对声回声必需进行抑制，否则会严重影响通信系统的性能，引起啸叫等失效状态。
At last they were sent back to the far-end and generated acoustic echoes. This kind of echoes must be suppressed in the modern communication systems.
对声回声必需进行抑制，否则会严重影响通信系统的性能，引起啸叫等失效状态。
At last they were sent back to the far-end and generated acoustic echoes. This kind of echoes must be suppressed in the modern communication systems.
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