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METHOD FOR DETERMINING VARIABLE LENGTH OF FRAME FOR PREPROCESSING OF A SPEECH SIGNAL AND METHOD AND APPARATUS FOR PREPROCESSING A SPEECH SIGNAL USING THE SAME
METHOD FOR DETERMINING VARIABLE LENGTH OF FRAME FOR PREPROCESSING OF A SPEECH SIGNAL AND METHOD AND APPARATUS FOR PREPROCESSING A SPEECH SIGNAL USING THE SAME
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机译:确定用于预处理语音信号的帧的可变长度的方法以及使用该方法预处理语音信号的方法和装置
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摘要
Disclosed are a device and a method of determining a variable-length frame for speech signal preprocessing, which can improve performance of speech signal processing during a speech signal preprocessing procedure, and a speech signal preprocessing method and device using such a preprocessing method. The preprocessing method includes the steps of converting the input speech signal into a digital speech signal, varying a frame length of the speech signal and simultaneously calculating an LPC residual error from frame length to frame length, and determining a length of the current frame by taking a frame length at which the LPC residual error is minimal. The speech signal preprocessing method and device use the processing method uses a variable-length frame. These methods and device can extract a more accurate feature vector, thereby preventing lower recognition in performance during speech signal processing.
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