Arch Linux

assimilat

Member

Registered: 2012-07-26

Posts: 8

Test tone generator?

Hi,
Im doing some hardware amplifier repair work and I need a signal/function/test tone generator but I cant seem to find a decent working up-to-date one that runs under linux. Ive tried baudline_jack but it just segfaults when I hit record with the tone generator enabled. Ive tried siggen but it looks for /dev/audio or /dev/dsp (which I dont have) and it segfaults. Ive tried all of the arachnoid.com ones and the java script one does work but it is limited for my purposes in that it doesnt generate sweeps. Ive even tried looking for LADSPA and LV2 plugins but I couldnt really find anything. Basically im looking for something as close to this "Test Tone Generator" as possible.

Any Ideas?

Edit:
I can get by with using the arachnoid generators modulator instead of a dedicated sweep but I would still like to find a good replacement. THX

Last edited by assimilat (2013-01-15 20:08:03)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,694

Re: Test tone generator?

You may want to look at sweep.  Maybe use that along with a package like Octave (or MatLab) to synthesize some files and then play them through sweep.

Not an off-the-shelf solution, but it might work.

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vadmium

Member

Registered: 2010-11-02

Posts: 63

Re: Test tone generator?

Sox (“Sound Exchange”) looks like it can generate sweeps in the “synth” function. It’s a command-line program normally for transforming audio, but I understand the “synth” function generates audio from scratch.

thisoldman

Member

From: Pittsburgh

Registered: 2009-04-25

Posts: 1,172

Re: Test tone generator?

Ive tried siggen but it looks for /dev/audio or /dev/dsp (which I dont have) and it segfaults.

You don't have /dev/audio because ALSA's oss emulation modules aren't loaded by default.  /dev/audio and /dev/dsp were created when I tried this:

# modprobe snd_pcm_oss

I don't know if this will get siggen working for you, I haven't tried it.

https://bbs.archlinux.org/viewtopic.php … 53#p776253
https://wiki.archlinux.org/index.php/Al … are_loaded
https://wiki.archlinux.org/index.php/Ke … es#Loading

assimilat

Member

Registered: 2012-07-26

Posts: 8

Re: Test tone generator?

Yup loading the oss module got siggen going thanks! Its odd to see so many competing electrical test and design application projects for cad, spice, virtual oscilloscopes etc... but basically zero active projects for signal generation. Guess I should stop complaining an write something...

Thanks again everyone!