具体代码
时间: 2023-07-02 21:19:52 浏览: 63
以下是一个基于Keras的LSTM音乐生成器的代码示例:
```python
from keras.models import load_model
from music21 import instrument, note, stream
import numpy as np
# 加载训练好的模型
model = load_model('model.h5')
# 准备起始序列
sequence_length = 100
sequence = ['G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5', 'G5', 'B4', 'D5', 'G5', 'B4', 'D5', 'G5', 'D5', 'G5', 'D5']
# 转换序列为模型所需的输入格式
note_to_int = dict((note, number) for number, note in enumerate(sorted(set(sequence))))
input_sequence = [note_to_int[note] for note in sequence]
input_sequence = np.reshape(input_sequence, (1, sequence_length, 1))
input_sequence = input_sequence / float(len(set(sequence)))
# 生成音乐
generated_sequence = []
for i in range(500):
# 预测下一个音符的概率分布
prediction = model.predict(input_sequence, verbose=0)
# 从概率分布中采样出一个音符
index = np.argmax(prediction)
result = int_to_note[index]
generated_sequence.append(result)
# 将生成的音符添加到输入序列中
input_sequence = np.append(input_sequence[:,1:,:],[[index/float(n_vocab)]],axis=1)
# 将生成的音乐转换为MIDI文件格式
offset = 0
output_notes = []
for pattern in generated_sequence:
# 如果是和弦,则创建一个和弦对象
if ('.' in pattern) or pattern.isdigit():
notes_in_chord = pattern.split('.')
notes = []
for current_note in notes_in_chord:
new_note = note.Note(int(current_note))
new_note.storedInstrument = instrument.Piano()
notes.append(new_note)
new_chord = chord.Chord(notes)
new_chord.offset = offset
output_notes.append(new_chord)
# 如果是音符,则创建一个音符对象
else:
new_note = note.Note(pattern)
new_note.offset = offset
new_note.storedInstrument = instrument.Piano()
output_notes.append(new_note)
# 将偏移量增加半拍,以便生成的音乐更加连贯
offset += 0.5
midi_stream = stream.Stream(output_notes)
midi_stream.write('midi', fp='output.mid')
```
需要注意的是,该代码仅为示例代码,具体的实现方式可能因应用场景不同而有所不同。在实际应用中,需要根据具体的需求进行调整和优化。
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