Binary package “jaaa” in ubuntu eoan

audio signal generator and spectrum analyser

 Jaaa (JACK and ALSA Audio Analyser) is an audio signal generator and
 spectrum analyser designed to make accurate measurements.
 .
 Jaaa allows you select on of the four inputs,
 'Min' and 'Max' the min and max displayed frequencies.
 There can be up to two markers which helps accurately
 read off values in the display.