# Add a test audio signal for check

**URL:** <https://discourse.zynthian.org/t/add-a-test-audio-signal-for-check/197>\
**Category:** Software\
**Created:** [October 23, 2016, 9:58am UTC](https://discourse.zynthian.org/t/add-a-test-audio-signal-for-check/197 "2016-10-23T09:58:13Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![videobelu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/videobelu/32/10_2.png) [@videobelu](https://discourse.zynthian.org/u/videobelu)\
**Post date:** [October 23, 2016, 9:58am UTC](https://discourse.zynthian.org/t/add-a-test-audio-signal-for-check/197/1 "2016-10-23T09:58:13Z")

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I would like to suggest a new function in the menu to send a test audio signal to the stereo output to check the correct working of the audio connection inside or outside the Zyinthian …this in the case no keyboard is available .

Thanks

Fabrizio

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**Author:** ![jofemodo](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/jofemodo/32/2_2.png) [@jofemodo](https://discourse.zynthian.org/u/jofemodo)\
**Post date:** [October 23, 2016, 10:32am UTC](https://discourse.zynthian.org/t/add-a-test-audio-signal-for-check/197/2 "2016-10-23T10:32:07Z")

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Hi Fabrizio!

I like your idea of adding a new function to the admin menu:

> - **Test Audio Output** : that sends a predefined audio signal to the audio output for testing that the audio device is working correctly.

And i would add another function:

> - **Test Synth Engine** : that send a predefined MIDI sequence to channel 1, so you can test any synth engine without a keyboard.

What do you think? 😉

Regards!

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**Author:** ![videobelu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/videobelu/32/10_2.png) [@videobelu](https://discourse.zynthian.org/u/videobelu)\
**Post date:** [October 23, 2016, 12:53pm UTC](https://discourse.zynthian.org/t/add-a-test-audio-signal-for-check/197/3 "2016-10-23T12:53:02Z")

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Yes good idea… Paul and Marco tell me that another useful thing would be a flashing icon on screen when a midi signal is recived… Or someting else…

Fabrizio

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**Author:** ![cdswift](https://discourse.zynthian.org/letter_avatar_proxy/v4/letter/c/97f17d/32.png) [@cdswift](https://discourse.zynthian.org/u/cdswift)\
**Post date:** [October 24, 2016, 3:37pm UTC](https://discourse.zynthian.org/t/add-a-test-audio-signal-for-check/197/4 "2016-10-24T15:37:00Z")

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I agree with this suggestion. A couple of looping test sequences would be good.

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**Author:** ![C0d3man](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/c0d3man/32/9_2.png) [@C0d3man](https://discourse.zynthian.org/u/C0d3man)\
**Post date:** [October 24, 2016, 3:47pm UTC](https://discourse.zynthian.org/t/add-a-test-audio-signal-for-check/197/5 "2016-10-24T15:47:22Z")

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They should be easy to integrate since there ia a LV2 Plugins for a test tone also than a step sequencer and midi capable engines. Will have this in mind when creating default setups for MOD/LV2.

Regards, Holger

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**Author:** ![jofemodo](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/jofemodo/32/2_2.png) [@jofemodo](https://discourse.zynthian.org/u/jofemodo)\
**Post date:** [October 24, 2016, 4:35pm UTC](https://discourse.zynthian.org/t/add-a-test-audio-signal-for-check/197/6 "2016-10-24T16:35:13Z")

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Hi @all!

I’ve added a new entry “Audio Test” to the admin menu that “plays” a small mp3 file using the jack server. It uses “mpg123” to play. Also, i would add a MIDI player to simulate the “MIDI INPUT” , so it can be used as a kind of “synth engine test”.

Both improvements will be available in the next SD image, in a couple of weeks 🙂

Regards!