Pioneer VSX-91TXH manual How to use Professional Acoustic Calibration EQ

Page 40

07The System Setup menu

How to use Professional Acoustic Calibration EQ

If you find that lower frequencies seem overly reverberant in your listening room (i.e. it sounds ‘boomy’), or that different channels seem to exhibit different reverb characteristics, select Aco Cal EQ Pro. (or ALL) for the Auto Mode setting in Automatic MCACC (Expert) on page 34 to calibrate the room automatically. This should provide a balanced calibration that suits the characteristics of your listening room.

If you still aren’t satisfied with the results, the manual Advanced EQ setup (below) provides a more customized calibration of your system using the direct sound of the speakers. This is done with the help of a graphical output that can be displayed on-screen, or using a computer (with software available from Pioneer — see Connecting a PC for Advanced MCACC output on page 58).

How to interpret the graphical output

The graph shows decibels on the vertical axis and time (in milliseconds) on the horizontal axis. A straight line indicates a flat-response room (no reverb), whereas a sloping line indicates the presence of reverberation when outputting test tones. The sloping line will eventually flatten out when the reverberant sound stabilizes (this usually takes about 100 ms or so).

By analyzing the graph, you should be able to see how your room is responding to certain frequencies. Differences in channel level and speaker distance are taken into account automatically (compensation is provided for comparison purposes), and the frequency measurements can be examined both with and without

the equalization performed by this receiver.1

Setting Professional Acoustic Calibration EQ according to your room characteristics

Using the manual setup, you can set the time period at which the frequency response is analyzed, pinpointing the time that is best for system calibration with your particular room characteristics.

The graph below shows the difference between standard acoustic calibration and professional calibration (the gray circles represent the point at which the microphone captures the sound for frequency analysis).

Level

 

 

 

 

 

 

Test tone

 

Acoustic Cal. EQ Pro

Standard Acoustic Cal.

 

 

calibration range

EQ calibration range

 

 

 

 

Time

0

80

160

(in msec.)

 

As soon as audio is output from your speaker system, it is influenced by room characteristics, such as walls, furniture, and the dimensions of the room. The sooner the frequency analysis, the less it is influenced by the room. We recommend an earlier time setting of 20 ms to 40 ms to compensate for two major factors that will influence the sound of most rooms:

•Reverberance of high vs. low frequencies – Depending on your room, you may find that lower frequencies seem overly reverberant compared to higher frequencies (i.e. your room sounds ‘boomy’). This may result in a skewed frequency analysis if the measurement is done too late.

Level

 

 

Low

 

 

frequencies

 

 

 

 

High

 

 

 

 

frequencies

 

 

Acoustic Cal. EQ Pro

Standard Acoustic Cal.

 

 

 

 

calibration range

EQ calibration range

 

 

 

 

 

 

 

Time

0

80

160

 

(in msec.)

 

 

•Reverb characteristics for different channels – Reverb characteristics can be somewhat different for each channel. Since this difference increases as the sound is influenced by the various room characteristics, it is often better to capture a frequency analysis early on for smoother mixing of channel frequencies/sounds.

Level

 

 

Left

 

 

surround

 

 

 

 

Right

 

 

 

 

Surround

 

 

Acoustic Cal. EQ Pro

Standard Acoustic Cal.

 

 

 

 

calibration range

EQ calibration range

 

 

 

 

 

 

 

Time

0

80

160

 

(in msec.)

 

 

If your room isn’t affected by the factors above, it is often not necessary to make a 20 ms to 40 ms setting. Later time settings may provide a more detailed sound experience with your speaker system. It is best to try and see what works best for your particular room.

Note that changing the room (for example, moving furniture or paintings) will affect the calibration results. In such cases, you should recalibrate your system.

Note

1Note that due to an effect known as ‘group delay’, lower frequencies will take longer to be generated than higher frequencies (this is most obvious when comparing the frequencies at 0 ms). This initial slope is not a problem (i.e. excessive reverb) with your listening room.

