Room modes, Axial Tangential Radial | Dynaudio Air Series instruction

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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Image 36

Dynaudio Air Series manual Room modes, Axial Tangential Radial

Contents

Page Page Important Safety Instructions Voltage Line plug according to standardPage Table of Contents Quick Setup Reference Quick Setup Reference Operational Overview Main Display Setups Stereo SetupStereo Setup with mono Subs Stereo Setup with stereo Subs Digital Setup Analog SetupThis illustration shows how to connect a 5.1 digital setup This illustration shows how to connect a 5.1 analog setup This illustration shows how to connect a 5.3 Digital setup This illustration shows how to connect a 5.3 Analog setup This illustration shows how to connect a 6.1 Analog setup Dig/6 Master Stereo Setup With Chains on L & R Other Chained SetupsAnalog/Digital setup Analog connections Digital 192 kHz Digital Setup Introduction This ManualBreak Product Concept Remote Control Common FeaturesMaster Unit Slave & Sub Units Rear Panel Description Master Master Unit Analog I/OSlave/Sub Optional Digital I/O card AIR Display Overload IndicationEnter key Cursor UP/DOWN keys Overload Indication LED Press Enter to access the Select Mode Parameter DescriptionBasic operation in all menus Main Display Setup Menu SetupSet Monitor Task External Clock LFE channel note RecallStore Placing the Monitors Overview Close to wall / Wall On the bridge / ConsoleOther situations Checking the placement Phase checkingChecking by ear when listening to the signals In phase Evaluation Equalizing Next Calibrating Main Monitors Curves Interchannel calibrationAcoustic level calibration Curve Placing the Subwoofer Low frequency sweeps Evaluation Checking summing phase cancellation To CalibrateControlling standing waves Checking the Crosspoint Phase Phase IntroductionLFE Gain Polarity Acoustics Good acousticsReverberation time Sabines formula Absorbers DiffusersMembrane absorbers Absorbtion or diffusion ? Resonance absorbers Background Info Acoustics Standing Waves Room modes Axial Tangential Radial How to prohibit standing waves How does the standing waves influence the sound field? Acoustics Background Info Comb Filtering Or + Dip frequencies Rear wall cancellation Subwoofer Background Info Subwoofer Subwoofer & LFE Channel Background Info LFE ChannelCross-overs Low Pass LFE Gain Delaying 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 key AIR Soft Navigating AIR Soft Main Tools Preset List Network System Setup Calibrate AIR-Base Chained monitors Reset Procedures MiscellaneousGlobal Parameters Local Parameters Cables TC Link Standard Cat-5 cablesAES/EBU Standard cables Serial to Cat-5 cable AIR 6 & AIR 15 Master and Slave AIR 20 & AIR 25 Master and Slave AIR-Base-1 & AIR-Base-2 AIR Base Room & Distance General for all ProductsAIR Remote specs Delay in System & Error Messages ETC Error messages etc Certificate of Conformity Certificate Of ConformityAIR AIR-Base Preset List # Name