audio: tensorflow: keyword detect

app/boards/intel_adsp_ace15_mtpm.conf

@@ -17,6 +17,11 @@ CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_SAMPLE_KEYPHRASE=y
 CONFIG_COMP_PHASE_VOCODER=y
 CONFIG_COMP_STFT_PROCESS=y
+CONFIG_SOF_STAGING=y
+CONFIG_CPP=y
+CONFIG_STD_CPP17=y
+CONFIG_COMP_TENSORFLOW=m
+CONFIG_STACK_SIZE_EDF=32768
 
 # SOF / audio modules / mocks
 # This mock is part of official sof-bin releases because the CI that
@@ -52,7 +57,7 @@ CONFIG_SOF_LOG_LEVEL_INF=y
 CONFIG_DEBUG_COREDUMP=y
 CONFIG_DEBUG_COREDUMP_BACKEND_INTEL_ADSP_MEM_WINDOW=y
 CONFIG_DEBUG_COREDUMP_MEMORY_DUMP_MIN=y
-CONFIG_HEAP_MEM_POOL_SIZE=8192
+CONFIG_HEAP_MEM_POOL_SIZE=32768
 CONFIG_LLEXT=y
 CONFIG_LLEXT_STORAGE_WRITABLE=y
 CONFIG_LLEXT_EXPERIMENTAL=y

app/boards/intel_adsp_ace30_ptl.conf

@@ -12,9 +12,24 @@ CONFIG_FORMAT_CONVERT_HIFI3=n
 # SOF / audio modules / mocks
 # This mock is part of official sof-bin releases because the CI that
 # tests it can't use extra CONFIGs. See #9410, #8722 and #9386
-CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=m
+CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=n
 CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
-CONFIG_COMP_STFT_PROCESS=y
+CONFIG_COMP_STFT_PROCESS=n
+CONFIG_SOF_STAGING=y
+CONFIG_COMP_KPB=y
+CONFIG_CPP=y
+CONFIG_STD_CPP17=y
+# tflmcly (stock keyword model) is not yet GNU-toolchain-clean on aphid
+# (undefined sof_ut_log/__assert_no_args/abs); not required by mww, which
+# builds its own independent TFLM lib copy. Disabled here to unblock the
+# aphid mww LLEXT build.
+CONFIG_COMP_TENSORFLOW=n
+CONFIG_COMP_MFCC=y
+CONFIG_COMP_MWW=y
+CONFIG_AMS=n
+CONFIG_STACK_SIZE_EDF=32768
+CONFIG_COMP_VOLUME=y
+CONFIG_COMP_GAIN=y
 
 # SOF / infrastructure
 CONFIG_KCPS_DYNAMIC_CLOCK_CONTROL=n
@@ -29,20 +44,28 @@ CONFIG_COLD_STORE_EXECUTE_DRAM=y
 CONFIG_INTEL_MODULES=y
 CONFIG_LIBRARY_AUTH_SUPPORT=y
 CONFIG_LIBRARY_MANAGER=y
-CONFIG_LIBRARY_BASE_ADDRESS=0xa0688000
-CONFIG_LIBRARY_BUILD_LIB=y
-CONFIG_LIBRARY_DEFAULT_MODULAR=y
+CONFIG_LIBRARY_BASE_ADDRESS=0xa0700000
+CONFIG_LIBRARY_BUILD_LIB=n
+CONFIG_LIBRARY_DEFAULT_MODULAR=n
 
 # SOF / logging
 CONFIG_SOF_LOG_LEVEL_INF=y
 
 # Zephyr / OS features
 CONFIG_COUNTER=y
-CONFIG_HEAP_MEM_POOL_SIZE=8192
+CONFIG_HEAP_MEM_POOL_SIZE=32768
+CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=32768
 CONFIG_LLEXT=y
 CONFIG_LLEXT_STORAGE_WRITABLE=y
 CONFIG_LLEXT_EXPERIMENTAL=y
 CONFIG_LLEXT_EDK=n
+
+# Default LLEXT metadata heap (CONFIG_LLEXT_HEAP_SIZE, 8 KB) is sized for
+# small extensions with few STB_GLOBAL-only exported symbols. mww.llext
+# links in TFLM, whose template-instantiated vtables/typeinfo are emitted
+# STB_WEAK -- now included in ext->sym_tab after the llext_load.c fix -- and
+# blows past 8 KB (Failed to allocate extension symbol table, ret -12).
+CONFIG_LLEXT_HEAP_SIZE=256
 CONFIG_MODULES=y
 
