Pioneer VSA-AX10 Manuel d'utilisateur télécharger pdf (Page 92)

Techno Tidbits & Problem-solving

Dolby Pro Logic II

Dolby Pro Logic II is an improved version of Dolby Pro Logic technology with extended matrix decoding

technology that can create 5.1 channel sound from two channel sources. Dolby Pro Logic II creates basic 5

channel sound by using the innovative "steering logic" circuit. Therefore when listening to typical two-channel

sources like CD, the listener can enjoy a richer spatial effect. When using software encoded with Dolby

Surround, this decoding system affords the listener an improved surround experience with greater sound detail.

Chart Comparing Dolby Pro Logic and Dolby Pro Logic II

This unit has a three Dolby Pro Logic II functions. The first is "Movie Mode" (suitable for film soundtracks);

"Music Mode" (suitable for music); "Pro Logic Mode" (this mode is less sensitive to the quality of the source

material, so may be useful when Movie Mode or Music Mode do not give good results). One can select one of

them depending on your soundtrack of choice.

• For amplifiers and components other than the VSA-AX10 Dolby Pro Logic II may not have the above

mentioned functions.

Dolby Digital Surround EX

This new recording technology is able to play 6.1 channel sound and was developed in a collaboration between

Dolby Laboratories and Lucasfilm, Ltd. for the film "Stars Wars: The First Episode", the first movie ever to be

made with Dolby Digital Surround EX technology. In a movie theater this format affords the listener vivid

surround sound experience replete with the effect of sounds flying overhead, even for those seated towards the

sides of the theater.

Dolby Digital Surround EX contains surround back channels which are dubbed into the soundtrack in studio. The

channels are encoded into the left and right channels of the soundtrack so this format can be compatible with

Dolby Digital 5.1 channel decoding. For a list of movies that contain Dolby Digital Surround EX soundtracks see

Dolby website at: http://www.dolby.com

THX Surround EX technology was developed for movie theater use originally but has been extended for home

theater use and consumers can no benefit from this excellent, realistic sound format. (For more details see "THX

Surround EX" on the next page.) This unit is equipped with a THX Surround EX decoder.

memo

Surround Sound Mono Stereo

Pro Logic Pro Logic II

Effective sound source Dolby Surround encoded All two channel stereo sources

sources

Frequency Range Surround within 7 kHz All Channels/Full Range

MPEG Audio

MPEG is an audio encoding system which delivers high quality audio for music and movies. By removing

frequencies which are out of the human hearing range, the sound is then compressed to enable the

transmission of mono, stereo, or multichannel (5.1 and 7.1) audio in a single bitstream which is why it has

become a standard audio format for DVD and personal computers. The composition and versatility of MPEG

audio also ensures that the presentation of a multichannel soundtrack will sound appropriate on everything from

a 7.1 channel surround sound home theater setup to a mono television set. Above all, MPEG audio is designed

to be compatible with past and future MPEG audio versions, which means that future versions of MPEG audio

will be compatible with decoders currently being produced (the signal is merely reconfigured to fit the number of

channels available in a system).

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