5.1 Movie DSP preset parameters
Parameter | Options | What it changes |
Surr. Rear | Surr. Rear, Surr. Side, | Switches the surround |
| Surr. All | signal between the side |
|
| and rear speakers. |
LFE | 0 to | The relative level of the |
|
| LFE bass channel. |
Max SPL * | 105 to 120dB SPL | The |
|
| LFE subwoofer. |
Limit * | The | |
|
| total bass signal added |
|
| to the main speakers. |
Compress † | Off, Low, Med, | The dynamic range |
| Top, Max, Mix | control; see opposite. |
*See Using
†Dolby Digital and Dolby Digital THX only.
Using dynamic range control
Because Dolby Digital is a digital format it allows dynamic range control without the distortion involved in analogue methods. The Compress parameter can be set to one of the following options:
Option | Description |
Off | No compression. |
Low | Provides moderate |
| raises quiet sounds above the background noise, |
| which is ideal for demonstration and quiet listening. |
Med | Provides moderate amounts of both |
| |
Top | Provides a moderate amount of |
| compression. This reduces loud sounds. |
Max | Provides full |
| Quiet sounds are raised to be audible and loud |
| passages are minimised to avoid disturbance, which |
| is useful for |
Mix | Bypasses dialogue normalisation and references the |
| sound pressure level in the studio where the material |
| was mixed. |
DSP presets
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