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are waves in the air
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Sound waves are created when air molecules are set into motion and their energy is transmitted to adjacant air molecules. Sounds can be of very different character. There are simple sounds tinnitus patients such as pure tones (which contain one frequency component only) and complex sounds such as speech or noise that consists of many frequency components. Most of the sounds we hear every day are complex sounds. Frequency tinnitus patients The frequency of a sound is the number of cycles of a sound wave in one second. The unit of measurement is hertz (Hz). The frequency of a sound increases as the number of cycles per second tinnitus patients increase. Vibrations between 20 and 20,000 cycles per second are interpreted as sound by a normal healthy person. A high-pitched sound could be a piccolo flute or a bird singing. Low-pitched sounds could tinnitus patients be thunder heard from far away or tones from a bass guitar. DeciBel (dB) The term dB (deciBel) and the dB scale is used all over the world for the measurement of sound levels. The deciBel scale is a logarithmic tinnitus patients scale where a doubling of sound pressure corresponds to a 6 dB increase in level. It is very important to realize that the term ’dB’ can have different meanings and is not a fixed value like the volt or the meter [Email: info@medical.hear-it.org] |