Arctic_Eddie
Well-known member
I'm using the T4 dual ADC in sync mode to capture both channels in 6.3 usec(167Ks/s). Adding two 3-pole HP Bessel filters sequentially adds only 0.4 usec. There will be some software mixing of the input audio and the filter output to enhance the high freqs but that should be trivial. There's also some Serial.print statements in the loop now that will be removed or made active when a monitor is connected. The loop is timed to repeat every 50 usec so there's plenty of time to do the DAC output as long as they're not I2C based. I looked at the audio shield and tutorial but find it quite intimidating as to what goes into the setup() and loop() routines. That option is still open as the Adafruit board and no T4 compatible library is a 'no' at this point. All I really need now is a fast DAC output.