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Support scaling the duration of a pause in TTS. (#1820)

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This commit is contained in:
Fangjun Kuang
2025-02-08 12:47:26 +08:00
committed by GitHub
parent d38cb81014
commit 69f489f0cd
24 changed files with 171 additions and 19 deletions
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15
sherpa-onnx/csrc/offline-tts.h
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@@ -32,14 +32,20 @@ struct OfflineTtsConfig {
// If you set it to -1, then we process all sentences in a single batch.
int32_t max_num_sentences = 1;
// A silence interval containing audio samples with value close to 0.
//
// the duration of the new interval is old_duration * silence_scale.
float silence_scale = 0.2;
OfflineTtsConfig() = default;
OfflineTtsConfig(const OfflineTtsModelConfig &model,
const std::string &rule_fsts, const std::string &rule_fars,
int32_t max_num_sentences)
int32_t max_num_sentences, float silence_scale)
: model(model),
rule_fsts(rule_fsts),
rule_fars(rule_fars),
max_num_sentences(max_num_sentences) {}
max_num_sentences(max_num_sentences),
silence_scale(silence_scale) {}
void Register(ParseOptions *po);
bool Validate() const;
@@ -50,6 +56,11 @@ struct OfflineTtsConfig {
struct GeneratedAudio {
std::vector<float> samples;
int32_t sample_rate;
// Silence means pause here.
// If scale > 1, then it increases the duration of a pause
// If scale < 1, then it reduces the duration of a pause
GeneratedAudio ScaleSilence(float scale) const;
};
class OfflineTtsImpl;