Isethulo se-FCC HAC 2019 Izimfuneko Zokuhlolwa Kwevolumu kanye Namazinga e-United States

I-Federal Communications Commission (FCC) e-United States idinga ukuthi kusukela ngomhla ka-5 Disemba 2023, zonke izisetshenziswa zetheminali eziphathwa ngesandla kufanele zihlangabezane nezimfuneko zezinga le-ANSI C63.19-2019 (okungukuthi izinga le-HAC 2019). Uma kuqhathaniswa nenguqulo yakudala ye-ANSI C63.19-2011 (HAC 2011), umehluko omkhulu phakathi kwakho kokubili usekwengezweni kwezidingo zokuhlolwa kokulawulwa kwevolumu kuzinga le-HAC 2019. Izinto zokuhlola zifaka phakathi ukuhlanekezela, ukuphendulwa kwemvamisa, kanye nokuzuza kweseshini. Izidingo ezifanele nezindlela zokuhlola zidinga ukubhekisa ku-ANSI/TIA-5050-2018 ejwayelekile.
I-US FCC ikhiphe umthethonqubo wokungakhokhi 285076 D05 HAC Waiver DA 23-914 v01 ngoSepthemba 29, 2023, nesikhathi sokukhululwa seminyaka engu-2 kusukela ngomhla ka-5 Disemba 2023. Kudingeka ukuthi izicelo ezintsha zesitifiketi kufanele zithobele izimfuneko zika-2850 ka-2850 I-D04 Volume Control v02 noma ngokuhambisana nedokhumenti yenqubo yokukhululwa kwesikhashana KDB285076 D05 HAC Waiver DA 23-914 v01 ngaphansi kuka-285076 D04 Ukulawulwa Kwevolumu v02. Lokhu kukhululwa kuvumela amadivayisi aphathwa ngesandla abamba iqhaza esitifiketini ukuthi ehlise izimfuneko ezithile zokuhlola ngokuvumelana nezindlela zokuhlola ze-ANSI/TIA-5050-2018 ukuthi ziphumelele ukuhlolwa kokulawulwa kwevolumu.
Ngokuhlolwa kweVolume Control, izimfuneko ezithile zokukhululwa zimi kanje:
(1) Ukuze kuhlolwe i-narrowband ne-broadband coding yamasevisi ocingo enethiwekhi engenantambo (njenge-AMR NB, AMR WB, EVS NB, EVS WB, VoWiFi, njll.), izimfuneko zimi kanje:
1) Ngaphansi kwengcindezi engu-2N, umfakisicelo ukhetha izinga lombhalo wekhodi we-narrowband kanye nenani lombhalo wekhodi we-broadband. Ngevolumu ethile, kuwo wonke amasevisi ezwi, ukusebenza kwebhendi, nezilungiselelo zembobo yomoya, inzuzo yeseshini kufanele ibe ngu-≥ 6dB, futhi ukuhlanekezela nokusabela kwemvamisa kufanele kuhlangabezane nezidingo ezijwayelekile.
2) Ngaphansi kwengcindezi engu-8N, umfakisicelo ukhetha izinga lombhalo wekhodi we-narrowband kanye nenani lombhalo wekhodi we-broadband, futhi kuzo zonke izinsiza zezwi, ukusebenza kwebhendi, nezilungiselelo zembobo yomoya ngevolumu efanayo, ukuzuza kweseshini kufanele kube ngu-≥ 6dB, esikhundleni sezinga ≥ 18dB. Ukuhlanekezela kanye nempendulo yemvamisa ihlangabezana nezidingo zezinga.
(2) Ngokunye amakhodi e-narrowband kanye ne-broadband okungashiwongo entweni (1), inzuzo yeseshini kufanele ibe ngu-≥ 6dB ngaphansi kwezimo zengcindezi ye-2N ne-8N, kodwa asikho isidingo sokuhlola ukuhlanekezela nokuphendula imvamisa.
(3) Ngezinye izindlela zokufaka ikhodi ezingashiwongo entweni (1) (ezifana ne-SWB, FB, OTT, njll.), azidingi ukuhlangabezana nezimfuneko ze-ANSI/TIA-5050-2018.
Ngemuva komhla ka-5 Disemba 2025, uma i-FCC ingawakhiphi amanye amadokhumenti, ukuhlolwa kweVolume Control kuzokwenziwa ngokuqinile ngokuvumelana nezimfuneko ze-ANSI/TIA-5050-2018.
Ilebhu yokuhlola ye-BTF inamandla okuhlola isitifiketi se-HAC 2019, okuhlanganisa ukuphazamiseka kwe-RF Emission RF, ukuhlola isignali ye-T-Coil, kanye nezidingo zokulawula ivolumu yokulawula ivolumu.