Audio Codec Adapter Setup for Cinterion
®
Modules
3.1 Assembly with DSB75 and AH6-DSB75 Adapter
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audio_codec_adapter_setup_v04 2019-10-16
Confidential / Released
Page 23 of 34
3.1.2.4 Tone Recognition
The Audio Codec Adapter itself is also able to recognize tones from the adapter’s local headset
interface (i.e., the microphone) even without an active call. This can be done by calling the fol-
lowing command in Terminal mode:
DSP=detect Detect tones on local codec interface without call
> f=1000Hz, -38dB, 119msec detected
> f= 720Hz, -34dB, 119msec detected
DSP=off
Stop tone recognition
As no active call is required for this "local" mode, the feature can be used to detect tones that
can directly come from the headset’s microphone.
The tone recognition is limited to 500msec tone duration. Longer tones are recognized as 2 or
more tones.
Note: The Audio Codec Adapter can either generate or recognize tones, but not both at the
same time.
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