[LAU] Soundcard Oscilloscope

[Christopher Obbard]

Hi Will,

I will be looking for a solution to this exact problem today, as I
need to measure & generate some audio signals.

Basically need to measure the time between two pulses, maybe a couple
of thousand times.

I was thinking of just using Audacity to generate a pulse out of the
line out, then measure the signal on the other channel.

Is there any software I can use to make life easier?

>From a quick look xoscope [http://xoscope.sourceforge.net/] looks
good, and it's already packaged for Debian.
Apparently it supports cursors too.

For the "automated test" I am thinking of exporting the data after
it's triggered as a CSV then process later in some python.
Maybe I will have to patch xoscope to do this, who knows.


It may just be cheaper to use sigrok and get a cheap Hantek scope for
£41, but this is all part of the fun :-).
Maybe a sigrock ALSA driver would be an interesting thing to write?


Cheers!
Chris

On 22 March 2018 at 21:00, Will Godfrey <willgodfrey at musically.me.uk> wrote:
> Has anyone got any experience of these?
> Are they in fact any good?
>
> I would imagine that running one at 96k, 16bit should give a good enough
> bandwidth and resolution for checking most audio kit.
>
> Which rather begs the question, why are almost all digital scopes only 8bit...
> unless you spend a fortune on them?
>
> --
> Will J Godfrey
> http://www.musically.me.uk
> Say you have a poem and I have a tune.
> Exchange them and we can both have a poem, a tune, and a song.
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