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流式合成音频处理 #87

@yiluzhuimeng

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@yiluzhuimeng

在流式合成的地方spark_engin.py 的做淡出淡出的地方:
cross_faded_overlap = chunk_audio[:cross_fade_samples] * fade_in + last_chunk_audio[-cross_fade_samples:] * fade_out

是不是应该用np.concatenate 将 last_chunk_audio[-cross_fade_samples:] * fade_out 和 chunk_audio[:cross_fade_samples] * fade_in 拼接到一起;
按道理应该前一段音频末尾做fade_out,当前音频初始位置做fade_in,再加上当前音频的部分

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