 # Zephyr / device drivers
@@ -78,3 +101,8 @@ CONFIG_SOF_USERSPACE_PROXY=y
 CONFIG_MAX_THREAD_BYTES=3
 
 CONFIG_MAX_DOMAIN_PARTITIONS=32
+
+# Debug: get faulting virtual address for openmodules-load panic
+CONFIG_XTENSA_ADSP_FATAL_BREADCRUMB_DATA_VADDR=y
+CONFIG_SYS_HEAP_RUNTIME_STATS=y
+CONFIG_SOF_ZEPHYR_HEAP_SIZE=0x80000

app/boards/intel_adsp_cavs25.conf

@@ -12,6 +12,14 @@ CONFIG_COMP_MFCC=y
 CONFIG_COMP_MULTIBAND_DRC=y
 CONFIG_COMP_VOLUME_WINDOWS_FADE=y
 CONFIG_FORMAT_CONVERT_HIFI3=n
+CONFIG_SOF_STAGING=y
+CONFIG_CPP=y
+CONFIG_STD_CPP17=y
+# cavs2.5 has no LLEXT/module-manager support (see CONFIG_LIBRARY_MANAGER=n
+# below), so build tensorflow in statically rather than as an LLEXT module.
+CONFIG_COMP_TENSORFLOW=y
+CONFIG_COMP_TENSORFLOW_DEBUG_TRACE=y
+CONFIG_STACK_SIZE_EDF=32768
 CONFIG_PCM_CONVERTER_FORMAT_S16LE=y
 CONFIG_PCM_CONVERTER_FORMAT_S24LE=y
 CONFIG_PCM_CONVERTER_FORMAT_S32LE=y
@@ -33,7 +41,8 @@ CONFIG_SOF_LOG_LEVEL_INF=y
 CONFIG_DEBUG_COREDUMP=y
 CONFIG_DEBUG_COREDUMP_BACKEND_INTEL_ADSP_MEM_WINDOW=y
 CONFIG_DEBUG_COREDUMP_MEMORY_DUMP_MIN=y
-CONFIG_HEAP_MEM_POOL_SIZE=8192
+CONFIG_HEAP_MEM_POOL_SIZE=32768
+CONFIG_COMMON_LIBC_MALLOC_ARENA_SIZE=32768
 
 # Zephyr / device drivers
 CONFIG_DAI_INIT_PRIORITY=70

app/llext_relocatable.conf

@@ -1 +1,2 @@
 CONFIG_LLEXT_TYPE_ELF_RELOCATABLE=y
+CONFIG_LLEXT_EXPORT_BUILTINS_BY_SLID=y

scripts/llext_offset_calc.py

@@ -47,6 +47,9 @@ def get_elf_size(elf_name):
 			if section.header['sh_addr'] + section.header['sh_size'] > end:
 				end = section.header['sh_addr'] + section.header['sh_size']
 
+		if start == 0xffffffff:
+			return 0
+
 		size = end - start
 
 	return size

scripts/tensorflow-clone.sh

@@ -24,8 +24,9 @@ declare -a COMMIT_ID=(
     "d37128311b445e758136b8602d1bbd2a755e115d"
 )
 
-# Directory where repositories will be cloned/updated.
-BASE_DIR="$HOME/work/sof"  # Or any other desired location
+# Directory where repositories will be cloned/updated. Override by exporting
+# BASE_DIR before invoking the script.
+BASE_DIR="${BASE_DIR:-$HOME/work/sof}"
 
 # Function to check if a commit ID exists in a repository
 check_commit() {

scripts/xtensa-build-zephyr.py

@@ -1174,6 +1174,10 @@ def install_lib(platform, sof_output_dir, abs_build_dir, platform_wconfig):
 				symlink_or_copy(lib_install_dir, lib_name,
 						lib_dir, alias_libname)
 
+		for uuid in lib_uuids.get(key, []):
+			linkname = uuid + '.bin'
+			symlink_or_copy(lib_install_dir, lib_name, sof_lib_dir, linkname)
+
 def install_platform(platform, sof_output_dir, platf_build_environ, platform_wconfig):
 
 	# Keep in sync with caller

src/audio/CMakeLists.txt

@@ -56,6 +56,9 @@ if(NOT CONFIG_COMP_MODULE_SHARED_LIBRARY_BUILD)
 	if(CONFIG_COMP_MFCC)
 		add_subdirectory(mfcc)
 	endif()
+	if(CONFIG_COMP_MWW)
+		add_subdirectory(microwakeword)
+	endif()
 	if(CONFIG_COMP_MIXER)
 		add_subdirectory(mixer)
 	endif()

src/audio/Kconfig

@@ -142,6 +142,7 @@ rsource "eq_iir/Kconfig"
 rsource "google/Kconfig"
 rsource "igo_nr/Kconfig"
 rsource "mfcc/Kconfig"
+rsource "microwakeword/Kconfig"
 rsource "mixer/Kconfig"
 rsource "mixin_mixout/Kconfig"
 rsource "module_adapter/Kconfig"