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Contents VSX-91TXH Federal Communications Commission Declaration of Conformity Model NumberPhone Keep in a Secure AREA. this is for Your SecurityImportant Safety Instructions Contents Other Settings Using other functionsOther connections Controlling the rest of your systemBefore you start FeaturesBefore you start Chapter Installing the receiver Before you startChecking what’s in the box VentilationAutomatically setting up for surround sound Auto Mcacc Minute guide02 5 minute guide Chapter Introduction to home theaterMinute guide EnterBetter sound using Phase Control Problems when using the Auto Mcacc Setup02 5 minute guide Playing a sourceConnecting your equipment Chapter Connecting your equipmentRear panel When making cable connections Connecting your equipmentAbout the video converter Connecting your equipment Connecting your TV and DVD player Connecting a satellite/cable receiver or other set-top boxConnect using a standard video cable or an S-video cable 342Using the component video jacks Connecting a DVD/HDD recorder, VCR and other video sourcesDVR, VCR, etc Connecting digital audio sources Use a three-way component video cableConnecting analog audio sources Connecting a component to the front panel inputsAbout the WMA9 Pro decoder Tape deck, etcConnecting your equipment Installing your speaker system Connecting the speakersBare wire connections Placing the speakersBanana plug connections 10 mm 3/8Connecting antennas THX speaker system setupConnecting external antennas Plug the power cord into a power outletPlugging in the receiver AC outletControls and displays Chapter Controls and displaysFront panel Operating range of remote control unit Controls and displaysControls and displays Display Controls and displays Remote control RECEIVERInput Select SelectStatus Multi OPEShift SOURCEListening to your system Listening to your system ChapterAuto playback Listening in surround sound Standard surround soundUsing the Home THX modes Using the Advanced surround effectsTHX Games Mode Listening to your systemUsing Front Stage Surround Advance Using Stream DirectListening in stereo Stereo See Listening in stereo above for more on thisListening to your system Selecting Mcacc presets Choosing the input signalUsing surround back channel processing While listening to a source, press McaccUsing the Virtual Surround Back mode Listening to your system Using Midnight and Loudness Using the Sound RetrieverUsing the tone controls Press Tone to select the frequency you want to adjustUsing the tuner Using the tuner ChapterSaving station presets Listening to the radioUsing the tuner Naming station presetsListening to station presets AbcdefghijklmnopqrstuvwxyzSystem Setup menu System Setup menu ChapterMaking receiver settings from the System Setup menu Select the setting you want to adjustSystem Setup menu McaccSurround back speaker setting Default setting Normal SBManual Mcacc setup Fine Channel LevelSelect ‘Fine SP Distance’ from the Manual Mcacc setup menu Adjust the level of the left channelWhen youre finished, press Return Fine Speaker DistanceAcoustic Calibration EQ Standing WaveProfessional Acoustic Calibration EQ How to use Professional Acoustic Calibration EQ How to interpret the graphical outputSelect ‘EQ Professional’ then press Enter Using Professional Acoustic Calibration EQSelect an option and press Enter Checking Mcacc preset data Copying Mcacc preset dataSelect ‘Data Management’ from the System Setup menu Select the setting you want to checkManual speaker setup Speaker SettingRenaming Mcacc presets Clearing Mcacc presetsSelect ‘Speaker Setting’ from the Manual SP Setup menu Select ‘Channel Level’ from the Manual SP Setup menuSelect a setup option Confirm your selected setup optionSpeaker Distance THX Audio SettingCurve SBL-SBR Other connections Connecting an iPodOther connections Chapter Using XM Radio Connecting your XM Radio receiverWatching photos and video content Other connectionsUsing XM HD Surround Saving channel presetsListening to XM Radio Selecting channels and browsing by genreUsing Sirius Radio Using the XM MenuConnecting your Sirius Connect Tuner Listening to channel presetsUsing the Sirius Menu Press Sirius SHIFT+TV to switch to the Sirius inputSirius Menu provides additional Sirius Radio features Listening to Sirius RadioPassword Set Set the parental lock password Connecting using HdmiAbout Hdmi Connecting the multichannel analog inputs Speaker B setupSwitching the speaker system Selecting the multichannel analog inputsBi-wiring your speakers Connecting additional amplifiersBi-amping your front speakers Connect your speakers as shown belowBasic MULTI-ZONE setup Surround Back System MULTI-ZONE setupMULTI-ZONE listening Making MULTI-ZONE connectionsUsing the MULTI-ZONE controls Connecting an IR receiverMULTI-ZONE remote controls Using this receiver with a Pioneer plasma display Switching components on and off using the 12 volt triggerPioneer plasma display Using the SR+ mode with a Pioneer plasma display Connecting a PC for Advanced Mcacc outputPioneer plasma DisplayAdvanced Mcacc output using your PC Other Settings Other Settings ChapterInput Setup menu Input function default and possible settingsOther Settings Other Setup menuMulti Zone Setup SR+ Setup for Pioneer plasma displaysSelect ‘OSD Adjustment’ from the Other Setup menu OSD AdjustmentYou will return to the Other Setup menu Using other functions Using other functions ChapterSetting the AV options Setting What it does OptionsUsing other functions Making an audio or a video recordingSelect the source you want to record Prepare the recorderUsing the sleep timer Switching the speaker impedanceChecking your system settings Press Status to check the system settingsUsing other functions Resetting the system Default system settingsPress System Setup to confirm Setting DefaultSetting the remote to control other components Selecting preset codes directlyProgramming signals from other remote controls Controlling the rest of your systemErasing one of the remote control button settings Resetting the remote control presetsConfirming preset codes Controlling the rest of your systemRenaming input source names Direct function Multi Operation and System OffProgramming a multi-operation or a shutdown sequence Use / to select Direct F then press EnterUsing multi operations Using System offSelect the button for the command you want to input Press Multi OPEControls for other components Controlling the rest of your system Controls for TVsButtons Function Components Operating other Pioneer components with this unit’s sensor Decide which component you want to use the remote sensorTroubleshooting PowerAdditional information Additional information ChapterSymptomRemedy Other audio problemsAdditional information Settings VideoProfessional Calibration EQ graphical output DisplayRemote control Operating range of remote control unit onSymptom Cause Action IPod messagesXM radio messages Sirius radio messagesAdditional information Surround sound formats DolbyAbout THX Windows MediaTM Audio 9 ProfessionalTHX Select2 Cinema mode THX Games ModeTHX Cinema processing Re-EqualizationInput signal format Standard Stereo 2 channel signal formatsAuto Surround Multichannel signal formats PCMAuto Surround Back speakers Input signal format Direct Pure DirectAdditional information Specifications Cleaning the unitOnce you have established a comfortable sound level To establish a safe levelDecibel Level Example Pioneer Corporation
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