General Acoustics FAQ | Page 1


Q. What is sound?

Q. What is decibel, dB?

Q. How do I relate decibel to common sounds?

Q. What is Frequency?

Q. How do I measure sound level and frequency?

Q. What is Sound Proofing?

Q. What is Sound Absorption?

Q. Is loudness the only thing that causes disturbance?

Q. Why do I feel partially deaf after listening to prolonged loud music?

GENERAL ACOUSTICS FAQ


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Q. What is Frequency?
 

A. Frequency represents the pitch of a sound. The unit used to measure frequency is called Hertz (Hz), which is defined to be the number of cycles a sound wave vibrates in one second. A sound with high frequency (such as 16kHz) is a high pitched sound. A sound with low frequency (such as 63Hz) is a low pitched sound. In musical terms, a high frequency sound is referred to as treble while a low frequency sound is referred to as bass.

 
A young person with normal hearing can detect a wide range of frequencies from about 20Hz to 20,000Hz.