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/hal_st-2.7.6/audio/microphone/
DOpenPDMFilter.c37 uint32_t div_const = 0; variable
196 div_const = sub_const * Param->MaxVolume / 32768 / FILTER_GAIN; in Open_PDM_Filter_Init()
197 div_const = (div_const == 0 ? 1 : div_const); in Open_PDM_Filter_Init()
255 Z = RoundDiv(Z, div_const); in Open_PDM_Filter_64()
303 Z = RoundDiv(Z, div_const); in Open_PDM_Filter_128()