CLIOwin 6.5 PCI User's Manual - Audiomatica Srl

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110.0 CLIO 7.50 dBSPL ms 100.0 6.00 90.0 4.50 80.0 3.00 70.0 1.50 60.0 0.00 20 100 1k Hz 10k 20k Figure 10.25 It was obtained selecting Excess in the Setting Dialog and clicking on the Group Delay button.This graph represents the distance of the sound source from the microphone vs. frequency. As long as the distance is constant the system is minimum phase and we are in presence of a well defined acoustic centre. Recall from previous paragraphs that we have reliable data down to 200Hz because of the time windows. As we deal with a tweeter we will consider the 2k-20k frequency range where the marker reads a constant 2.01ms. We will use this value to operate a time shift that removes the time of sound fly. This is accomplished from the Processing Tools Dialog, selecting Time shift and typing the value we found as in Fig.10.26. Figure 10.26 Clicking Ok we can finally display the processed phase, minimum phase and magnitude response of our device in Fig.10.27. We used the term "processed phase" here and this is not casual. 98 Chapter 10 - MLS
110.0 CLIO 180.0 dBSPL Deg 100.0 108.0 90.0 36.0 80.0 -36.0 70.0 -108.0 60.0 -180.0 20 100 1k Hz 10k 20k Figure 10.27 To terminate this difficult paragraph we will summarise what we did with some comments. Measuring acoustic phase response is often far from a "press a button and get it" procedure. We went trough several phase plots, all looking different but, this is an important point, all correct. It is common to identify the processed phase as the true one only because it looks better. It is important to stress that the true phase is that of Figures 10.18 and 10.19. CLIO, intended as a computer based instrument, can, as we will see later, easily calculate the summed response of woofer and tweeter after their are taken separately but with the same microphone position. What we did with our complicated procedure was to obtain a response as if the microphone would have been exactly in the acoustic centre of the driver. The most obvious application is to furnish data to cross-over CAD. Chapter 10 - MLS 99
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ELECTRICAL & ACOUSTICAL TESTS User'
Page 3 and 4:
CONTENTS 1 INTRODUCTION ...........
Page 5 and 6:
8.5.1 MEASURING AN INDUCTOR .......
Page 9:
1 INTRODUCTION 1.1 ABOUT THIS MANUA
Page 12 and 13:
12 Chapter 1 - Introduction
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2.1 THE PB-4281 PC BOARD AND SC-01
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2.2.3 THE MIC-01 (OR MIC-02) FREQUE
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2.4 THE QCBOX MODEL 4 AMPLIFIER & S
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Figure 3.1 2) 2 x Stereo mini jack
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3.3 HARDWARE REGISTRATION WITH WIND
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3.3.2 HARDWARE REGISTRATION UNDER W
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3.3.3 HARDWARE REGISTRATION UNDER W
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Figure 3.21 Let's now verify that t
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3.4 SOFTWARE INSTALLATION This para
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3.6 RUNNING CLIOWIN FOR THE FIRST T
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3.7.1 CALIBRATION VALIDATION Figure
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36 Chapter 3 - Installation
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38 Chapter 4 - Troubleshooting CLIO
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5.3 CLIOWIN DESKTOP The CLIOwin des
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It is possible to generate the foll
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Fig.5.5 Microphone sensitivity dial
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5.5.2 CONTROLLING A TURNTABLE Fig.5
Page 48 and 49: 5.6.2 ANALYSIS MENU The Analysis me
Page 50 and 51: H Enables the Hold function. Equiva
Page 52 and 53: CTRL+P Swithces on and off the micr
Page 54 and 55: 5.7.2 CONNECTING A MICROPHONE For a
Page 56 and 57: 56 Chapter 5 - CLIOwin basics
Page 58 and 59: When you find a CLIOwin data file i
Page 60 and 61: Enters the Notes dialog where it is
Page 62 and 63: 6.3.5 CALIBRATION File > Calibratio
Page 64 and 65: 6.3.7 STARTUP OPTIONS AND GLOBAL SE
Page 66 and 67: 7.3 BUTTONS AND CHECKBOXES Moves (s
Page 68 and 69: 7.6 THE MLS TIME DOMAIN DISPLAY Whe
Page 70 and 71: 8.2.1 TOOLBAR BUTTONS Starts the me
Page 72 and 73: This operating mode is very useful;
Page 74 and 75: Figure 8.7 With the Multi-meter run
Page 76 and 77: 76 Chapter 8 - Multi-Meter
Page 78 and 79: 9.2.1 TOOLBAR BUTTONS Starts an FFT
Page 80 and 81: 9.4 FFT AND RTA OPERATION The FFT a
Page 82 and 83: 9.5 AVERAGING Averaging plays a ver
Page 84 and 85: 9.6 TIME DATA DISPLAY (OSCILLOSCOPE
Page 86 and 87: 10.2.1 TOOLBAR BUTTONS Starts an ML
Page 88 and 89: 10.2.4 MLS POST-PROCESSING TOOLS Lo
Page 90 and 91: 10.4 MEASURING FREQUENCY RESPONSE I
Page 92 and 93: 150.0 CLIO 180.0 150.0 CLIO 180.0 O
Page 94 and 95: MLS Menu, select dBSPL as Y scale u
Page 96 and 97: 10.4.4 PHASE & GROUP DELAY We used
Page 100 and 101: 10.5 OTHER TIME DOMAIN INFORMATION
Page 102 and 103: utton. Any process you execute can
Page 104 and 105: 104 Chapter 10 - MLS
Page 106 and 107: 11.2.1 TOOLBAR BUTTONS Starts the s
Page 108 and 109: Stepped is also not checked. Typica
Page 110 and 111: 11.3 A BRIEF DESCRIPTION ON SETTING
Page 112 and 113: 11.3.3 GATING Enabling Gating allow
Page 114 and 115: 11.4 DISTORTION AND SETTINGS Sinuso
Page 116 and 117: Finally Fig.11.12 shows the distort
Page 118 and 119: 12.3 WATERFALL BASICS Figure 12.2 W
Page 120 and 121: 12.4 MAKING A CUMULATIVE SPECTRAL D
Page 122 and 123: Let's now change the CSD aspect aga
Page 124 and 125: Figure 12.11 12.5.3 TAKING THE MEAS
Page 126 and 127: Figure 12.17 The final result for o
Page 128 and 129: If you are novice in using CLIO or
Page 130 and 131: -10.0 CLIO dBV -30.0 -50.0 -70.0 -9
Page 132 and 133: 13.4 I SENSE Requires Audiomatica C
Page 134 and 135: Figure 13.12 Lets proceed now with
Page 136 and 137: The figure shows us we are going to
Page 138 and 139: 13.7 THIELE & SMALL PARAMETERS 13.7
Page 140 and 141: L 1kHz L 10kHz Inductance at 10kHz
Page 142 and 143: Now we can save our complete result
Page 144: [19] M.O. Hawksford, “Digital Sig
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CLIOwin 6.5 PCI User's Manual - Audiomatica Srl

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