888 Digital 565 manual Logic DSP presets, Pro Logic

Page 38

Logic DSP presets

DSP presets

The digital surround processor provides five DSP presets specifically designed for reproducing stereo film soundtracks. Three of these presets, Pro Logic, THX Cinema, and TV Logic, are designed for Dolby Surround encoded material. Most films, and many TV programmes and series, are encoded using Dolby Surround, and it is increasingly being used to encode music.

The 565 Digital Surround Processor follows the Meridian philosophy of performing all the signal processing digitally, and the Dolby Surround decoding operates purely in a digital mode. This gives it a far higher performance and a better subjective sound than other analogue-based decoders.

The remaining two Logic presets, Mono and Academy, are designed for films with mono soundtracks.

Pro Logic

Dolby Surround is an encoding system based on a phase- amplitude matrix whose output can be decoded by a very simple passive matrix. Such a decoder gives quite a poor separation.

The Pro Logic system uses psychoacoustically optimised directional enhancement to increase the separation in both left- right and front-back directions. It does this by continuously calculating the position and degree of the currently-dominant sound. This sound is then steered to a greater or lesser extent to that position in the arriving sound. This technique is very successful for cinema and other dramatic programmes.

Further refinements in the Pro Logic decoder include the filtering and delay of the rear surround signal to reduce any tendency for the surround signals to divert attention or become dominant.

The Pro Logic decoder also uses a modified digital Dolby noise- reduction process in the surround signal. Since Dolby Surround material is encoded with this in mind the noise-reduction is permanently operating in this mode.

34

Page 37 Page 39
Image 38
Page 37 Page 39
Contents Meridian 565 Digital Surround Processor Preface Contents DSP presets Service and guaranteeIntroduction Series communications Professional featuresMeridian 500 Series Five-channel surround system Sample configurationsThree-channel stereo system THX system Meridian Analogue Theatre DSP6000C Complete multimedia surround system An AC-3 LaserDisc systemSpecification and accessories SpecificationAvailable accessories PCM, 7.1, and MLP versionsDSP presets Multi-channel digital sourcesMulti-channel sources encoded onto two channels Mpeg SurroundConventional stereo sources TV LogicSpecial DSP presets TrifieldUsing the digital surround processor Front panel To switch on from standby Switching on and offTo switch to standby Selecting a source To select a sourceTo change the volume Adjusting the volumeTo restore the sound To mute the soundChanging the DSP preset To change the DSP presetChanging the display To change the displayUsing the digital surround processor Customising the digital surround processor To unlock the menus Locking and unlocking the menusTo lock the menus To change a DSP parameter Using a Meridian DSP LoudspeakerChanging the DSP parameters Standard parametersStandard parameters OSDTo change the treble Changing treble, bass, or phaseTo change the absolute phase To change the bassChanging the listening position To move the listening position to the left or rightTo change the relative level of the centre speaker To change the relative delay of the centre speakerChanging the integration of the centre To change the relative delay of the rear or side speakers Changing the spaciousness of the soundTo change the position of the on-screen display To adjust the lip syncChanging the lip sync and on-screen display Changing the DSP preset for a source To change the DSP preset for a sourceDefining your own presets To save the preset settingsTo clear a user-defined preset DSP presets Logic DSP presets Pro LogicTV Logic Pro Logic and THX Cinema DSP preset parametersTHX Cinema Mono and Academy TV Logic DSP preset parametersMono and Academy DSP preset parameters Trifield Music DSP presetsMusic Music and Trifield DSP preset parameters Ambisonic Super StereoMusic Logic Ambisonic and Super Stereo DSP preset parametersMusic Logic DSP preset parameters DTS MusicMLP MLP version only Mpeg MusicStereo and Direct Dolby Digital THX, DTS THX, Movie DSP presetsDolby Digital Movie DSP preset parameters Using dynamic range controlUsing peak-level limiting Service and guarantee Service GuaranteeGlossary Max SPL Mono surrounds LayoutLimit Mono sub LFE subSteered surrounds PresetSource Surround Type Index DSP parametersListening position, moving to Meridian Digital Theatre Selecting a source Sides DSP parameter Sources Processor
Related manuals
Manual 66 pages 6.77 Kb

565, 565 specifications

The Meridian Audio 565 is a landmark in the realm of high-fidelity audio processing. Launched as a digital surround sound processor, it has captivated audiophiles and home theater enthusiasts with its innovative technology and exceptional sound quality. The 565 serves as a definitive solution for those looking to enhance their audio experience, boasting a range of features that solidify its status in the industry.

One of the main features of the 565 is its advanced digital signal processing capabilities. It utilizes Meridian’s proprietary Apodizing filter technology, which significantly improves frequency response and effectively reduces time-domain distortion. This technology enables precise sound reproduction, allowing listeners to experience their favorite music and movies as intended by the creators.

The Meridian 565 is equipped with multiple inputs and outputs, supporting various audio formats. It features both balanced and unbalanced audio connections, ensuring compatibility with a wide range of audio equipment. This flexibility allows users to seamlessly integrate the 565 into their existing audio systems, whether they are aiming for stereo or surround sound configurations. The device supports multi-channel audio formats, giving users the opportunity to experience immersive soundscapes.

Another noteworthy characteristic of the 565 is its user-friendly interface. It comes with a well-organized remote control and an intuitive on-screen display that simplify the process of configuring and operating the device. Users can easily adjust settings, switch between different input sources, or fine-tune audio parameters to suit their personal preferences.

The build quality of the Meridian 565 is also commendable. Typically housed in a robust chassis, the device is designed to minimize interference from external electromagnetic sources, thus preserving audio integrity. This attention to detail in construction reiterates Meridian’s commitment to delivering high-performance audio solutions.

In conclusion, the Meridian Audio 565 is an exceptional digital surround sound processor that combines advanced technology with user-friendly features. Its unique technologies, such as Apodizing filtering, flexible connectivity options, and robust build quality, make it a top choice for audiophiles and home theater enthusiasts alike. Whether for casual listening or an immersive cinematic experience, the 565 stands as a testament to Meridian's dedication to excellence in audio engineering.
Top Page Image Contents