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SPEECH PROCESSING SYSTEM AND METHOD, AND SPEECH FRAME ESTIMATING METHOD FOR REDUCING COMPLEXITY AND IMPROVING SPEECH QUALITY
SPEECH PROCESSING SYSTEM AND METHOD, AND SPEECH FRAME ESTIMATING METHOD FOR REDUCING COMPLEXITY AND IMPROVING SPEECH QUALITY
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机译:降低复杂度并提高语音质量的语音处理系统和方法以及语音帧估计方法
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摘要
PURPOSE: A speech processing system and method, and a speech frame estimating method are provided to reduce complexity and improve speech quality by optimizing a frame size. CONSTITUTION: A speech processing system includes a frame processing unit(100), a short-term analyzer(200), a short-term redundancy removing unit(250), a long-term analyzer(300), a long-term redundancy removing unit(350), and an excitation pulse search unit(500). The frame processing unit segments an input speech signal into frames and sub-frames. The short-term analyzer calculates a frame representing short-term characteristic of the input speech signal. The short-term redundancy removing unit removes the frame representing the short-term characteristic of the input speech signal and generates a noise shaped speech signal. The long-term analyzer calculates the noise shaped speech signal representing long-term characteristic. The long-term redundancy removing unit removes the noise shaped speech signal representing the long-term characteristic or frames representing the short-term and long-term characteristics of the input speech signal and generates a target vector. The excitation pulse search unit generates a pulse sequence for simulating the target vector.
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