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分析了相位调制型音频光电检测方法的可行性,对四步移相法测量声音的光电转换方法进行了计算与分析。结果表明,该种光电检测方法在声音的光电检测应用过程中,振动膜片和探测器位置定位的选择对检测精度起着决定性的作用。该环节直接影响整个检测系统的声音频谱范围和动态范围。
The feasibility of phase-modulated audio photoelectric detection method was analyzed. The photoelectric conversion method of four-step phase-shifted method was calculated and analyzed. The results show that the optoelectronic detection method in the sound of the photoelectric detection process, the vibration diaphragm and the location of the detector positioning accuracy plays a decisive role. This link directly affects the entire detection system of sound spectrum and dynamic range.