Meridian Audio Stereo System DSP presets, D i g i t a l s u r r o u n d, p r o c e s s i n g

DSP presets

Music on CD or radio

The following DSP presets add a surround dimension to stereo recordings, such as on audio CDs or FM radio.

Music extracts the mono and surround components of the original recording for the centre and surround speakers to give a spacious open sound field.

Trifield* is similar to Music but generates a centre-front signal that is completely integrated with the front stereo image, for a more stable, accurate, and focused stereo image. The image width is also adjustable.

Super produces a very good surround effect with many live recordings.

PLIIx Music and Music Logic are recommended for use with studio produced music, and provide different options for adjusting the sound field.

Multichannel movie soundtracks on DVD

The following presets are designed for use with multichannel movie soundtracks encoded using Dolby Digital, DTS, or AAC (on some models). Typically these are labelled 5.1 because they provide five full-range channels (three front and two rear) and one LFE (bass effects) channel.

Cinema* and THX decode the soundtrack to render the original six channels to your speaker layout. THX adds some additional signal processing to match the sound to typical home listening conditions.

PLIIx Mov6, PLIIx Mus6, THX Surround EX, THX Ultra2, and

THX Music create an additional pair of surround channels from the 5.1 channel soundtrack and are available if you have four surround speakers in your system. Use PLIIx Mus6 or THX Music for music.

Multichannel music recordings on DVD-Audio

The following presets are recommended for music recordings containing more than two channels:

Discrete* renders the source channels to your speaker layout with the ultimate precision and transparency.

Ambisonics is especially designed for multichannel recordings on DVD-Audio discs that use Ambisonic encoding.

Special presets for two-channel materials

Direct uses only the left and right speakers; compare this with the effect of surround processing using the other modes. Stereo* will use a subwoofer if it is present.

Ambisonics is specially designed for two-channel materials that are UHJ Ambisonically encoded, such as certain audio CDs. The encoded surround information is recovered and played back using all the loudspeakers in your system. In addition it will give impressive results with other two-channel material.

Two-channel movie soundtracks on DVD, video, and TV

Many movie soundtracks are Dolby Surround Encoded onto a two- channel stereo soundtrack.

The following DSP presets re-create the surround components from this type of material:

PLIIx Movie* is Dolby’s recommended choice for Dolby Surround Encoded material, and PLIIx THX provides a variant of this better suited to home listening.

TV Logic uses the same processing techniques as PLIIx Movie but with adjustable steering to give better results with TV material.

*The G91, when directly driving a surround system, includes Trifield, Discrete, Cinema, Stereo, and PLII Movie presets.

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