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device and method for additive synthesis of digital audio signals using a recursive digital oscillator
device and method for additive synthesis of digital audio signals using a recursive digital oscillator
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机译:递归数字振荡器用于数字音频信号加法合成的设备和方法
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摘要
A method of performing additive synthesis of digital audio signals using a novel recursive digital oscillator includes the step of receiving digital audio signal frames wherein each digital audio siganl frame includes a set of frequency, amplitude, and phase components represented as coefficients of variables in a mathematical expression. Each digital audio signal frame thereby includes a frequency coefficient representation. Converted frequency coefficients (32) are formed by linearly re-mapping the bits of the frequency coefficient representation and adding range extension via a shift amount in order to bias audio reproduction accuracy toward low frequency signals. Additive synthesis (34) is then performed with the converted frequency coefficients.
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