chipaudette
Well-known member
Hi All,
As part of my work on an open source platform for hearing aid algorithms, we made a new audio interface board, much like the Teensy Audio Board. Our board, though, is based on the Texas Instruments TLV320AIC3206 (aka. "3206"). Our goal was to make a board with quieter inputs so that we'd have more dynamic range. The 3206 was a helpful step to achieving that.
I really like working within the Teensy audio library ecosystem. So, in making this new board, we wrote a control module (like the SGTL5000 control module for the Teensy Audio Board) that allows the 3206 to work with the Teensy audio library. The 3206 is an I2S device just like the SGTL500, so you send and receive audio data to the 3206 using the same I2S input and output functions as used for the Teensy Audio Board. Pretty sweet!
If you're interested in details (schematic, BOM) or in my measurements of its self-noise and dynamic range, you can check it out here: http://openaudio.blogspot.com/2017/03/tympan-self-noise.html


I'm surprised at how easy it was to plug this new hardware into the Teensy audio ecosystem. Very fun.
Chip
As part of my work on an open source platform for hearing aid algorithms, we made a new audio interface board, much like the Teensy Audio Board. Our board, though, is based on the Texas Instruments TLV320AIC3206 (aka. "3206"). Our goal was to make a board with quieter inputs so that we'd have more dynamic range. The 3206 was a helpful step to achieving that.
I really like working within the Teensy audio library ecosystem. So, in making this new board, we wrote a control module (like the SGTL5000 control module for the Teensy Audio Board) that allows the 3206 to work with the Teensy audio library. The 3206 is an I2S device just like the SGTL500, so you send and receive audio data to the 3206 using the same I2S input and output functions as used for the Teensy Audio Board. Pretty sweet!
If you're interested in details (schematic, BOM) or in my measurements of its self-noise and dynamic range, you can check it out here: http://openaudio.blogspot.com/2017/03/tympan-self-noise.html


I'm surprised at how easy it was to plug this new hardware into the Teensy audio ecosystem. Very fun.
Chip