A one second sinewave of 440Hz, the frequency that corresponds to an A4.
A one second sinewave of frequency 490Hz
Sine wave. 440 Hz frequency Created with Audacity
A synthesized sinusoid of 440 Hz, corresponding to the frequency of the note A4, with a duration of 10 seconds ...
Made by a student in Lyon, France.
Sounds just like a telephone, in pack BEEP this is a GoLDBeRG.
UK "unobtainable"/"wrong number" tone, heard on UK land lines. I reproduced it from the ETSI ETS300-001 specification.
Telephone unobtainable or disconnect tone recorded in the UK
Set computer volume level at normal. Using headphones or your speakers, play each tone, gradually decreasing the volume until you ...
#!/bin/bash # # Create DTMF wav file with SoX # Create a file of the Digit "7" DTMF Tone # ...