Proto Devices
SOUND SAMPLES
Following are a number of interesting sound samples. Click the "play" button to the left
of each sample to hear the sound.
1 KHZ Sine Wave
The 1KHZ Sine Wave is the standard for calibrating audio amplifiers and is often
used to describe impedance of an a.c. circuit or component.
440 HZ Wave
The 440HZ tone or pitch is the standard tuning pitch for musical instruments.
On a piano keyboard, it is the note which is A above middle C.
Count Off
Count Off is a demo of a “text to speech program” that was used to create a .wav type file.
Different voices can be downloaded as desired.
British Police Siren
This sound sample is an emulated british car siren created by
alternating tones of 440hz and 550hz.