/tmp/arduino_build_386580/sketch/teensy-vult-example.ino.cpp.o: In function `AudioOutputADAT::AudioOutputADAT()':
/home/syso/Downloads/arduino-1.8.19/hardware/teensy/avr/libraries/Audio/output_adat.h:34: undefined reference to `AudioOutputADAT::begin()'
/tmp/arduino_build_386580/sketch/teensy-vult-example.ino.cpp.o: In function `AudioStream::AudioStream(unsigned char, audio_block_struct**)':
/home/syso/Downloads/arduino-1.8.19/hardware/teensy/avr/cores/teensy4/AudioStream.h:137: undefined reference to `vtable for AudioOutputADAT'
collect2: error: ld returned 1 exit status