EAW Resolution Spécifications Page 60
- Page / 114
- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
EAW Smaart 6 Operation Manual Analysis Modes and Display Types
60
3. Click the Options/Units button above the Signal Level/SPL Readout again and
set the Weight and Speed settings for the readout to match those on the reference
SLM. Slow time integration (Speed) will make the steps that follow easier.
4. Click OK to set the change and exit the dialog.
5. Place your measurement microphone and SLM very close together at the same
distance from a loudspeaker then send a steady-state signal (e.g., sine wave or
pink noise) through the speaker.
6. Run Smaart and the SLM and note the SPL readings on both.
7. Subtract the Smaart reading from the SLM reading, then add 1 to the difference.
This is the new calibration offset.
8. Open the Amplitude Calibration dialog again (see Step 1) and enter the new
calibration offset found in step 7.
9. Run Smaart and the Reference SLM again and check the SPL readings. They
should now match each other very closely. If necessary, make additional
adjustments to the Calibration Offset value to make them even closer.
3.5 Capturing and Loading Measurement Data
It is possible to a capture and load static snapshots, called Reference Traces, of the live
traces in Spectrum and Frequency Response modes. We recommend storing these in a
folder specific to each project.
3.5.1 Capturing a Reference Trace
Click the Capture button at the top of the graph (or press the Spacebar). A modified Save
file dialog appears with a generic File Name and Description line filled in automatically.
The default description is highlighted so typing your text immediately replaces it. Also
note that the file name automatically changes to match your description as you type.
The dialog’s OK button is also selected by default so pressing the Enter key when
finished typing your description saves the file and displays your captured trace.
NOTE: If you are in n a rush, accept the default comment/file name by pressing the
Enter key immediately when the dialog opens.
To use a file name that does not match the trace description, highlight the File Name
field and type a new name. The matching function works in one direction and only
when the file name and description are already identical.
- USER GUIDE 1
- Table of Contents 3
- List of Figures 7
- Chapter 1: Getting Started 9
- 1.1.2 Measurement Microphone 11
- 1.1.3 Microphone Preamplifier 11
- 1.2.1 First Time Installation 12
- 1.3 Smaart 6 Signal I/O 14
- 1.4.1 The Menu Bar 17
- 1.4.2 The Plot Area 17
- 1.4.3 Cursor Readout 17
- 1.4.4 Start/Stop Buttons 17
- 1.4.6 Display Controls 18
- 1.4.8 Signal Generator 19
- 1.4.9 Internal Delay Control 20
- 1.5 How to use this Manual 21
- 2.1 Concepts 23
- 2.1.2 Fast Fourier Transform 24
- 2.1.3 Averaging 25
- 2.1.4 Sampling Rate 25
- 2.1.5 Frequency Resolution 26
- 2.1.6 Pink and White Noise 27
- 2.1.7 Data Window Functions 28
- 2.1.8 Impulse Response 29
- 2.1.9 The Transfer Function 29
- 2.1.10 Coherence 30
- 2.1.11 Signal Alignment 30
- 2.2 Glossary of Terms 31
- 2.3 Selected Bibliography 34
- 3.1 Spectrum Measurements 38
- 3.1.2 Spectrograph 40
- 3.2.3 The Magnitude Display 45
- 3.2.4 The Phase Display 46
- 3.2.5 Time Windowing 46
- 3.2.6 Averaging and Smoothing 47
- 3.2.8 Magnitude Thresholding 51
- 3.3.3 Automatic Delay Locator 55
- 3.4 SPL Measurements 56
- 3.4.2 Calibrating to SPL 57
- Figure 3-14 Legend dialog 61
- 3.6 Internal Delay 63
- 3.7 Internal Signal Generator 63
- 3.8 Weighting Curves 65
- 3.9 External Device Control 66
- 3.10 The Locked Cursor 68
- 3.11 Smaart 6 Screen Capture 69
- Chapter 4: Applications 71
- Measurement Signal 75
- Reference Signal 75
- Computer 75
- Line Out 75
- Equalizer 75
- 4.3 Measuring a Loudspeaker 77
- 4.3.1 Adjust Signal Levels 78
- Step 1: Evaluation Listening 85
- Step 4: Compare Positions 86
- Step 6: Critical listening 86
- Step 7: Stability Testing 87
- Chapter 5: Smaart 6 Commands 91
- 5.3 Options Menu 93
- 5.3.2 Frequency Response 95
- 5.3.3 IR Analysis 97
- 5.3.4 Audio I/O 98
- 5.3.5 Delay 99
- 5.3.6 Zoom 101
- 5.3.7 Instantaneous 101
- 5.4 Help Menu 102
- 5.5 Keyboard Shortcuts 103
- External Device Control 104
- Options Menu Shortcuts 104
- Chapter 6: Troubleshooting 105
- 6.3 Sound Hardware Problems 107
- 6.4 Performance Issues 108
- 6.5 Font and Display Problems 108
- EAW Smaart 6 Operation Manual 111
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