Speaker Embedding Extraction and Management

sherpa-onnx provides speaker embedding extraction via SherpaOnnxCreateSpeakerEmbeddingExtractor() and speaker enrollment/search/verification via SherpaOnnxCreateSpeakerEmbeddingManager().

See also

SherpaOnnxCreateSpeakerEmbeddingExtractor, SherpaOnnxSpeakerEmbeddingExtractorConfig, SherpaOnnxCreateSpeakerEmbeddingManager

SherpaOnnxSpeakerEmbeddingExtractorConfig config;
memset(&config, 0, sizeof(config));
config.model = "./3dspeaker_speech_campplus_sv_zh-cn_16k-common.onnx";
config.num_threads = 1;
config.provider = "cpu";
 
const SherpaOnnxSpeakerEmbeddingExtractor *extractor =
    SherpaOnnxCreateSpeakerEmbeddingExtractor(&config);
 
int32_t dim = SherpaOnnxSpeakerEmbeddingExtractorDim(extractor);
const SherpaOnnxSpeakerEmbeddingManager *manager =
    SherpaOnnxCreateSpeakerEmbeddingManager(dim);
 
// Enroll a speaker
const float *embedding = /* compute from audio */;
SherpaOnnxSpeakerEmbeddingManagerAdd(manager, "alice", embedding);
SherpaOnnxSpeakerEmbeddingExtractorDestroyEmbedding(embedding);
 
// Search for a speaker
const float *query = /* compute from test audio */;
const char *name = SherpaOnnxSpeakerEmbeddingManagerSearch(
    manager, query, 0.5f);
if (name) {
  printf("Identified: %s\n", name);
  SherpaOnnxSpeakerEmbeddingManagerFreeSearch(name);
}
SherpaOnnxSpeakerEmbeddingExtractorDestroyEmbedding(query);
 
SherpaOnnxDestroySpeakerEmbeddingManager(manager);
SherpaOnnxDestroySpeakerEmbeddingExtractor(extractor);

Model file: 3dspeaker_speech_campplus_sv_zh-cn_16k-common.onnx

Example source: speaker-identification-c-api.c