Dynaudio Air Series manual Room modes, Axial Tangential Radial

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ACOUSTICS - BACKGROUND INFO

Room modes

These special frequencies are also called room modes. Standing waves between parallel walls are called axial modes. Other modes exist. For instance tangential and radial modes. (See the illustration). Normally the axial modes are the strongest.

Axial

Tangential

Radial

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Contents Page Page Important Safety Instructions Voltage Line plug according to standardPage Table of Contents Quick Setup Reference Quick Setup Reference Operational Overview Main DisplaySetups Stereo SetupStereo Setup with mono Subs Stereo Setup with stereo SubsDigital Setup Analog SetupThis illustration shows how to connect a 5.1 digital setup This illustration shows how to connect a 5.1 analog setupThis illustration shows how to connect a 5.3 Digital setup This illustration shows how to connect a 5.3 Analog setupThis illustration shows how to connect a 6.1 Analog setup Dig/6 MasterStereo Setup With Chains on L & R Other Chained SetupsAnalog/Digital setup Analog connectionsDigital 192 kHz Digital Setup Introduction This ManualBreak Product ConceptRemote Control Common FeaturesMaster Unit Slave & Sub UnitsRear Panel Description Master Master Unit Analog I/OSlave/Sub Optional Digital I/O cardAIR Display Overload IndicationEnter key Cursor UP/DOWN keys Overload Indication LEDPress Enter to access the Select Mode Parameter DescriptionBasic operation in all menus Main DisplaySetup Menu SetupSet Monitor Task External ClockLFE channel note RecallStore Placing the Monitors OverviewClose to wall / Wall On the bridge / ConsoleOther situations Checking the placement Phase checkingChecking by ear when listening to the signals In phase EvaluationEqualizing NextCalibrating Main Monitors Curves Interchannel calibrationAcoustic level calibration CurvePlacing the Subwoofer Low frequency sweeps EvaluationChecking summing phase cancellation To CalibrateControlling standing waves Checking the CrosspointPhase Phase IntroductionLFE Gain PolarityAcoustics Good acousticsReverberation time Sabines formula Absorbers DiffusersMembrane absorbers Absorbtion or diffusion ? Resonance absorbersBackground Info Acoustics Standing WavesRoom modes Axial Tangential RadialHow to prohibit standing waves How does the standing waves influence the sound field?Acoustics Background Info Comb Filtering Or + Dip frequenciesRear wall cancellation Subwoofer Background Info SubwooferSubwoofer & LFE Channel Background Info LFE ChannelCross-overs Low Pass LFE GainDelaying Monitors LINE-UP & Calibration Acoustic summation of audio signalsCinema setup How to measure the sound pressure? LINE-UP & Calibration Background InfoCalibration of 5.1 in an ITU-775 arrangement Remote Control Features AIR RemoteIntroduction Preset 1/3 and 2/4 keys Volume potentiometerREF Level 1-3 keys Shift keyAIR Soft Navigating AIR SoftMain ToolsPreset List NetworkSystem Setup Calibrate AIR-Base Chained monitorsReset Procedures MiscellaneousGlobal Parameters Local ParametersCables TC Link Standard Cat-5 cablesAES/EBU Standard cables Serial to Cat-5 cableAIR 6 & AIR 15 Master and Slave AIR 20 & AIR 25 Master and SlaveAIR-Base-1 & AIR-Base-2 AIR BaseRoom & Distance General for all ProductsAIR Remote specs Delay in System & Error Messages ETC Error messages etcCertificate of Conformity Certificate Of ConformityAIR AIR-Base Preset List # Name