ANAN-G2 Manual Page 23 of 35
4.3.2 Audiotest
This is a simple application for checking audio inputs and outputs. For example it can be used to test
if a new headset or microphone is working.
The program may already be installed onto your linux desktop. If not you can run it simply from a
linux command prompt. Open a command window then type:
• cd github/Saturn/sw_projects/audiotest
• ./audiotest
Usage:
Plays a test tone with selectable volume while the button is pressed into the Left
or Right audio channels.
Enables recording for the (adjustable) duration followed by playback of the
recording. A progress bar shows how much time has elapsed, and the current
operation (record/replay/idle) is indicated.
The mic level bar shows a linear representation of signal level, with max signal at
the right.
If checked, selects the balanced microphone input instead of the 3.5mm jack.
If selected, applies bias to the 3.5mm mic input.
If checked, increases the audio gain of the Codec by 20dB. Typically needed for
dynamic microphones and not for electret ones.
Selects the microphone signal to be on the tip of the 3.5mm jack. If not selected
the ring terminal will be used.
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