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Parametric Audio Coding Based Wavetable Synthesis

For mobile applications memory and computational complexity requirements are very strict. Therefore, traditional wavetable/FM synthesis methods have to compromise between the number and the quality of instruments in the soundbank. This paper presents a wavetable synthesizer employing a parametric representation of the soundbank samples, sharing the advantages of both wavetable and parametric synthesis methods. The soundbank is compact and thus easy to store and transmit, and the sound quality can match that of traditional wavetable synthesis. Moreover, post-processing of samples in a parametric representation ? such as pitch change, filtering and envelope ? can be performed directly in the parametric domain, effectively reducing synthesizer complexity.

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