Meridian Audio Stereo System manual LFE sub, Mono sub, Mono surrounds, Room correction, Surround

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G l o s s a r y

LFE

The Low Frequency Effects (LFE) channel which enhances movie soundtracks with extreme bass sound effects up to 200Hz. It is band-limited to 120Hz in a Dolby Digital system.

LFE sub

A subwoofer which plays the full LFE signal in Dolby Digital, DTS, and MPEG presets.

MHR

Meridian High Resolution, a proprietary secure encoding format using encryption and anti-copy methods that allows secure transfer of audio streams between elements of a Meridian-only system for the purpose of playback only. It provides a secure copyright protection environment and has the very important benefit of lowering jitter and improving sound quality on all material.

MLP

Meridian Lossless Packing, an audio format that increases the amount of information that can be recorded without any loss of quality. The reference format for DVD-A material.

Mono sub

A subwoofer which handles all the bass for the system. A THX standard subwoofer has a crossover at 80Hz.

Mono surrounds

Surrounds which have a common signal steered to them. This may then be decorrelated by the THX process to give a more spacious sound.

MPEG

MPEG Surround is a digital encoding system developed by the Motion Picture Expert Group. Like Dolby Digital it provides five full-frequency-range channels (left, centre, right, left surround, right surround) and an additional Low Frequency Effects (LFE) channel.

MSR+

The Meridian System Remote.

OSD

On-screen display, which displays information on status or setup on the video output of a DVD player.

PCM

Pulse Code Modulation, the method used to encode music digitally, as used on CDs and DVDs.

Room correction

A system that uses digital signal processing to analyse the room response and then build a set of filters to compensate for acoustic deficiencies.

Soft keys

The five keys on the front panel of G Series products that change function according to the labels on the bottom line of the display.

Source

An input to the system, such as CD or TV. The Meridian G Series provides up to 12 named sources, corresponding to the names of the 12 source keys on the MSR+.

Steered surrounds

Surrounds which have individual signals steered to them by the digital surround controller’s DSP preset.

Surround

A sound reproducing system with more than two loudspeakers, and usually with speakers behind or to the side of the listener.

THX

Additional processing that follows Dolby Pro Logic Surround decoding to give a more faithful reproduction of cinema sound in the home.

Trifield

A DSP preset designed to extract centre and surround signals from a conventional two-channel stereo source.