用vggish-keras提取音频特征的代码

以下是使用vggish-keras提取音频特征的代码：

import numpy as np
import tensorflow as tf
from keras.models import Model
from keras.layers import Input, Dense, Dropout, Flatten
from keras.optimizers import Adam
from vggish_keras import VGGish

# Load VGGish model
vggish = VGGish(include_top=False, input_shape=(None, 96, 1))

# Freeze all layers except the last one
for layer in vggish.layers[:-1]:
    layer.trainable = False

# Add a dense layer and output layer
x = Flatten()(vggish.output)
x = Dense(512, activation='relu')(x)
x = Dropout(0.5)(x)
output = Dense(128, activation='softmax')(x)

# Create a new model with VGGish and the dense layers
model = Model(inputs=vggish.input, outputs=output)

# Compile the model
model.compile(optimizer=Adam(lr=0.001), loss='categorical_crossentropy', metrics=['accuracy'])

# Load audio data and preprocess it
audio_data = np.load('audio_data.npy')
audio_data = np.expand_dims(audio_data, axis=-1)

# Train the model
model.fit(audio_data, labels, epochs=10, batch_size=32)

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