H04S   1/00		ͥʣȣӣȣӣͥˡΣ	Two-channel systems(<b>H04S5/00</b>, <b>H04S7/00</b> take precedence)	7477
H04S   3/00		ͥʾ塤㡥ͥ롤ѤʣȣӣȣӣͥˡΣ	Systems employing more than two channels, e.g. quadraphonic(<b>H04S5/00</b>, <b>H04S7/00</b> take precedence)	5584
H04S   3/02		ޥȥꥯʤϿ椬ŪȤ߹蘆Ρ㡥ߤ˴ؤưܤʤ줿Ȥ߹蘆ΡΣ	of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other	1037
H04S   5/00		ƥ쥪㡥ղŪʥͥ뿮椬Υ뿮椫ܡٱޤϻĶˤäΣ	Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation	2224
H04S   5/02		ͥ㡥ͥ뿮椬ͥ륹ƥ쥪椫ΡΣ	of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals	3623
H04S   7/00		ؼ֡֡㡥ХΣ	Indicating arrangements; Control arrangements, e.g. balance control	13236
