Binary package “jack-stdio” in ubuntu focal
program to pipe audio-data from and to JACK
jack-stdout is a small tool that writes JACK audio-sample data to
buffered standard output. jack-stdin reads raw audio data from
standard input and writes it to a JACK audio port.
.
By default jack-stdout writes 16 bit signed integer raw audio data
(much like mpg123 -s at JACK's samplerate, but it can output
signed/unsigned 8/16/24/32 bit integer and 32bit floating-point
data, both big/little endian.