80Hz 80Hz Bruit Filtre En Tiers D'Octave -11db G+D 80Hz Signal Sinusoidal -11db G+D 80Hz Sine 80Hz sine wave 80Hz St 80Hz Terzbandbegr. Rauschen 80Hz Test 80Hz Warble 80Hz warble +-40Hz -1dB 60s 80Hz, -10dB Sinus 80Hz, 0dB, L+R (SineWave) 80Hz, 0dB, L+R (WarbleTone) 80Hz/85Hz sine wave