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/hal_st-2.7.6/audio/microphone/
DOpenPDMFilter.c125 uint8_t channels = param->In_MicChannels; in filter_table() local
137 data_index += channels; in filter_table()
222 uint8_t channels = Param->In_MicChannels; in Open_PDM_Filter_64() local
223 uint8_t data_inc = ((DECIMATION_MAX >> 4) * channels); in Open_PDM_Filter_64()
232 uint8_t j = channels - 1; in Open_PDM_Filter_64()
235 for (i = 0, data_out_index = 0; i < Param->Fs / 1000; i++, data_out_index += channels) { in Open_PDM_Filter_64()
270 uint8_t channels = Param->In_MicChannels; in Open_PDM_Filter_128() local
271 uint8_t data_inc = ((DECIMATION_MAX >> 3) * channels); in Open_PDM_Filter_128()
280 uint8_t j = channels - 1; in Open_PDM_Filter_128()
283 for (i = 0, data_out_index = 0; i < Param->Fs / 1000; i++, data_out_index += channels) { in Open_PDM_Filter_128()