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Audio: MFCC: Use 32 bit FFT and Mel frequency scale filters for better precision #10750

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Audio: MFCC: Use 32 bit FFT and Mel frequency scale filters for better precision #10750

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7b6819a
Audio: MFCC: Improve generic s16 source and sink copy functions
singalsu Apr 28, 2026
35a495b
Audio: MFCC: Remove unnecessary data copy HiFi3/4 code
singalsu Apr 28, 2026
0d11acb
Audio: MFCC: Add S24 and S32 format support
singalsu Apr 27, 2026
c34bc3f
Audio: MFCC: Improve check for input channel select
singalsu May 4, 2026
f824b6d
Audio: MFCC: Add Mel log spectra output mode when num_ceps is zero
singalsu Apr 24, 2026
61135a0
Audio: MFCC: Allow output data to span over single period
singalsu Apr 30, 2026
b676a20
Audio: MFCC: Update user/mfcc.h comment
singalsu Apr 30, 2026
9573b62
Audio: MFCC: Add setup of Hann window
singalsu Apr 30, 2026
9493837
Audio: MFCC: Add dynamic mmax tracking and configurable mel scaling
singalsu Apr 30, 2026
5d66805
Audio: MFCC: Update setup_mfcc.m blob export script
singalsu Apr 29, 2026
74f05f5
Tools: Topology: Build test topologies for Mel output mode of MFCC
singalsu May 4, 2026
2864da9
Audio: MFCC: Update example run script run_mfcc.sh
singalsu Apr 28, 2026
c051aa0
Math: Auditory: Change Mel filterbank 32-bit output to int32 Q9.23
singalsu May 6, 2026
2eaa342
Audio: MFCC: Fix HiFi s24 format input data sign extension
singalsu May 6, 2026
fcd37a6
Audio: MFCC: Remove dead code in HiFi3/4 mfcc_apply_window 32-bit path
singalsu May 6, 2026
80e1991
Audio: MFCC: Use 32-bit FFT and Q9.23 Mel output in MFCC pipeline
singalsu May 6, 2026
8aac15d
Audio: MFCC: Fix FFT buffer fill for both 16 and 32-bit modes
singalsu May 6, 2026
4c1bda3
Audio: MFCC: Fix 32 bit mode HiFi3/4 window multiply
singalsu May 7, 2026
52fa825
Audio: MFCC: Fix error handling in mfcc_setup
singalsu May 7, 2026
98e88c7
Audio: MFCC: Refactor run_mfcc.sh and add decode_all.m
singalsu May 7, 2026
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2 changes: 1 addition & 1 deletion scripts/rebuild-testbench.sh
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Expand Up @@ -97,7 +97,7 @@ export_xtensa_setup()
cat <<EOFSETUP > "$export_script"
export XTENSA_TOOLS_ROOT=$XTENSA_TOOLS_ROOT
export XTENSA_CORE=$XTENSA_CORE
XTENSA_PATH=$tools_bin
export XTENSA_PATH=$tools_bin
EOFSETUP
}

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2 changes: 1 addition & 1 deletion src/audio/mfcc/Kconfig
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Expand Up @@ -4,7 +4,7 @@ config COMP_MFCC
tristate "MFCC component"
depends on COMP_MODULE_ADAPTER
select CORDIC_FIXED
select MATH_16BIT_MEL_FILTERBANK
select MATH_32BIT_MEL_FILTERBANK
select MATH_AUDITORY
select MATH_DCT
select MATH_DECIBELS
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6 changes: 3 additions & 3 deletions src/audio/mfcc/mfcc.c
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Expand Up @@ -38,13 +38,13 @@ SOF_DEFINE_REG_UUID(mfcc);

__cold_rodata const struct mfcc_func_map mfcc_fm[] = {
#if CONFIG_FORMAT_S16LE
{SOF_IPC_FRAME_S16_LE, mfcc_s16_default},
{SOF_IPC_FRAME_S16_LE, mfcc_s16_default},
#endif /* CONFIG_FORMAT_S16LE */
#if CONFIG_FORMAT_S24LE
{SOF_IPC_FRAME_S24_4LE, NULL},
{SOF_IPC_FRAME_S24_4LE, mfcc_s24_default},
#endif /* CONFIG_FORMAT_S24LE */
#if CONFIG_FORMAT_S32LE
{SOF_IPC_FRAME_S32_LE, NULL},
{SOF_IPC_FRAME_S32_LE, mfcc_s32_default},
#endif /* CONFIG_FORMAT_S32LE */
};

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