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

/hal_st-2.7.6/audio/microphone/
DOpenPDMFilter.c124 uint8_t decimation = param->Decimation; in filter_table() local
127 for (i = 0; i < decimation; i += 8) { in filter_table()
169 uint8_t decimation = Param->Decimation; in Open_PDM_Filter_Init() local
175 for (i = 0; i < decimation; i++) { in Open_PDM_Filter_Init()
183 Param->FilterLen = decimation * SINCN; in Open_PDM_Filter_Init()
185 sinc[decimation * SINCN - 1] = 0; in Open_PDM_Filter_Init()
186 convolve(sinc1, decimation, sinc1, decimation, sinc2); in Open_PDM_Filter_Init()
187 convolve(sinc2, decimation * 2 - 1, sinc1, decimation, &sinc[1]); in Open_PDM_Filter_Init()
189 for (i = 0; i < decimation; i++) { in Open_PDM_Filter_Init()
190 coef[j][i] = sinc[j * decimation + i]; in Open_PDM_Filter_Init()
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DREADME18 decimation.