5. FRONT PANEL OPERATION continued …
•Adaptive Decorrelation – In a movie theatre, a large number of surround speakers help create an enveloping surround sound experience, but in a home theatre there are usually only two speakers. Unless you are using properly positioned dipoles, surround speakers can sound like headphones that lack spaciousness and envelopment – they will also collapse into the closest speaker as you move away from the middle seating position. Adaptive Decorrelation senses the presence of identical surround channels (mono) and slightly changes one surround channel's time and phase relationship with respect to the other. This expands the listening position and creates – with only two speakers – the same spacious surround experience found in a movie theatre. Adaptive Decorrelation does not operate when the surround channels are different, as is often the case in discrete multichannel source material.
•ASA (Advanced Speaker Array) – ASA is a proprietary THX technology that processes the sound fed to the two surround and two rear speakers to provide an optimal surround sound experience. When you set up your home theater system using all 7.1 speaker outputs
Depending on source material and speaker configuration, THX processing is available as follows:
THX Cinema: | 5.1 to 7.1 output with 2.0- and |
| Processing: |
| When THX Cinema is selected, Dolby Pro Logic IIx Movie is automatically |
| engaged. Alternatively, Dolby Pro Logic or DTS Neo:6 Cinema may be selected. |
| Other Surround Modes are not available and do not appear when pressing MODE. |
THX Ultra2 Cinema: | 7.1 output with |
| Processing: |
| THX Ultra2 Cinema mode plays 5.1 movies using all 7.1 speakers giving you the |
| best possible THX movie watching experience with 5.1 program material. In this |
| mode, ASA processing blends the |
| providing the optimal mix of ambient and directional surround sounds. |
THX MusicMode: | 7.1 output with |
| Processing: Timbre Matching, Adaptive Decorrelation, ASA (Music) |
| THX MusicMode can be selected when playing |
| THX ASA processing is applied to the surround channels of all 5.1 channel |
| encoded music sources to provide a wide stable rear soundstage. |
THX Games Mode: | 7.1 output with 2.0- and |
| Processing: Timbre Matching, ASA (Games) |
| Game audio is mixed and monitored in a different environment than that of music |
| and movies. The interactive nature of the audio requires a playback system which |
| can provide 360 degree panning while preserving the ambient nature of |
| background sound elements. When playing back 5.1 games, THX Games Mode |
| may be engaged. Suitable sources are Dolby Digital 5.1 and DTS 5.1 game sources. |
| If THX Games Mode is engaged with 2.0 input, the source is first converted to 5.1 |
| via Pro Logic IIx Game mode. |
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