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    Spectral sound analysis and sound board optimization of traditional musical instrument Qanun
    (2018) Yılmaz, Serdar; Belenli, İbrahim; Kurtaslan, Zafer
    The present study was on the sound of a traditional instrument Qanun and investigated the effects of soundboards of different thickness on tone characteristics. Changes in sound level were observed. The acoustic envelopes contained three regions were drawn for all of pitches. The changes in the sound levels were studied on this graphic. Fourier Analysis was made on recordings. Frequency distribution curves were also drawn. Fundamental and overtone level distributions were shown on these graphics. The levels of harmonics were compared to fundamental level on these graphics. The structures of upper partial tones were studied. Frequency ranges of the graphics were limited to 100-10000 Hz. The numeric values on the all of graphics were analysed; and the differences between all overtones were noted. A typical sound level curve for the Qanun was shown. In 3.0 mm thickness, due to the irregular resonances resulting from the thin body, too many harmonics and long decay periods were observed. In higher thicknesses, the Qanun cannot show its unique timbre due the dimness and scarcity of harmonics. Because of the evaluation of graphics and numeric values, a 3.5 mm thick soundboard was suggested as the most appropriate soundboard. The findings obtained in the present study are valid for the standard structure that is commonly used. However, these findings can be guiding for qanuns of different structures.
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    Öğe
    SPECTRAL SOUND ANALYSIS AND SOUND BOARD OPTIMIZATION OF TRADITIONAL MUSICAL INSTRUMENT QANUN *
    (2018) Yilmaz, Serdar; Belenli, Ibrahim; Kurtaslan, Zafer
    The present study was on the sound of a traditional instrumentQanun and investigated the effects of soundboards of different thicknesson tone characteristics. Changes in sound level were observed. Theacoustic envelopes contained three regions were drawn for all of pitches.The changes in the sound levels were studied on this graphic. FourierAnalysis was made on recordings. Frequency distribution curves werealso drawn. Fundamental and overtone level distributions were shownon these graphics. The levels of harmonics were compared tofundamental level on these graphics. The structures of upper partialtones were studied. Frequency ranges of the graphics were limited to 100-10000 Hz. The numeric values on the all of graphics were analysed; andthe differences between all overtones were noted. A typical sound levelcurve for the Qanun was shown. In 3.0 mm thickness, due to theirregular resonances resulting from the thin body, too many harmonicsand long decay periods were observed. In higher thicknesses, the Qanuncannot show its unique timbre due the dimness and scarcity ofharmonics. Because of the evaluation of graphics and numeric values, a3.5 mm thick soundboard was suggested as the most appropriatesoundboard. The findings obtained in the present study are valid for thestandard structure that is commonly used. However, these findings canbe guiding for qanuns of different structures.