【摘要】 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。更多还原

【Abstract】 It is analyzed that the possibility of sound photoelectricity-inspect by phase modulating.It is calculated and analyzed that the 4-Frame Phase Shifting using in sound photoelectricity-inspect.It is verified that vibrator film and the position of exploring instrument determines inspecting precision.This step directly influences sound frequency spectrum and dynamic range.A kind of vibrator film choosing reference gist is brought up.更多还原