Categories: BeagleBone Black
Multichannel audio system based on BeagleBone Green/Black and AD1938 audio codec by Analog Devices Inc. The audio system offers 2 x 24 Bit stereo ADCs and 4 x 24 Bit stereo DACs.
- 2 stereo ADCs and 4 stereo DACs
- Up to 96 kHz sampling rate with 8 audio channels (up to 192 kHz with 4 channels)
- 24 Bit word width
- Separate interfaces to ADCs and DACs
- Asynchronous sampling rates for playback and capture
- Up to 3,2 ms round-trip-time
- Mobile usage (the Beaglebone Green and the audio card both are supplied with 5V supply voltage)
- I2S sound card (CTAG face2|4)
- Forked BeagleBone Linux kernel 4.1 with sound card drivers and modified device trees
- Adapter card “bbg-cape” to connect the BeagleBone Black/Green with I2S sound card
- Adapter card “con-cape” with stereo jacks and headphone amplifier, not yet published due to some bugs
- BASH script for automatic evaluation of latency, THD+N, DNR, crosstalk and frequency response using GNU Octave
- Surround-Delay audio effect for demonstration
- Debian Wheezy SD card image for BeagleBone Green (evaluation script and demonstration effect is included)
- Mobile sound studio (simultaneously record several inputs with different audio effects applied and preview them on different outputs in real time)
- Programmable effect device for various music instruments
- Open platform for DIY audio projects
- Eurorack analog I/O interfaces
The complete project is open sourced.
For more details visit our website or our hackaday project.
Feedback is welcome:)
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