Вот кстати разъяснения из FAQ FluxMedia по поводу "Playback" и Record"
In certain sections of settings you've noticed that there are field for "record" and "playback" devices. These are defined as follows:
Record Device
SatRadio, Radio
This is the line-in recording device that your hardware is connected to. It is used by Centrafuse to "record" the audio input.
This mode is used if "Buffer" is turned ON for this audio type.
If using Buffer, the Playback device can be left at "None", or it can be set to the same physical line-in that the recording device is set to.
Phone
This is the line-in recording device that you have your microphone connected to. It is used by the Centrafuse Bluetooth stack to record voice and send it to the remote caller.
Playback Device
SatRadio, Radio
This is the line-in playback device that your hardware is connected to. It is used by Centrafuse to "pass through" audio input to the output.
This mode is used if "Buffer" is turned OFF for this audio type. If not using buffer, the record device should be set to "None".
PLEASE NOTE: The playback line should never be set to the WAV or Master lines. This will cause unexpected results, such as the systems audio will be completely muted.
Phone
This is the sound card that the Centrafuse Bluetooth stack will use to play back audio which is received from the remote calling party.
In the case of some phones, it will also allow play back of the ring tone, dialing sound, keypad touches, etc.
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