H04R2227/00 - CPC Classification Index

ClassID:

232165 ⎘

H04R2227/00 - CPC Classification

Classification description:

Details of public address [PA] systems covered by but not provided for in any of its subgroups

Sub-classes:

H04R2227/001 » Adaptation of signal processing in PA systems in dependence of presence of noise 96
H04R2227/003 » Digital PA systems using e.g. LAN or internet 990
H04R2227/005 » Audio distribution systems for home, i.e. multi-room use 1,2K
H04R2227/007 » Electronic adaptation of audio signals to reverberation of the listening space for PA 86
H04R2227/009 » Signal processing in [PA] systems to enhance the speech intelligibility 92

Recent Application in this class:

20220408187

2022-12-22

DEVICE FOR ELECTROINICALLY CONNECTING AND DISCONNECTING PORTIONS OF AN ELECTRICAL LINE, PUBLIC ADDRESS SYSTEM, METHOD FOR DETECTING A FAILURE IN AN ELECTRICAL LINE

20190268552

2019-08-29

Distributed audio control method, device system, and software product

20190200129

2019-06-27

Device for electroinically connecting and disconnecting portions of an electrical line, public address system, method for detecting a failure in an electrical line

20190037149

2019-01-31

Distributed audio control method, device system, and software product

20180234638

2018-08-16

Distributed audio control method, device system, and software product

20160182859

2016-06-23

Distributed audio control method, device system, and software product

20150189455

2015-07-02

TRANSFORMATION OF MULTIPLE SOUND FIELDS TO GENERATE A TRANSFORMED REPRODUCED SOUND FIELD INCLUDING MODIFIED REPRODUCTIONS OF THE MULTIPLE SOUND FIELDS