Acoustic Echo Cancellation (AEC) is an audio processing technology that removes echoes created when audio from a speaker is captured again by a microphone. It improves speech clarity and prevents repeated or delayed audio during real-time voice communication.
AEC is applied before speech recognition in the Voice AI pipeline. It is commonly used in AI phone agents, VoIP platforms, WebRTC applications, and video conferencing. Removing echo improves transcription accuracy and enables smooth two-way conversations.