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根据量化误差均方值最小准则,假定语声信号的幅度概率密度为Gamma分布函数和Laplace分布函数,分别计算出相应的最佳非均匀量化特性和最佳均匀量化特性。
According to the minimum mean square error of quantization error, we assume that the amplitude probability density of speech signal is Gamma distribution function and Laplace distribution function, and calculate the best non-uniform quantization characteristic and the best uniform quantization characteristic respectively.