超声多普勒音频信号
Doppler ultrasound signals
特殊信号音信号
Special-Information Tone Signal SSI
多频信号
multiple frequency signal
multifrequency signal
multi-frequency signal
Multi frequency signals
Multi-freqency signal
reverberation
伪随机多频信号
pseudo-random multi-frequency signal
视/音频信号传输
audio and video signal transmission
数字音频信号处理
digital audio signal processing