Wavelet Transform in Signal Processing of Acoustical Signals

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Wavelet Transform in Signal Processing of Acoustical Signals

Popis výsledku v původním jazyce

Many researchers have tried to characterise the sound quality of violins by objective quality parameters. An experimental method described here is very similar to the technique of violin playing termed "pizzicato". A violin is placed horizontally on twosupports with its string down. Small mass hangs from its string in a standard playing position. After releasing, the transient response is picked up by a Brüel&Kjar 4374 accelerometer placed on the back plate opposite to the bridge. For the first set ofmeasurements a measuring card ADSP2115 was used for recording signals; for the second set of measurement's a Brüel&Kjar 2825 PULSE. A number of tests proved the reproducibility of excitation end measurement. Several violins of different quality were measured. Data were processed in a system MATLAB. STFT and Wavelet Transform were used for calculation of frequency spectrum and wavelet map. Characteristics which could be important for a tonal quality of a violin have also been noted.

Název v anglickém jazyce

Wavelet Transform in Signal Processing of Acoustical Signals

Popis výsledku anglicky

Many researchers have tried to characterise the sound quality of violins by objective quality parameters. An experimental method described here is very similar to the technique of violin playing termed "pizzicato". A violin is placed horizontally on twosupports with its string down. Small mass hangs from its string in a standard playing position. After releasing, the transient response is picked up by a Brüel&Kjar 4374 accelerometer placed on the back plate opposite to the bridge. For the first set ofmeasurements a measuring card ADSP2115 was used for recording signals; for the second set of measurement's a Brüel&Kjar 2825 PULSE. A number of tests proved the reproducibility of excitation end measurement. Several violins of different quality were measured. Data were processed in a system MATLAB. STFT and Wavelet Transform were used for calculation of frequency spectrum and wavelet map. Characteristics which could be important for a tonal quality of a violin have also been noted.

Druh

D - Stať ve sborníku

CEP obor

BI - Akustika a kmity

OECD FORD obor

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Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of 32nd International Acoustical Conference

ISBN

80-228-1159-9

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

TU Zvolen

Místo vydání

Zvolen

Místo konání akce

Banská Štiavnica

Datum konání akce

10. 9. 2002

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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