keep empty speech result (#1772)

彭震东

2024-05-30 a64b7d8d8aeb2bb543ca703045a45f42470e9a63

 runtime/onnxruntime/src/paraformer-torch.cpp

@@ -16,7 +16,7 @@
}

// offline
void ParaformerTorch::InitAsr(const std::string &am_model, const std::string &am_cmvn, const std::string &am_config, int thread_num){
void ParaformerTorch::InitAsr(const std::string &am_model, const std::string &am_cmvn, const std::string &am_config, const std::string &token_file, int thread_num){
    LoadConfigFromYaml(am_config.c_str());
    // knf options
    fbank_opts_.frame_opts.dither = 0;
@@ -28,8 +28,8 @@
    fbank_opts_.energy_floor = 0;
    fbank_opts_.mel_opts.debug_mel = false;

    vocab = new Vocab(am_config.c_str());
   phone_set_ = new PhoneSet(am_config.c_str());
    vocab = new Vocab(token_file.c_str());
   phone_set_ = new PhoneSet(token_file.c_str());
    LoadCmvn(am_cmvn.c_str());

    torch::DeviceType device = at::kCPU;
@@ -281,10 +281,10 @@
        if(asr_feats.size() != 0){
            LfrCmvn(asr_feats);
        }
        int32_t num_frames  = asr_feats.size() / feature_dim;
        int32_t num_frames  = asr_feats.size();
        paraformer_length.emplace_back(num_frames);
        if(max_size < asr_feats.size()){
            max_size = asr_feats.size();
        if(max_size < asr_feats.size()*feature_dim){
            max_size = asr_feats.size()*feature_dim;
            max_frames = num_frames;
        }

@@ -373,6 +373,9 @@
                }
            }
            results.push_back(result);
         if (wfst_decoder){
            wfst_decoder->StartUtterance();
         }
        }
    }
    catch (std::exception const &e)