---
license: apache-2.0
language:
- zh
metrics:
- accuracy
pipeline_tag: audio-classification
---
# hubert-base-ch-speech-emotion-recognition
This model uses [TencentGameMate/chinese-hubert-base]([TencentGameMate/chinese-hubert-base · Hugging Face](https://huggingface.co/TencentGameMate/chinese-hubert-base)) as the pre-training model for training on the CASIA dataset.

The CASIA dataset provides 1200 samples of recordings from actor performing on 6 different emotions in Chinese(The official website provides a total of 9600 pieces of data, and the data set I used may not be complete), which are:

```python
emotions = ['anger', 'fear', 'happy', 'neutral', 'sad', 'surprise']
```

# Usage
```python
import os
import random

import librosa
import torch
import torch.nn as nn
import torch.nn.functional as F
from transformers import AutoConfig, Wav2Vec2FeatureExtractor, HubertPreTrainedModel, HubertModel

model_name_or_path = "xmj2002/hubert-base-ch-speech-emotion-recognition"
duration = 6
sample_rate = 16000

config = AutoConfig.from_pretrained(
    pretrained_model_name_or_path=model_name_or_path,
)


def id2class(id):
    if id == 0:
        return "angry"
    elif id == 1:
        return "fear"
    elif id == 2:
        return "happy"
    elif id == 3:
        return "neutral"
    elif id == 4:
        return "sad"
    else:
        return "surprise"


def predict(path, processor, model):
    speech, sr = librosa.load(path=path, sr=sample_rate)
    speech = processor(speech, padding="max_length", truncation=True, max_length=duration * sr,
                       return_tensors="pt", sampling_rate=sr).input_values
    with torch.no_grad():
        logit = model(speech)
    score = F.softmax(logit, dim=1).detach().cpu().numpy()[0]
    id = torch.argmax(logit).cpu().numpy()
    print(f"file path: {path} \t predict: {id2class(id)} \t score:{score[id]} ")


class HubertClassificationHead(nn.Module):
    def __init__(self, config):
        super().__init__()
        self.dense = nn.Linear(config.hidden_size, config.hidden_size)
        self.dropout = nn.Dropout(config.classifier_dropout)
        self.out_proj = nn.Linear(config.hidden_size, config.num_class)

    def forward(self, x):
        x = self.dense(x)
        x = torch.tanh(x)
        x = self.dropout(x)
        x = self.out_proj(x)
        return x


class HubertForSpeechClassification(HubertPreTrainedModel):
    def __init__(self, config):
        super().__init__(config)
        self.hubert = HubertModel(config)
        self.classifier = HubertClassificationHead(config)
        self.init_weights()

    def forward(self, x):
        outputs = self.hubert(x)
        hidden_states = outputs[0]
        x = torch.mean(hidden_states, dim=1)
        x = self.classifier(x)
        return x


processor = Wav2Vec2FeatureExtractor.from_pretrained(model_name_or_path)
model = HubertForSpeechClassification.from_pretrained(
    model_name_or_path,
    config=config,
)
model.eval()

file_path = [f"test_data/{path}" for path in os.listdir("test_data")]
path = random.sample(file_path, 1)[0]
predict(path, processor, model)

```
# Training setting

* Data set segmentation ratio: training set: verification set: test set = 0.6:0.2:0.2

* seed: 34

* batch_size: 36

* lr: 2e-4

* optimizer: AdamW(betas=(0.93,0.98), weight_decay=0.2)

* scheduler: Step_LR(step_size=10, gamma=0.3)

* classifier dropout: 0.1

* optimizer parameter:

  ```python
    for name, param in model.named_parameters():
        if "hubert" in name:
            parameter.append({'params': param, 'lr': 0.2 * lr})
        else:
            parameter.append({'params': param, "lr": lr})
  
  ```

  

# Metric

**Loss(test set): 0.1165**

**Accuracy(test set): 0.972**

*Accuracy curve of training set and verification set*

<div> <img src="https://huggingface.co/xmj2002/hubert-base-ch-speech-emotion-recognition/resolve/main/accuracy.png" width = 80%/> </div>


*Loss curve of training set and verification set*

<div> <img src="https://huggingface.co/xmj2002/hubert-base-ch-speech-emotion-recognition/resolve/main/loss.png" width = 80%/> </div>