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Searched refs:HP_ALFA (Results 1 – 2 of 2) sorted by relevance

/hal_st-3.7.0/audio/microphone/
DOpenPDMFilter.c181 …Param->HP_ALFA = (Param->HP_HZ != 0 ? (uint16_t) (Param->Fs * 256 / (2 * 3.14159f * Param->HP_HZ +… in Open_PDM_Filter_Init()
250 OldOut = (Param->HP_ALFA * (OldOut + Z - OldIn)) >> 8; in Open_PDM_Filter_64()
298 OldOut = (Param->HP_ALFA * (OldOut + Z - OldIn)) >> 8; in Open_PDM_Filter_128()
DOpenPDMFilter.h80 uint16_t HP_ALFA; member