UK "unobtainable"/"wrong number" tone, heard on UK land lines. I reproduced it from the ETSI ETS300-001 specification.

400hz sine wave sound

Set computer volume level at normal. Using headphones or your speakers, play each tone, gradually decreasing the volume until you ...

Telephone unobtainable or disconnect tone recorded in the UK

500hz sine wave sound

Set computer volume level at normal. Using headphones or your speakers, play each tone, gradually decreasing the volume until you ...

A synthesized sinusoid of 440 Hz, corresponding to the frequency of the note A4, with a duration of 10 seconds ...

a 440HzSine tone recorded at 96KHz 32bit uploaded mainly to test uploading to freesound but useful as a test tone ...

sinewave

audiobulb 440 hz 1 second sinewave - as used in the root of sine project

Escala temperada entre 200 Hz y 400Hz. Una escala mayor. A major scale, between G3 200Hz and G4 400Hz.

glasses

Este sonido corresponde a la escala pitagórica generada por intervalos de quinta, entre las notas G3 y G4. Es una ...

This sample is part of the "PPG MULTISAMPLE 016 Subfrequent" sample pack. The sound is a subbass based on a ...

Made using Audacity (only): 2 wave form : sinus 440 HZ 1 clic 1 Noise Apply a ducking on the ...