Adaptive Threshold Automatic Microphone Mixing System Becomes Public Domain
The author demonstrated the first effective automatic microphone mixer in 1974 at the 49th AES Convention in New York. A later system, specialized for speech, has been manufactured since 1976. Other manufacturers developed their own systems, and automatic mike mixers have become common in unattended sound reinforcement systems in the U.S.A. The original patent expires in 1991. The author celebrates this anniversary by explaining how to use it.
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