Detecting individual phonemes

This commit is contained in:
Daniel Wolf 2015-09-10 21:31:25 +02:00
parent eb675e4968
commit f0285c6488
3 changed files with 194 additions and 6 deletions

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@ -3,7 +3,127 @@
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@ -4,4 +4,9 @@ project(LipSync)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(SOURCE_FILES main.cpp) set(SOURCE_FILES main.cpp)
add_executable(LipSync ${SOURCE_FILES})
include_directories("lib/sphinxbase-5prealpha-2015-08-05/include" "lib/pocketsphinx-5prealpha-2015-08-05/include")
FILE(GLOB_RECURSE SPHINX_BASE "lib/sphinxbase-5prealpha-2015-08-05/src/libsphinxbase/*.c")
FILE(GLOB POCKETSPHINX "lib/pocketsphinx-5prealpha-2015-08-05/src/libpocketsphinx/*.c")
add_executable(LipSync ${SOURCE_FILES} ${SPHINX_BASE} ${POCKETSPHINX})

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@ -1,8 +1,67 @@
#include <iostream> #include <pocketsphinx.h>
#include <stdexcept>
#include <fstream>
#include <memory>
using namespace std; using std::runtime_error;
using std::shared_ptr;
int main() { #define MODELDIR "X:/dev/projects/LipSync/lib/pocketsphinx/model"
cout << "Hello, World!" << endl;
return 0; int main(int argc, char *argv[]) {
shared_ptr<cmd_ln_t> config(
cmd_ln_init(
nullptr, ps_args(), true,
// Set acoustic model
"-hmm", MODELDIR "/en-us/en-us",
// Set phonetic language model
"-allphone", MODELDIR "/en-us/en-us-phone.lm.bin",
// The following settings are Voodoo to me.
// I copied them from http://cmusphinx.sourceforge.net/wiki/phonemerecognition
// Set beam width applied to every frame in Viterbi search
"-beam", "1e-20",
// Set beam width applied to phone transitions
"-pbeam", "1e-20",
// Set language model probability weight
"-lw", "2.0",
nullptr),
[](cmd_ln_t* config) { cmd_ln_free_r(config); });
if (!config) throw runtime_error("Error creating configuration.");
shared_ptr<ps_decoder_t> recognizer(
ps_init(config.get()),
[](ps_decoder_t* recognizer) { ps_free(recognizer); });
if (!recognizer) throw runtime_error("Error creating speech recognizer.");
shared_ptr<FILE> file(
fopen("X:/dev/projects/LipSync/lib/pocketsphinx/test/data/goforward.raw", "rb"),
[](FILE* file) { fclose(file); });
if (!file) throw runtime_error("Error opening sound file.");
int error = ps_start_utt(recognizer.get());
if (error) throw runtime_error("Error starting utterance processing.");
int16 buffer[512];
while (!feof(file.get())) {
size_t sampleCount = fread(buffer, 2, 512, file.get());
int searchedFrameCount = ps_process_raw(recognizer.get(), buffer, sampleCount, false, false);
if (searchedFrameCount < 0) throw runtime_error("Error decoding raw audio data.");
}
error = ps_end_utt(recognizer.get());
if (error) throw runtime_error("Error ending utterance processing.");
ps_seg_t *segmentationIter;
int32 score;
for (segmentationIter = ps_seg_iter(recognizer.get(), &score); segmentationIter; segmentationIter = ps_seg_next(segmentationIter)) {
// Get phoneme
char const *phoneme = ps_seg_word(segmentationIter);
// Get timing
int startFrame, endFrame;
ps_seg_frames(segmentationIter, &startFrame, &endFrame);
printf(">>> %-5s %-5d %-5d\n", phoneme, startFrame, endFrame);
}
return 0;
} }