How are the sound of frequency greater than 20 kHz?

The human ear cannot sense frequencies above 20000 vibrations per second (20 KHz) in the high-frequency range, and the amplitude of the wave will be dependent on the sound’s loudness. Hence, sound waves having frequency more than 20000Hz are called ultrasonic sound.

Can a smartphone produce ultrasonic sound?

The phone’s speaker can reproduce a maximum frequency of 18-20 kHz. Ultrasound – this is the frequency above 20 kHz. It is impossible to generate ultrasonic signal.

What is the frequency range of sound that humans cannot detect?

Human ear cannot detect sound frequencies less than 20 vibrations per second i.e. 20 Hz. So any sound below this frequency will be inaudible sound for humans. In the high-frequency range, the human ear cannot detect frequencies above 20000 vibrations per second (20 KHz) and the amplitude of the wave would be depending on the loudness of the sound.

What is the frequency below 20 Hz called?

So the frequencies below 20 Hz and above 20 kHz comes under the category of inaudible frequencies. The low-frequency sound which the human ear cannot detect is also known as infrasonic sound.

Can a smartphone speaker produce 20 000 Hz of sound?

If there is no music source playing, turning an amplifier volume knob way up can frequently expose line frequency hum and sometimes 2X (100 or 120 Hz) hum to some from the speaker. Can a regular smartphone speaker create 20,000 Hz of sound? The most probable is yes, speaker drivers typically can do 100–20000Hz range.

Can a mobile phone produce a high-frequency sound?

Processing speed is another important factor in creating high-frequency signals, but mobile phones have processors that run at many megahertz, in fact often at gigahertz, so producing a signal of the order of say 40khz should not be a problem. Originally Answered: Can a mobile produce sound which’s intensity is more than 20k Hz? Probably not.