Surround
The
(1)Dolby Surround
q Dolby Digital (Dolby Surround AC-3)
Dolby Digital is the
Dolby Digital consists of up to “5.1” channels - front left, front right, center, surround left, surround right, and an additional channel exclusively reserved for additional deep bass sound effects (the Low Frequency Effects – LFE – channel, also called the “.1” channel, containing bass frequencies of up to 120 Hz).
Unlike the analog Dolby Pro Logic format, Dolby Digital’s main channels can all contain full range sound information, from the lowest bass, up to the highest frequencies – 22 kHz. The signals within each channel are distinct from the others, allowing pinpoint sound imaging, and Dolby Digital offers tremendous dynamic range from the most powerful sound effects to the quietest, softest sounds, free from noise and distortion.
2 Dolby Digital and Dolby Pro Logic
Comparison of home surround systems | Dolby Digital | Dolby Pro Logic | |
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No. recorded channels (elements) | 5.1 ch | 2 ch | |
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No. playback channels | 5.1 ch | 4 ch | |
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Playback channels (max.) | L, R, C, SL, SR, SW | L, R, C, S (SW - recommended) | |
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Audio processing | Digital discrete processing Dolby Digital | Analog matrix processing Dolby Surround | |
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High frequency playback limit of surround | 20 kHz | 7 kHz | |
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2Dolby Digital compatible media and playback methods
Marks indicating Dolby Digital compatibility: and .
The following are general examples. Also refer to the player’s operating instructions.
Media | Dolby Digital output jacks | Playback method (reference page) | |
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LD (VDP) | Coaxial Dolby Digital RF output jack | Set the input mode to “AUTO”. | |
1 | (Page 33) | ||
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| Optical or coaxial digital output | Set the input mode to “AUTO”. | |
DVD | (same as for PCM) | ||
(Page 33) | |||
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Others | Optical or coaxial digital output | Set the input mode to “AUTO”. | |
(satellite broadcasts, CATV, etc.) | (same as for PCM) | (Page 33) | |
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1 Please use a commercially available adapter when connecting the Dolby Digital RF
Please refer to the instruction manual of the adapter when making connection.
2 Some DVD digital outputs have the function of switching the Dolby Digital signal output method between “bit stream” and “(convert to) PCM”. When playing in Dolby Digital surround on this unit, switch the DVD player’s output mode to “bit stream”. In some cases players are equipped with both “bit stream + PCM” and “PCM only” digital outputs. In this case connect the “bit stream + PCM” jacks to this unit.
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