Acts as a microphone input. See Audio Sink for a block that outputs to a speaker.
Not all sampling rates will be supported by your hardware. The audio source can have multiple outputs depending upon your hardware. For example, set the outputs to 2 for stereo audio.
- Sample Rate
- Audio sampling rate used, click the drop-down menu to see popular rates. Note, not all sampling rates will be supported by your hardware. For typical applications, this should be set to 48kHz.
- Device Name
- Leave the device name blank to choose default audio device. Other typical choices include:
- ALSA users with audio trouble may try setting the device name to plughw:0,0
- OK to Block
- On by default, which should be used when this sink is not throttled by any other block.
This flowgraph shows the Audio Source block feeding a radioteletype (RTTY) decoder.