哪些参数会影响SNR？哪种评估SNR最好？

该参数包括MEMS元件的噪声和ASIC。关于这个总和，MEMS传感器给出了对噪声的主要贡献，可以认为集成电路的贡献可以忽略不计。
根据其定义，SNR是灵敏度和残余噪声之间的比率。因此，给定灵敏度，评估这样的参数基本上测量残余噪声水平。通过测量消声环境中的噪声和对采集进行A加权来实现该目标。由于复制完美静音环境的复杂性，SNR是评估麦克风规格中最关键的参数，因此密封麦克风声音入口（即用胶带）将是有帮助的。
 亚历山德罗
 
 
naue_b
 
2014年1月16日，星期四，下午5:17
哪些参数会影响SNR？哪种评估SNR最好？



以下为原文






This parameter includes both the noise of the MEMS element and the ASIC. Concerning this sum, the main contribution to noise is given by the MEMS sensor, the integrated circuit contribution can be considered negligible.


As per its definition, the SNR is the ratio between the sensitivity and the residual noise. Hence, given the sensitivity, such parameter is evaluated measuring basically the residual noise level. The goal is achieved by measuring the noise in an  anechoic environment and A-weighting the acquisition. The SNR is the most critical parameter to evaluate among the microphone specifications due to the complexity in reproducing a perfect silent environment, hence it would be helpful to seal the microphone sound inlet (i.e with a tape).
              Alessandro


naue_b

Thursday, January 16, 2014 5:17 PM
Which are the parameters that impact on SNR? Which is the best way to evaluate the SNR?