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Ultrasonography
They are known as Overtones. If they are beyond the range of human hearing, they are called ultrasound, or ultrasonic waves.
The range of human hearing includes frequencies from about 15 to about 18,000 cycles per second. This varies from one individual to another, especially at the higher frequencies. High frequencies usually become less audible with age.
Technically the potential hearing range of a human includes sounds from 20 hertz to 20,000 hertz. The average person's hearing range is usually between 20 Hz to 20 kHz (or 20,000 Hz). However, this varies from person to person and also declines with age.
ultrasonography
they have different hearing range
Sound waves with frequencies above the normal human range of hearing are called ultrasoundUltrasoundUltrasonic for frequencies higher than a human can hear, and infrasonic for those frequencies below the human threshold of hearing.
the hearing range of human being is from 20hz to 20000hz
Sound waves with frequencies above the normal human range of hearing are called ultrasoundUltrasoundUltrasonic for frequencies higher than a human can hear, and infrasonic for those frequencies below the human threshold of hearing.
Ultasound
Infrasound ( below the range of human hearing ) Sonic Range ( within the range ofhuman hearing ) Ultrasound ( above range of human hearing )
they have different hearing range
Infrasound.
"supersonic"
The human range of hearing is from 20 Hertz to 15,000 Hertz, with individual variations. Most humans lose some of their higher range as they age.
The opposite of ultrasound (above the human hearing range) is infrasound (below the human hearing range).
they have different hearing range