Install japa by entering the following commands in the terminal:
sudo apt update sudo apt install japa
Description:
JACK and ALSA Perceptual Analyser
Japa, is a 'perceptual' or 'psychoacoustic' audio spectrum analyser. Possible uses include spectrum monitoring while mixing or mastering, evaluation of ambient noise, and (using pink noise) equalisation of PA systems. . It supports up to four audio inputs of which two can graphically be compared. Additionally a pink noise and white noise generator is running after starting japa.
Homepage: http://kokkinizita.linuxaudio.org/linuxaudio/
Version: 0.8.4-2
Section: universe/sound