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    • 2. 发明授权
    • Speech detection apparatus not affected by input energy or background
noise levels
    • 语音检测设备不受输入能量或背景噪声水平的影响
    • US5293588A
    • 1994-03-08
    • US682079
    • 1991-04-09
    • Hideki SatohTsuneo Nitta
    • Hideki SatohTsuneo Nitta
    • G10L25/78G10L9/00
    • G10L25/78
    • A speech detection apparatus capable of reliably detecting speech segments in audio signals regardless of the levels of input audio signals and background noises. In the apparatus, a parameter of input audio signals is calculated frame by frame, and then compared with a threshold in order to judge each input frame as one of a speech segment and a noise segment, while the parameters of the input frames judged as the noise segments are stored in the buffer and the threshold is updated according to the parameters stored in the buffer. The apparatus may utilize a transformed parameter obtained from the parameter, in which the difference between speech and noise is emphasized, and noise standard patterns are constructed from the parameters of the input frames pre-estimated as noise segments.
    • 一种能够可靠地检测音频信号中的语音段的语音检测装置,而不管输入音频信号的电平和背景噪声如何。 在装置中,逐帧地计算输入音频信号的参数,然后与阈值进行比较,以便将每个输入帧判断为语音段和噪声段之一,而将输入帧的参数判断为 噪声段被存储在缓冲器中,并且根据存储在缓冲器中的参数来更新阈值。 该装置可以利用从参数获得的变换参数,其中强调语音和噪声之间的差异,并且根据预估为噪声段的输入帧的参数构建噪声标准模式。