Changing the volume of individual tracks

Audacity 3 Help Forum Windows
3

This code can be run in the “Nyquist Prompt” effect (in the “Effect” menu).
It will show the peak amplitude of the selected audio (in dB) accurate to 4 decimal places.

(defun printdb (sig)
  (linear-to-db (peak sig ny:all)))

(if (arrayp s)
    (format nil "Left Channel: ~a dB.~%~
                Right Channel: ~a dB."
                (printdb (aref s 0))
                (printdb (aref s 1)))
    (format nil "Mono Trackl: ~a dB." (printdb s)))