Test USB audio and MIDI integration of Dirtywave M8 with Raspberry Pi Zero 2 W running ChucK

[znmeb]

[znmeb]

1. I'm currently testing with beta 4 version of the M8 6.3.0 firmware, but will retest with 6.2.2 if 6.3.0 works. There's nothing in the M8 USB interface on 6.2.2 that would rule out what I'm doing.
2. I'm currently testing on a Model:01 M8 but will also test on a Model:02.
3. I will also test on a raw Teensy 4.1 in headless mode.

[znmeb]

So far everything looks good:

 $ chuck --probe --driver:pulse
[chuck]: [Pulse] driver found 4 audio device(s)...
[chuck]: 
[chuck]: ------( audio device: 1 )------
[chuck]: device name = "ULT WEAR"
[chuck]: probe [success]...
[chuck]: # output channels = 2
[chuck]: # input channels  = 0
[chuck]: # duplex Channels = 0
[chuck]: default output = YES
[chuck]: default input = NO
[chuck]: natively supported data formats:
[chuck]:   16-bit int
[chuck]:   24-bit int
[chuck]:   32-bit int
[chuck]:   32-bit float
[chuck]: supported sample rates:
[chuck]:   8000 Hz
[chuck]:   16000 Hz
[chuck]:   22050 Hz
[chuck]:   32000 Hz
[chuck]:   44100 Hz
[chuck]:   48000 Hz
[chuck]:   96000 Hz
[chuck]:   192000 Hz
[chuck]: 
[chuck]: ------( audio device: 2 )------
[chuck]: device name = "M8 Analog Stereo"
[chuck]: probe [success]...
[chuck]: # output channels = 2
[chuck]: # input channels  = 2
[chuck]: # duplex Channels = 0
[chuck]: default output = NO
[chuck]: default input = YES
[chuck]: natively supported data formats:
[chuck]:   16-bit int
[chuck]:   24-bit int
[chuck]:   32-bit int
[chuck]:   32-bit float
[chuck]: supported sample rates:
[chuck]:   8000 Hz
[chuck]:   16000 Hz
[chuck]:   22050 Hz
[chuck]:   32000 Hz
[chuck]:   44100 Hz
[chuck]:   48000 Hz
[chuck]:   96000 Hz
[chuck]:   192000 Hz
[chuck]: 
[chuck]: ------( audio device: 3 )------
[chuck]: device name = "Monitor of M8 Analog Stereo"
[chuck]: probe [success]...
[chuck]: # output channels = 0
[chuck]: # input channels  = 2
[chuck]: # duplex Channels = 0
[chuck]: default output = NO
[chuck]: default input = NO
[chuck]: natively supported data formats:
[chuck]:   16-bit int
[chuck]:   24-bit int
[chuck]:   32-bit int
[chuck]:   32-bit float
[chuck]: supported sample rates:
[chuck]:   8000 Hz
[chuck]:   16000 Hz
[chuck]:   22050 Hz
[chuck]:   32000 Hz
[chuck]:   44100 Hz
[chuck]:   48000 Hz
[chuck]:   96000 Hz
[chuck]:   192000 Hz
[chuck]: 
[chuck]: ------( audio device: 4 )------
[chuck]: device name = "Monitor of ULT WEAR"
[chuck]: probe [success]...
[chuck]: # output channels = 0
[chuck]: # input channels  = 2
[chuck]: # duplex Channels = 0
[chuck]: default output = NO
[chuck]: default input = NO
[chuck]: natively supported data formats:
[chuck]:   16-bit int
[chuck]:   24-bit int
[chuck]:   32-bit int
[chuck]:   32-bit float
[chuck]: supported sample rates:
[chuck]:   8000 Hz
[chuck]:   16000 Hz
[chuck]:   22050 Hz
[chuck]:   32000 Hz
[chuck]:   44100 Hz
[chuck]:   48000 Hz
[chuck]:   96000 Hz
[chuck]:   192000 Hz
[chuck]: 
[chuck]: 
[chuck]: ------( 2 MIDI inputs  )------
[chuck]:     [0] : "Midi Through:Midi Through Port-0 14:0"
[chuck]:     [1] : "M8:M8 MIDI 1 16:0"
[chuck]: 
[chuck]: ------( 2 MIDI outputs )-----
[chuck]:     [0] : "Midi Through:Midi Through Port-0 14:0"
[chuck]:     [1] : "M8:M8 MIDI 1 16:0"
[chuck]: 
[chuck]: ------( 2 keyboard devices )------
[chuck]:     [0] : "ULT WEAR (AVRCP)"
[chuck]:     [1] : "vc4-hdmi HDMI Jack"
[chuck]: 

It looks like PulseAudio is capable of resampling audio from the M8. It's probably not a good idea to do that though; it uses CPU time and might introduce noise.