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Surround parameters (1) (2-channel mode)
AUTO-ST (auto stereo) mode
2-channel sources are played in 2-channel stereo.
When this mode is selected in the auto decode mode, multi-channel sources (DVD, BS digital, etc.) are played in the multi-channel mode,
while 2-channel sources (CDs, etc.) are automatically played in stereo.
PLII CINEMA / PLII MUSI / PRO LOGIC mode
Even 2-channel sources undergo Dolby Pro Logic II processing and are played in the multi-channel mode.
Dolby Digital Pro-Logic II processing is applied to 2-channel sources as well to play them in the multi-channel mode.
When this mode is selected in the auto decode mode, multi-channel sources (DVD, BS digital, etc.) are played in the multi-channel mode,
and 2-channel sources (CDs, etc.) are also automatically processed with Dolby Digital Pro-Logic II and played in the multi-channel mode.
• PLII CINEMA (Dolby Pro Logic II CINEMA) mode
This mode is suited for playing movies recorded in Dolby Surround as well as regular sources recorded in stereo. A high precision decoder
decodes the signals into 5 channels, resulting in uniform 360 degree surround sound even with 2-channel sources.
The MUSIC mode may be more effective for sources containing a high ratio of stereo music. Try both and choose the most effective
mode.
• PLII MUSIC (Dolby Pro Logic II MUSIC) mode
This mode is suited for surround playback of stereo music signals. The inverted phase signals (the reverberation component of the music
signals contains a high ratio of these) are played from the surround channel, and at the same time the frequency response of the surround
channel is optimized to achieve a natural sound with a sense of expansion.
With music signals, the sound field expansion differs greatly according to the type of music, the recording conditions (live, etc.) and the
contents of the signal source. Because of this, the MUSIC mode includes optional parameters for further adjusting the sound field.
• PANORAMA
The front stereo sound field image is extended to the surround channel.
This is effective if under normal conditions the stereo image is narrow and the surround effect seems weak.
• DIMENSION
This shifts the center of the sound field image to the front or surround side.
The playback balance of the different channels can be adjusted regardless of the amount of reverberation component in the source. If
the sound field image is biased towards the front or surround side, this optional parameter can be used to correct it.
• CENTER WIDTH
This adjusts the method of playback of the center signal component from the center channel only to the front channel only.
When the center channel is played in a way prioritizing separation, the position of the front channel sound field is clearer but the overall
sound field image concentrates at the center and the relationship between the different channels seems weaker. This parameter can
be adjusted to improve the sense of stability of the sound field image and achieve natural horizontal expansion.
• PRO LOGIC (Dolby Pro Logic) mode
This is the conventional Dolby Pro Logic compatible mode. In this mode sources recorded in Dolby Surround are decoded with a
playback image faithful to the original recording.