Classroom sound amplification system

摘要

This invention relates to a wireless classroom sound amplification system. The system comprises a microphone device converting a voice to a sound signal and connecting to a sound processing device processing the sound signal and generating a processed sound signal, and a speaker device connecting to the sound processing device and converting the processed sound signal to a processed voice. The sound processing device further comprises a feedback cancellation unit identifying acoustical feedback in the sound signal and removing the acoustical feedback in the sound signal.