THESIS
2001
xi, 59 leaves : ill. ; 30 cm
Abstract
The spectral properties of the Chinese Qin, China’s oldest stringed instrument with a history of around 3000 years, are considered. Qin tones consist of a short fast attack and a long smooth decay, while a large amplitude and frequency modulation appear in the attack. Additive synthesis is the simplest and purest synthesis technique of modeling based on the summation of sine waves. However, this technique requires a large number of oscillators and huge amount of data to adequately synthesize the tone. Three methods of data reduction, the skip factor approach, the Douglas-Puecker line simplification algorithm and Lang’s line generalization algorithm, with the hybrid approach were introduced, with a 96% data reduction. A CSound implementation for synthesizing the Chinese Qin tones has bee...[
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The spectral properties of the Chinese Qin, China’s oldest stringed instrument with a history of around 3000 years, are considered. Qin tones consist of a short fast attack and a long smooth decay, while a large amplitude and frequency modulation appear in the attack. Additive synthesis is the simplest and purest synthesis technique of modeling based on the summation of sine waves. However, this technique requires a large number of oscillators and huge amount of data to adequately synthesize the tone. Three methods of data reduction, the skip factor approach, the Douglas-Puecker line simplification algorithm and Lang’s line generalization algorithm, with the hybrid approach were introduced, with a 96% data reduction. A CSound implementation for synthesizing the Chinese Qin tones has been developed. Listening tests show that the model produces tones that are perceptually indistinguishable from the original ones.
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