Ambisonics, Using dynamic range control

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D S P p r e s e t s

Ambisonics

The Ambisonics preset allows you to decode multi-channel sources which have been encoded in Ambisonics B format.

Ambisonics B format contains four independent channels of information to give a three-axis representation of the sound at the recording position. The signals are: mono sound pressure, left-right velocity component, front-back velocity component, and up-down velocity component.

Using dynamic range control

If the input format is Dolby Digital, the 5.1 Movie DSP presets provide an additional Compress parameter to allow you to take advantage of the dynamic range information provided in the Dolby Digital format to provide dynamic range control without the distortion involved in analogue methods.

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Meridian Audio G61 manual Ambisonics, Using dynamic range control

Contents

R I D I a N G S E R I E S G61 Digital Surround Controller Installation Guide To avoid interference Safety warningsRefer all servicing to approved service personnel To avoid overheating Contents Tel +1 404 344 Fax +1 404 346 Part no G61/1 Sales and service in the UKSales and service in the USA Copyright and acknowledgements Formats supported Smart Source featureIntroduction Inputs T r o d u c t i o n Specifications T r o d u c t i o n Unpacking Installing the digital surround controller To connect to this Use this connectorAudio inputs To connect to an analogue source eg TV tuner To connect to a digital source eg G07 24-bit CD Player #$ $6$ ! Player Use this output Audio outputs To connect the G61 to Meridian DSP loudspeakers $30 n -!.!2 Phono Lead M33 To connect an active subwoofer eg Meridian M1500 or M2500 3UBWOOFER $IGITALI3URROUND #ONTROLLER Screen Use this connector To connect to thisCommunications connections Auto To do this Configuring the digital surround controllerConfiguration Wizard To run the Configuration Wizard Type Reset settingsReset all settings? To reset the configuration Type Speakers Music Sub Logic Sub Types To change an option To configure the speakersSelect speakers One Option Values Description Speaker options Radio Use Configure sourcesTo configure a source Press Source When you have finished configuring sources Option Values Source options To change a setting Stage 4 Configuring other settingsOther settings To configure other settings Settings Page Introduction Using a Sound Pressure Level meterCalibrating the system Left Level +0.0dB To start the calibration procedureTo exit from the calibration procedure To complete the calibration procedure Distance Calibration testsLevels Left Distance Fine tuningLeft Phase Setting What it sounds like Left Size Speaker sizeSizes set to zero CD Xover 85Hz Using the Sine/Sub/Sens controlsSinewave sweep test Subwoofer crossover frequency Pause 80.0Hz CD Sine 80.0Hz88.5Hz 81.5Hz TV 2.0V Clip Setting up sourcesTo adjust the sensitivity of a source 4V Peak Layout Description DSP presetsDSP presets Speaker layouts Standard-rate audio, downsampled if necessary Parameter Range Default What it changesStandard parameters Parameter Options What it changes Music and Trifield DSP preset parametersMusic Trifield Super Ambisonics and Super DSP preset parametersAmbisonics PLIIx Music MusicLogic Surrounds Rear, Side, All PLIIx Movie and PLIIx THX DSP preset parametersStereo and Direct PLIIx Movie and PLIIx THX Parameter Options Mono DSP preset parametersTV Logic Mono Discrete Discrete and Cinema DSP preset parametersCinema 28dB to 0dB THX Using dynamic range control For example Defining your own presetsTo save the preset settings For example, you could change the name to To clear a user-defined presetStored Erratic or unexpected system behaviour TroubleshootingGeneral operating problems Standby light not lit Hum on analogue input Audio problemsRemote not working Unit is overheating Centre not working Audible hiss at high volume settingsThere is a hiss when starting DTS LaserDiscs or CDs Sound not clear Preset changes unexpectedly with a multichannel Source To clean the audio and video connections MaintenanceCleaning To clean the case, display panel, and keypad Guarantee Service and guaranteeService Calibration procedure 25 moving between tests 26 starting Academy DSP parameter 39 accessories Rear THX DSP parameters DSP presetsGuarantee +2+2 PLIIx Music Panorama Subwoofer crossover frequency 30 Super DSP preset Types 16 THX DSP preset 40 UHJ format THX Music DSP preset+2+2 DSP parameters