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Related Manuals for BRUEL & KJAER 4100
Summary of Contents for BRUEL & KJAER 4100
- Page 1 Sound Quality Head and Torso Simulator Type 4100 & 4100 D English BE 1391 – 13...
- Page 2 Sound Quality Head and Torso Simulator Type 4100, 4100 D Revision September 2001 Brüel & Kjær Sound Quality Head and Torso Simulator Type 4100, 4100 D BE 1391 – 13 User Manual...
- Page 3 All rights reserved. No part of this publication may be reproduced or distributed in any form or by any means without prior consent in writing from Brüel & Kjær Sound & Vibration Meas- urement A/S, Nærum, Denmark. Sound Quality Head and Torso Simulator Type 4100, 4100 D Brüel & Kjær User Manual...
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Page 4: Table Of Contents
Specifications – Type 4100 ..................... 24 Specifications – Type 4100 D ..................24 Common Specifications – Types 4100, 4100 D............... 24 Ordering Information..................... 24 Index ............................25 BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... - Page 5 Brüel & Kjær Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual...
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Page 6: Introduction
Chapter 1 Introduction BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... -
Page 7: Introduction
Type 4100 D includes DeltaTron Preamplifiers Type 2671. Both types use high sensitivity, low noise, ½″ Falcon Micro- phones. Throughout this manual, we refer to both types as Type 4100 or “the simula- tor”, except where the difference is specifically indicated. -
Page 8: Systems For Sound Quality Testing
However, to avoid bias errors in this process, it is important that the acoustic prop- erties of the recording and playback are as accurate as possible. Type 4100 therefore has a frequency response to sounds coming from all directions which closely approx- imates the direction-dependent human response, and inter-aural time differences very close to those of the average person. - Page 9 Microphone/transducer Preamplifier DAT recorder In the case of Type 4100, the microphone and preamplifier are built into the head and torso casing. The simulator is placed in the test environment (automobile, aeroplane, machine shop) in a position which simulates the position of a person in that situation, and the sounds around it are recorded using a DAT recorder.
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Page 10: How To Use This Manual
How to Use this Manual This manual will help you set up and use the Sound Quality Head and Torso Simula- tor Type 4100, as well as provide you with information about using it in connection with larger sound quality systems. - Page 11 Sound Quality Head and Torso Simulator Type 4100, 4100 D Brüel & Kjær User Manual...
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Page 12: Getting Started
Chapter 2 Getting Started BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... -
Page 13: Inventory
Torso Microphone/preamplifier assemblies Connection cables Silicone pinnae Absorptive cover for the torso (Fig.2.3) Fig.2.1 The main components of the Sound Quality Head and Torso Simulator Sound Quality Head and Torso Simulator Type 4100, 4100 D Brüel & Kjær User Manual... -
Page 14: Accessories
An ear-shaped piece of silicone (the pinna), is fitted around the microphone. Fig.2.2 Cross-section showing the construction of the ear simulator Angle piece Microphone Pinna Preamplifier 940368e BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... -
Page 15: Head, Torso And Neck Ring
The simulator comes with an absorptive cover for the torso (see Fig.2.3). This ad- justs reflections and diffraction from the upper part of the torso to optimize the directivity of the entire simulator. Sound Quality Head and Torso Simulator Type 4100, 4100 D Brüel & Kjær User Manual... -
Page 16: Assembly And Dismantling
4. Place the head back on the torso (90° from forward) and turn it so it once again is faces forwards (aligned with the mark on the neck ring, Fig.2.7) BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... -
Page 17: Changing Preamplifier Cables
The mark on the neck ring is to ensure that the head faces forwards. Sound Quality Head and Torso Simulator Type 4100, 4100 D Brüel & Kjær User Manual... - Page 18 The handle UA 1052 fitted to the torso. The bottom end-piece cover has not been fitted so that the screw and the end-piece can be seen Fig.2.7 Scaling and mounting guides (left), headphone and head mounting guides (right) BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual...
- Page 19 Sound Quality Head and Torso Simulator Type 4100, 4100 D Brüel & Kjær User Manual...
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Page 20: Calibration And Setup
Chapter 3 Calibration and Setup BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... -
Page 21: Calibration
Chapter 3 — Calibration and Setup Calibration Calibration For reliable measurements using Type 4100, accurate calibration is extremely impor- tant. It serves both as a functional check of the microphone/preamplifier combina- tion and as an individual calibration of the preamplifier voltage output for a specific acoustic input. -
Page 22: Frequency Response Calibration
At higher frequencies they become differ- ent. In Type 4100 (D), the microphones are built into the head pinnae and there is a large difference between the pressure response and the diffuse-field response – see Fig.3.3 and Table 3.1. - Page 23 First, the physical dimensions of the head need to match those of an average person. In Type 4100, this is satisfied by compliance with ITU –T Rec. P.58. In order to determine the correct frequency response to sound from different direc- tions, Brüel &...
- Page 24 2.85 6000 7.22 19000 –12.00 The result is a better signal-to-noise ratio, a simplified diffuse-field correction, and easier headphone calibration in the playback process. BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual...
- Page 25 Sound Quality Head and Torso Simulator Type 4100, 4100 D Brüel & Kjær User Manual...
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Page 26: Service
Chapter 4 Service BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... - Page 27 Please consult your local Brüel & Kjær service representative. Brüel & Kjær offers a range of calibration services for Types 4100 and 4100 D. Details of order numbers are given in section 5.4.
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Page 28: Specifications
Chapter 5 Specifications BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... -
Page 29: Specifications - Type 4100
CE-mark indicates compliance with EMC Directive and Low Voltage Directive. (See also Microphone and Preamplifier Product Data) Ordering Information Types 4100 and 4100 D Sound Quality Head and Torso Simulator CALIBRATION OPTIONS Include the following accessories: CAI 4100 Accredited Initial Calibration... -
Page 30: Index
Diffuse field response ..........18 Dismantling ..............11 Dual Microphone Supply Type 5935 L ....16 Neck ring ................10 Adjustment ..............11 Equalization ..............18 BE 1391 – 13 Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual... - Page 31 ......3 Preamplifier cables ............12 TEDS ................... 16 Recording ................4 Removing the pinna simulator ....... 11 Zwicker Loudness calculation ........5 Scales ................. 12 Brüel & Kjær Sound Quality Head and Torso Simulator Type 4100, 4100 D User Manual...
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