Telephone beep of an answering machine. This is a sound wave of 825 Hz sinusoidal frequency. This sound is easy to loop. UCS Category: COMTelph. Duration: 00:01.
Telephone tone when the phone rings in Europe. This is a sound wave frequency of 440 Hz sinusoidal. This sound is easy to loop. UCS Category: COMTelph. Duration: 00:40.
Telephone tone when the phone rings, in the United States and Canada. These are two sound waves of frequencies 440 Hz and 480 Hz sinusoidal. This sound is easy to loop. UCS Category: COMTelph. Duration: 00:30.