Audio Technica ATDM-0604, Руководство пользователя

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Key functions
AEC (Acoustic Echo Canceler)
In meetings held between remote locations, such as teleconferencing, acoustic echoes can occur when the audio output from the speaker is picked
up by a microphone. The audio from the other party is amplified by the speaker and can bounce off of the ceiling, walls or floors of the room, and,
upon being picked up by the microphone, is returned to the other party along with your party’s audio. The other party hears the delayed own audio,
making it difficult to speak back.
Using the other party’s signals as reference signals, the acoustic echo canceler removes only the echoes in the other party's audio from the audio
signals sent from your party. This makes it possible to deliver clear audio, with no echoes, to the other party.
AEC
Your party Other party