声频频谱记录仪
sonic frequency spectrum recording meter
声频频谱仪
audio-frequency spectrometer
不失真声频压缩
lossless audio compression
不失真预测声频压缩
lossless predictive audio compression
传声器声压频率响应
pressure frequency response of microphone
目标/背景/噪声频谱特性
Target
background and noise frequency character
声频频率计
sonic frequency cymometer
声频谱仪
audio frequency spectrometer
声频压缩扩展器
audio compressor-expander
声压谱
Spectra of sound pressure