3Com CP-1 owner manual Programs Ambience

Page 27

The Programs:

Ambience

CP-1 Digital Audio Environment Processor

ROLLOFF mimics the absorption of the air in the hall and its initial value is therefore more pronounced (the rolloff begins at a lower frequency) the larger the space.

PANORAMA EFFECT adjusts the strength of the signal used to expand the stereo image outward from the front two speakers. It is only needed when side speakers are absent.

LISTENER POS compensates for the relative distance of the two main speakers from the prime listening area. It should be set for the value arrived at in the Panorama set-up procedure on page 11.

SPEAKER ANGLE compensates for differing distances between your front speakers. It affects only the Panorama Effect and is only needed when side speakers are absent. The Speaker Angle can be set to the value reached in the setup procedure on page 11, but the program may also work well at lower values.

The image expansion will be strongest at the one location in the room for which the program has been calibrated (See page 10). It will diminish somewhat as you move forward or back from that location and more rapidly as you move from side to side.

The Speech Detection circuit distinguishes monaural speech from other inputs. Whenever stereo signals are present, the right and left input chan- nels are used independently as inputs to the ambience synthesis. If there is a strong monaural speaking voice present at the same time, this component of the input is reduced while the stereo component is increased. If the input signal is pure monaural speech the input is almost entirely attenuated.

SPEECH DETECTION is a real benefit to some popular music (where spoken voice, such as rap, occurs along with music), stereo television, and early stereo movies. Any stereo material which was not carefully mixed for Surround is a good candidate for playing through Ambience with SPEECH DETECTION On.

The procedures for naming a new version of the program (SET PROGRAM NAME) and storing it in one of the User registers (MEMORIZE PROGRAM) are described on page 29.

Rolloff

Panorama Effect

Listener Position

Speaker Angle

Speech Detection

Set Program Name/ Memorize Program

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Contents Reverb Surround CP-1 Digital Audio Environment ProcessorOwners Manual Panorama AmbiencePrecautions Unpacking and InspectionAcknowledgements Safety Suggestions Table of Contents Introduction ControlsControls Indicators Front PanelSource Monitor Inputs Rear PanelRemote Control ProgramsPanorama Effect VolumeBank ParameterControls Indicators Connections to Other Equipment InstallationPrecautions Connection CalibrationConnecting the CP-1 in a Tape Monitor Loop Connection and CalibrationAudio Inputs Input Levels Setting Main Input Output LevelsFront Panel Adjustments Connection CalibrationBalancing Additional Channels Output LevelsCalibration of the Panorama Program Silence Noise Speaker Set-Up Configuration ConfigurationSpeaker Configurations For Film Speaker Set-Up ConfigurationSpeaker Set-Up Configuration For Music Speaker Set-Up Configuration Speaker Set-Up Configuration Using the 4 Programs Test ModeTo Load, Modify and Store Programs Program Parameters PanoramaListener Position Rear Level Rear DelayEffect Level Input BalanceRoom Shape Liveness AmbiencePrograms Ambience Reverb Treble Pre-DelayMid RT Bass RTProgram Parameters Mono Logic SurroundPro Logic Stereo LogicRear Effect Program Parameters contd Auto AzimuthBalance Bass BlendNaming a Register Using ProgramsRestoring Original Settings To Rename and Store a RegisterUsing Programs Troubleshooting TroubleshootingProblem Troubleshooting Restoring defaults Troubleshooting Theory Design Lateral SoundConcert Hall Acoustics Lateral Sound in your Listening Environment Theory and DesignAmbience Generation TheoryDesign Ambience ExtractionPanorama Program Theory Design Theory and Design Ambience Program Be the sound that comes from the sides Reverb Program Mono Logic Surround ProgramsPro Logic Pro Logic Decoding Dolby Surround DecodingCP-1 Decoder Stereo Logic Speaker Set-Ups for Pro Logic Theory and Design References Theory and Design Specifications Frequency ResponseOptional Equipment 06/00 Lexicon 070-06619 Rev
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