output_samples_number 指定每次调用PDM_Filter()函数时要 生成的PCM样本数量 mic_gain 指定麦克风增益(以dB为单位) 备注 PDM_FILTER_DEC_FACTOR_16 (0x0005) PDM_FILTER_DEC_FACTOR_24 (0x0006) PDM_FILTER_DEC_FACTOR_32 (0x0007) PDM_FILTER_DEC_FACTOR_48 (0x0001) PDM_FIL...
PDM_FILTER_DEC_FACTOR_16 (0x0005) PDM_FILTER_DEC_FACTOR_24 (0x0006) PDM_FILTER_DEC_FACTOR_32 (0x0007) PDM_FILTER_DEC_FACTOR_48 (0x0001) PDM_FILTER_DEC_FACTOR_64 (0x0002) PDM_FILTER_DEC_FACTOR_80 (0x0003) PDM_FILTER_DEC_FACTOR_128 (0x0004) Specifies the number of PCM samples to...
[0] 0V ~ 10(5)V [1] -10V ~ +10V :电压的极性由运行方向决定 [2] 4 ~ 20mA [3] 0 ~ 20mA P06.04 Analog Input 1 Filter Time Constant 设定模拟量输入端子(AI.1)输入的模拟量指令值的过滤时间. P06.05 Analog Input 1 Offset adjustment 设定模拟量输入端子(AI.1)输入的模拟量指令值的OFFSET...
PDM frequency = Audio sampling frequency × decimation factor The decimation factor is generally in the range of 48 to 128. The decimation stage is preceded by a low-pass filter to avoid distortion from aliasing. 1.5 1.5.1 1.5.2 Acoustic parameters Sensitivity The ...
PDM frequency = Audio sampling frequency × decimation factor The decimation factor is generally in the range of 48 to 128. The decimation stage is preceded by a low-pass filter to avoid distortion from aliasing. 1.5 1.5.1 1.5.2 Acoustic parameters Sensitivity The sen...