Acoustic Echo Cancellation (AEC) is a technology used to eliminate echo during voice communication. It works by identifying the sound that is being played back through speakers and subtracting it from the microphone input. This helps to ensure that the person on the other end of the call hears only the speaker's voice, without any distracting echoes. AEC is commonly used in devices like smartphones, conference phones, and video conferencing systems. By improving audio clarity, AEC enhances the overall communication experience, making conversations more natural and effective. This technology is essential for applications where clear audio is crucial, such as in teleconferencing and online meetings.