- CONFIG_INTEL_DMIC_FIR_DECIMATE_BY_4¶
FIR decimate by 4
Type: bool
Help¶
This includes FIR coefficients to decimate by 4 into the build.
Decimation by 4 in FIR is useful in some cases with high microphone
clock rates due to max. decimation factor limit of CIC. In such
cases decimation by 2 may not be usable.
Direct dependencies¶
INTEL_DMIC && SOF
(Includes any dependencies from ifs and menus.)
Default¶
n
Symbols that select this symbol¶
Kconfig definition¶
At /home/nashif/zephyrproject/modules/audio/sof/zephyr/../src/drivers/intel/Kconfig:114
Included via Kconfig:8 → Kconfig.zephyr:23 → modules/Kconfig:6 → doc/_build/Kconfig/Kconfig.modules:14 → /home/nashif/zephyrproject/modules/audio/sof/zephyr/Kconfig:2 → /home/nashif/zephyrproject/modules/audio/sof/zephyr/../Kconfig.sof:124 → /home/nashif/zephyrproject/modules/audio/sof/zephyr/../src/Kconfig:7 → /home/nashif/zephyrproject/modules/audio/sof/zephyr/../src/drivers/Kconfig:5
Menu path: (Top) → Modules → sof (/home/nashif/zephyrproject/modules/audio/sof) → Drivers → Intel DMIC driver → Decimation factors
config INTEL_DMIC_FIR_DECIMATE_BY_4
bool "FIR decimate by 4" if INTEL_DMIC_FIR_CUSTOM
default n
depends on INTEL_DMIC && SOF
help
This includes FIR coefficients to decimate by 4 into the build.
Decimation by 4 in FIR is useful in some cases with high microphone
clock rates due to max. decimation factor limit of CIC. In such
cases decimation by 2 may not be usable.
(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)