Hello, all...

I'm trying to use the documented special constructor for AudioInputAnalog on a Teensy4, whereby I feed it a uint8 to choose which ADC-capable pin it attaches to. Like so....

Code:
AudioInputAnalog         light_adc(22);  //xy=88.00000381469727,389.0000171661377
AudioInputAnalog         mic_adc;      //xy=89.00000762939453,422.4285945892334
Documentation suggests I ought to be able to do this, but GCC fails the build like so...

Code:
/tmp/arduino_build_647277/sketch/Tricorder-Mk2.ino.cpp.o: In function `AudioInputAnalog::AudioInputAnalog(unsigned char)':
/opt/Arduino/hardware/teensy/avr/libraries/Audio/input_adc.h:38: undefined reference to `AudioInputAnalog::init(unsigned char)'
/tmp/arduino_build_647277/sketch/Tricorder-Mk2.ino.cpp.o: In function `AudioStream::AudioStream(unsigned char, audio_block_struct**)':
/opt/Arduino/hardware/teensy/avr/cores/teensy4/AudioStream.h:129: undefined reference to `vtable for AudioInputAnalog'
Compile works if I leave the constructor without arguments. Compile also works WITH the argument if I target a Teensy3.2, so I think it's a bug in the Teensy4 implementation of Audio.

I am presently working from the github master branch of Audio.

Any help would be appreciated.

---Ian