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Multipulse processing with freedom given to multipulse positions of a speech signal
Multipulse processing with freedom given to multipulse positions of a speech signal
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机译:赋予语音信号多脉冲位置自由度的多脉冲处理
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摘要
In a multipulse processing device for achieving a high encoding efficiency without using a high sampling frequency for an input signal and with a great degree of freedom given to positions of multipulses, an input speech signal is subjected by an LPC analyzer/processor 3 to LPC analysis of each analysis frame for extraction of LPC coefficients after sampled by an A/D converter 2. Multipulses are retrieved as a result of decision by a multipulse analyzer 20 with a degree of freedom given relative to sampling points of a sampled speech signal supplied through an auditorily weighting filter 4. Encoded by an encoder 41 and together with k parameters used as an example of the LPC coefficients, retrieved multipulses are multiplexed by a multiplexer 42 for delivery to a synthesis side. A multipulse waveform synthesizer 45 synthesizes a waveform by using decoded multipulse data and the LPC coefficients.
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机译:在不对输入信号使用高采样频率并且对多脉冲的位置赋予很大自由度而实现高编码效率的多脉冲处理装置中,通过LPC分析器/处理器3对输入语音信号进行LPC分析。 A / D转换器2采样后,提取每个分析帧的LPC系数。多脉冲作为多脉冲分析器20的决策结果而检索,相对于通过A / D转换器提供的采样语音信号的采样点给出的自由度听觉加权滤波器4。由编码器41编码,并且与用作LPC系数的示例的k个参数一起,由多路复用器42对检索到的多脉冲进行多路复用,以传送至合成侧。多脉冲波形合成器45通过使用解码的多脉冲数据和LPC系数来合成波形。
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