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How does a sound wave for a high pitch noise differ to one of a low pitch noise?
Wiki User
∙ 11y ago
Sound is the vibration of air molecules. The higher the pitch, the faster the vibration. The stronger the vibration, the louder the sound. Pitch is measured in Hertz (Hz). 1 Hertz means the molecule vibrates 1 time per second (back and forth), 10 Hz means 10 times per sec. etc. Humans hear sounds from 20 Hertz (very deep bass) to 20.000 Hertz (=20 kHz) (very high sizzling)
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoSound can be thought of as a wave field present in the air that causes a periodic change in pressure at each point: the higher the frequency of vibration at a given point, the higher the perceived pitch will be.
In fact, musicians often tune to what is known as "A 440", meaning the pitch generated by a frequency of 440 Hz (a Hertz is the number of complete wave cycles per second) commonly accepted as "middle A".
So, recalling that period is the inverse of frequency (seconds per cycle is the inverse of cycles per second), it can be said that a vibration's period and/or frequency determine its pitch!
If you want to be a little more specific (I'm not sure if the phyiscal or musical context is important in this answer), say I start with middle A (440 Hz)... in many Western cultures a scale consisting of 12 semitones (half steps) determines an "octave" (an octave is the relationship between two pitches such as those that sound the first two notes of "Somewhere over the Rainbow.. Sooome-wheeere..")
It is easily shown experimentally that the wave relationship between two notes in an octave is a doubling in frequency. This means that if a wave at 440 Hz sounds like "Soooome", then an A at 880 Hz will sound like the consequent "wheeere."
The frequency-to-pitch scale is logarithmic, meaning if I want to hear ANOTHER octave above 880 Hz, I do not ADD 440 Hz, but I DOUBLE frequency once again.
Thus, octaves above middle A are given by 440 Hz, 880 Hz, 1760 Hz, 3520 Hz, etc.
Wiki User
∙ 11y agoYes. The frequency of the sound determines its pitch. The two are directly correlated. For example, the higher you go on a row of piano keys, the higher the frequency and the higher the pitch.
Yes. It is simply understood by the relation that frequency is directly proportional to pitch
Yes.
Wiki User
∙ 11y agoHigh pitch = high frequency = short wave
Low pitch = low frequency = long wave
Wiki User
∙ 11y agoHigh pitch = short wave
Low pitch = long wave
Wiki User
∙ 12y agoit does because their is more particle movement which in turn creas a higher pitched sound
Wiki User
∙ 11y agoSound is the vibration of air molecules. The higher the pitch, the faster the vibration. The stronger the vibration, the louder the sound.
Wiki User
∙ 11y agoYes, the higher the frequency, the higher the pitch. The lower the frequency, the lower the pitch.
Wiki User
∙ 12y agoNo. High pitch means higher frequency.
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pitch
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