Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456 JPH0348667Y2 - - Google Patents
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Chordic keyboard system for generating a signal in response to a chord that is assigned using a correlation based on a composite chord-difficulty index