首页>
外国专利>
Speech Coding by Quantizing with Random-Noise Signal
Speech Coding by Quantizing with Random-Noise Signal
展开▼
机译:通过随机噪声信号量化进行语音编码
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method, system and program for encoding and/or decoding a speech signal. The method comprises: generating a first signal representing a property of an input speech signal; transforming the first signal using a simulated random-noise signal, thus producing a second signal; quantizing the second signal based on a plurality of discrete representation levels, thus generating quantization values for transmission in an encoded speech signal, and also generating a third signal being a quantized version of the second signal; and performing an inverse of the transformation on the third signal, thus generating a quantized output signal, wherein the generation of the first signal is based on feedback of the quantized output signal. The method further comprises controlling the transformation in dependence on a property of the first signal so as to vary the magnitude of a noise effect created by the transformation relative to the representation levels.
展开▼