Details of public address [PA] systems covered by H04R27/00 but not provided for in any of its subgroups

Child Classifications

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• H04R 2227/001 Adaptation of signal processing in PA systems in dependence of presence of noise
• H04R 2227/003 Digital PA systems using, e.g. LAN or internet
• H04R 2227/005 Audio distribution systems for home, i.e. multi-room use
• H04R 2227/007 Electronic adaptation of audio signals to reverberation of the listening space for PA
• H04R 2227/009 Signal processing in [PA] systems to enhance the speech intelligibility