The system can issue a pure tone, tone twitter, narrowband noise and natural sound of the voice signal, and can adjust the loudness and frequency of the signals with some accuracy.
该系统能发出纯音、啭音、窄带噪声和自然声等声音信号，并可对信号进行一定精度的响度和频率调节。
Methods the noise on high frequency domain was obtained and magnified after the pathologic voice signal was decomposed on multiple levels by means of the wavelet transform.
方法应用小波变换对早期病理嗓音信号进行多重分解，提取和放大频谱的高端噪声。
Results the relative signal-to-noise ratio of the pathologic voice on high frequency differed significantly from that of the normal voice.
结果病态嗓音和正常嗓音的频谱高端相对信噪比存在显著差异。
The speech is sparse in time-frequency domain, so the energy of voice signal only concentrates on some narrow frequency, and the energy of voice sources are not overlap each other.
由于语音信号是时频稀疏的，语音信号的能量主要集中在某些窄带上，且各语音源的能量集中区域不交迭。
Results the relative signal-to-noise ratio of the pathologic voice on high frequency differed significantly from that of then...
结果病态嗓音和正常嗓音的频谱高端相对信噪比存在显著差异。
Results the relative signal-to-noise ratio of the pathologic voice on high frequency differed significantly from that of then...
结果病态嗓音和正常嗓音的频谱高端相对信噪比存在显著差异。
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