src/audio/mfcc/mfcc.c

@@ -241,7 +241,16 @@ static int mfcc_prepare(struct processing_module *mod,
 
 	/* Initialize MFCC, max_frames is set to dev->frames + 4 */
 	if (cd->config && data_size > 0) {
-		ret = mfcc_setup(mod, dev->frames + 4, audio_stream_get_rate(&sourceb->stream),
+		int max_frames = dev->frames + 4;
+
+		/* DP wakes on ibs (~1 hop of input); consume the whole
+		 * hop per call so we don't re-enter the DP thread many
+		 * times per LL tick just to nibble dev->frames at a time.
+		 */
+		if (dev->ipc_config.proc_domain == COMP_PROCESSING_DOMAIN_DP)
+			max_frames = MAX(max_frames, cd->config->frame_shift);
+
+		ret = mfcc_setup(mod, max_frames, audio_stream_get_rate(&sourceb->stream),
 				 audio_stream_get_channels(&sourceb->stream));
 		if (ret < 0) {
 			comp_err(dev, "setup failed.");

src/audio/mfcc/tune/decode_all.m

@@ -4,7 +4,7 @@
 % Copyright(c) 2026 Intel Corporation.
 
 num_ceps = 13;
-num_mel = 80;
+num_mel = 40;
 
 % MFCC cepstral output files (all int32 output, Q9.23)
 ceps_files = {'mfcc_s16.raw', 'mfcc_s24.raw', 'mfcc_s32.raw'};

src/audio/mfcc/tune/run_mfcc.sh

@@ -48,7 +48,7 @@ main() {
 	if [ -n "$XTENSA_PATH" ]; then
 		TESTBENCH_RUN="$XTENSA_PATH/xt-run $SOF_WORKSPACE/sof/tools/testbench/build_xt_testbench/sof-testbench4"
 		run_testbench "sof-hda-benchmark-mfcc" xt_mfcc_s16.raw xt_mfcc_s24.raw xt_mfcc_s32.raw "Xtensa MFCC"
-		run_testbench "sof-hda-benchmark-mfccmel" xt_mel_s16.raw xt_mel_s24.raw xt_mel_s32.raw "Xtensa MFCC Mel"
+		run_testbench "sof-hda-benchmark-mfccmel40" xt_mel_s16.raw xt_mel_s24.raw xt_mel_s32.raw "Xtensa MFCC Mel"
 	fi
 }
 

src/audio/mfcc/tune/setup_mfcc.m

@@ -31,6 +31,36 @@ function setup_mfcc()
 	setup.tplg_fn = 'mel80_compress.conf';
 	export_mfcc_setup(gen_cfg, setup);
 
+	% Blob for 40-bin/20ms-hop mel spectrogram, matching TFLM micro_speech's
+	% front-end shape (TFLM_FEATURE_SIZE=40, TFLM_FEATURE_STRIDE_MS=20,
+	% TFLM_FEATURE_DURATION_MS=30) for interim wake-word sanity-checking.
+	setup = get_mel_spectrogram_config();
+	setup.frame_length = 30.0; % 480 samples at 16 kHz
+	setup.frame_shift = 20.0; % 320 samples at 16 kHz
+	setup.num_mel_bins = 40;
+	setup.tplg_fn = 'mel40.conf';
+	export_mfcc_setup(gen_cfg, setup);
+
+	% Blob for 40-bin/10ms-hop mel spectrogram, matching microWakeWord's
+	% MixConv front-end shape (40 features per 10ms stride over a 30ms
+	% window) -- see src/audio/microwakeword.
+	setup = get_mel_spectrogram_config();
+	setup.frame_length = 30.0; % 480 samples at 16 kHz
+	setup.frame_shift = 10.0; % 160 samples at 16 kHz
+	setup.num_mel_bins = 40;
+	setup.tplg_fn = 'mel40_10ms.conf';
+	export_mfcc_setup(gen_cfg, setup);
+
+	% Same 40-bin/20ms-hop mel spectrogram with compress PCM output for the
+	% on-device TFLM wake-word path (KPB -> SRC -> MFCC -> tflmcly).
+	setup = get_mel_spectrogram_config();
+	setup.frame_length = 30.0;
+	setup.frame_shift = 20.0;
+	setup.num_mel_bins = 40;
+	setup.compress_output = true;
+	setup.tplg_fn = 'mel40_compress.conf';
+	export_mfcc_setup(gen_cfg, setup);
+
 	% Blob for mel spectrogram with compress PCM output and DTX
 	setup = get_mel_spectrogram_config();
 	setup.compress_output = true;