Generate audio tones with adjustable frequency, waveform, and volume.
Generate pure audio tones at specific frequencies for tuning instruments, testing audio equipment, hearing tests, or educational demonstrations of sound wave properties.
Concert A (A4) is 440 Hz. Set the generator to 440 Hz and use it as a tuning reference for instruments. Some orchestras tune to 442 or 443 Hz.
Most people can hear frequencies from about 20 Hz to 20,000 Hz. This range narrows with age, especially the high end, which typically drops to around 15,000 Hz by middle age.