Sound above the upper threshold of hearing is called ultrasound. It is typically defined as sound with frequencies higher than 20,000 Hz, which is the upper limit of human hearing.
The human ear can typically detect sound intensities ranging from about 0 dB (threshold of hearing) to 120-130 dB (threshold of pain). Sounds below the threshold of hearing are too faint for the ear to detect, while sounds above the threshold of pain can be physically uncomfortable or damaging to the hearing.
Hypersonic sound refers to ultrasound frequencies beyond the range of human hearing, typically above 20 kHz. Since it is above the threshold of human hearing, hypersonic sound would not be audible, so it wouldn't be perceived as loud or soft.
The maximum sound level that can cause permanent hearing damage is around 130 decibels. Sound levels above 130 decibels can lead to hearing loss.
The maximum sound level that can cause permanent hearing damage is around 85-90 decibels. Sounds above this level, especially prolonged exposure, can lead to hearing loss. The threshold for permanent damage is much lower than 1100 dB.
Infrasound is sound that is lower in frequency than 20 Hz (Hertz) or cycles per second, the normal limit of human hearing. Ultrasonic waves have frequencies above the audible range at around 20 kHz. Audible sound is within human 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.
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 human ear can typically detect sound intensities ranging from about 0 dB (threshold of hearing) to 120-130 dB (threshold of pain). Sounds below the threshold of hearing are too faint for the ear to detect, while sounds above the threshold of pain can be physically uncomfortable or damaging to the hearing.
Hypersonic sound refers to ultrasound frequencies beyond the range of human hearing, typically above 20 kHz. Since it is above the threshold of human hearing, hypersonic sound would not be audible, so it wouldn't be perceived as loud or soft.
The maximum sound level that can cause permanent hearing damage is around 130 decibels. Sound levels above 130 decibels can lead to hearing loss.
At the threshold of hearing the sound intensity is 10-12 watts per square meter equivalent to 0 dB. Our eardrums are moved by sound pressure variations and so are microphone diaphragms. Forget the intensity! At the threshold of hearing the sound pressure is 2x10-5 pascals or 2x10-5 newtons per square meters, equal to 0 dBSPL.
Listen to a tone and measure with a sound pressure level meter (SPL meter). Try to measure the sound pressure p in pascals or in decibels, referred to the threshold of hearing with 20 micropascals. When the tone is just not be heard that's the threshold of hearing.
The maximum sound level that can cause permanent hearing damage is around 85-90 decibels. Sounds above this level, especially prolonged exposure, can lead to hearing loss. The threshold for permanent damage is much lower than 1100 dB.
Ultasound
Infrasound is sound that is lower in frequency than 20 Hz (Hertz) or cycles per second, the normal limit of human hearing. Ultrasonic waves have frequencies above the audible range at around 20 kHz. Audible sound is within human hearing range.
The absolute threshold of hearing is the lowest possible tone/decibel you could possibly hear. (This differs form person to person). The Differential Threshold is the point at which a person recognizes the decibel level has changed.Hope this answers your question, just learned this in psychology!
Kim's hearing threshold.