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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Re: Your informants are mistaken… posted by Romy on July 29, 2002 at 20:55:00:
41.2 Hz is the lowest frequency at which a string of that length and weight vibrates. The vibration pattern producing that frequency has fixed points at the bridge and nut (the point where the string is anchored at the top of the neck) and the point of maximum amplitude is at the midpoint of the string.The string also vibrates at frequencies which are harmonically related to that full length vibration. They occur at whole number multiples of the fundamental frequency - twice, three times, four times, five times, etc - and are related to vibration patterns of half, one third, one quarter, one fifth etc of the whole string length.
The string vibrations are transmitted to the sounding board, the top of the instrument's body, via the bridge and the bulk of the sound that people hear comes from the vibration of the sound board which is a mechanical amplifier for the sound of the vibrating string. The volume of a string vibrating on its own is not very loud and the vibration has to be transferred to something else which will vibrate and project the sound more efficiently.
The body of the instrument will have it's own natural resonant frequency which may or may not be the same as the note being played. Actually, the resonant pattern of the body of the instrument can be quite complex with the back, sides, top or sound board, and neck all having different resonant frequencies which you can hear by tapping them.
David Aiken
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Follow Ups
- Re: Your informants are mistaken… - David Aiken 01:51:30 07/30/02 (2)
- Re: Your informants are mistaken… - TOOL 04:39:26 07/30/02 (1)
- Yes but let's not go there… - David Aiken 14:56:01 07/30/02 (0)
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