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Home > Features > Echo Canceller > Definition of echo and comparison of echo prevention techniques
Echo tends to occur more often with an audio conference system than with a telephone set on which the microphone and speaker are isolated from each other. The Projectphone incorporates a high-performance adaptive echo canceller that reproduces voices higher clarify by eliminating echoes.
This technique prioritizes the microphone with a louder voice volume and switches off the one with lower volume to suppress echoes.
Only one voice is transmitted in one direction, and it tends to be interrupted.
Any voices picked up from the speakers by the microphones are cancelled with signal filtering.
Two-way talks are possible without voice interruption.