Dolby Labs: come potrebbe essere gestito in futuro l'audio HD
In questo interessante articolo apparso sul sito della Dolby Labs:
Ensuring Compatibility Between Next-Generation High-Definition Disc Players and Your A/V System
viene affermato:
Citazione:
In HD disc players, the audio will be handled in the same fashion. Soundtracks decoded from the disc, as well as audio elements streamed or downloaded from an Internet connection or generated internally in the player, will be decoded in the player as digital PCM signals. PCM is the format players use to perform all internal audio processing operations, including mixing. In the mixing stage, streaming commentary, button sounds, and other non-disc-audio will be mixed with the native 5.1 or 7.1 soundtrack from the disc.
E ancora...
Citazione:
Increasingly, A/V processors and receivers are being equipped with IEEE 1394 (FireWire®) or HDMI connections, capable of transporting up to eight channels of 24-bit/96 kHz PCM audio content. If your A/V receiver is equipped with this type of next-generation connection, you should look for a similarly furnished next-generation optical media player. By this method of connection, the mixed PCM signal is transported from the HD player to your A/V receiver, where digital signal processing and bass management can be easily effected.
http://www.dolby.com/images/consumer...rueHD/fig2.jpg
In pratica, una ipotesi molto plausibile sarebbe che qualunque formato audio HD fosse presente sui nuovi DVD HD, sara' il lettore che lo convertira' internamente in PCM multicanale, e quind sara' inviato via HDMI 1.1 all'ampli.
L'analogia viene fatta con i formati video, che sono convertiti dal lettore stesso in segnali video analogici o digitali.
Quindi, se questa ipotesi sara' realta', potrebbe non esserci mai bisogno di nuovi ampli con nuove codifiche audio (con codec magari da aggiornare spesso :(), ma tutto viaggera' in PCM via HDMI 1.1.
E andranno bene quelli che ci sono gia' in vendita! :yeah:
Saluti
Eragon
(aka Nemo propheta in patria)
