| 摘要 |
A classroom sound amplification system adapted for providing information aiding at diagnosing possible erroneous or inappropriate conditions or configurations of the system is disclosed. 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 may further comprise a feedback cancellation unit identifying acoustical feedback in the sound signal and removing the acoustical feedback in the sound signal. Communication with the parts of the system carried by a moving person may be wireless.
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