find them for you in a few milliseconds.

If you get hardware that supports 192KHz, it will almost
certainly come with software that will run it, or at least
demonstrate its capabilities.

.

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