On a unit that can reproduce 3-20 kHz sounds, a good starting point would be slightly above 3 kHz. Play music and adjust to your preferences: Turn on a song or an audio file with a full, rich range of ...

The sound frequency below 20 Hz is Infrasonic sound and above 20 kHz is Ultrasonic sound. Human ear is not sensitive to ultrasound because the eardrum cannot vibrate as fast as US.

The frequency range is given as 300 Hz to 20 kHz, sound pressure level is 74 dB and total harmonic distortion is less than 10%.

A frequency of one cycle per second is called a hertz (Hz). One thousand Hz is a kilohertz (kHz). Most people can hear airborne sound that vibrates between 20 Hz and 20 kHz.

It then will partially close its mouth and send out a sound that ranges from audible to humans (7 kHZ to 20 kHz) to an ultrasound band (20 kHz to 44 kHz) that humans can’t hear.

Therefore, audio systems that have a flat frequency response (no variation in amplitude as the frequency changes) from 20 Hz to 20 kHz sound the most natural. Table 2 lists some typical ...