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Others technique - by Fuhr
glass tube (D=1,5mm) with rubber insertion.
Sounding is registered by a microphone and
is investigated with the program
Cool Edit Pro, Sound Forge ...etc. |
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It is necessary to moisten fingers with water. |
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viola |
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( Program Cool Edit.. ) |
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( Prgram Sound Forge ) |
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The knock by a finger in the back plate and its spectrum analysis. It is necessary to exclude the beginning of a signal ( this site (zone) contains nonlinearity and transients) |
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Site (zone) of the free fading fluctuations |
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violin |
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Sound its violin |
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Main wood or (A1+B1)/2 = 432 Hz |
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- the violin over a speaker |
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(1) 16bit, 16,000Hz, 50Kb, mono |
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(2) 16bit, 16,000Hz, 24Kb, mono |
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(3) 16bit, 16,000Hz, 27Kb, mono |
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Sound other my violin |
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B1- = 445 Hz |
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(4) 16bit, 16,000Hz, 32Kb, mono |
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(5) 16bit, 11.000Hz, 70Kb, mono |
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Here you also can hear sounding of my violin |
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By Fuhr ( some part of tuning) |
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Sound B1 ( Main wood..... (?) ) |
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If you do vibration through a glass (by Fuhr), in this case it is important to have
a pure (near to a sinusoid) and strong tone of some height...
At first I apply a part of a tube with a rubber insertion.
The frequencies of adjacent sites should be little differ (probably in limits of a halftone...)
At test by Fuhr by a part of a tube without a rubber insertion, you receive (will have) other tone.
Smaller site in this case vibrates. In the sounding of a violin these frequencies can be useful in selection of high-frequency formants (~2000 - 3500 Hz....)
Here we have a big field for creativity. |
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Sound its violin (16 bit 25kHz mono 80 Kb) |
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B1 |
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For example programm Wave Lab...
Sounding G... and its spectrum analisis. |
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Sound G... 16000bit mono |
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And its spectrum analisis
( program Sound Forge... ) |
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Sound G-D-A-E 16000bit mono |
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Next |
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