Equipment information
Brüel & Kjær 4219 Other
Manufacturer:
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Model:
4219
Date:
1971
Category:
Group:
Description:
Artificial Voice
Information
The Artificial Voice Type 4219 is a complete redesign of the
Artificial Mouth Type 4216. It is intended for use in
laboratories and quality production control, when a well
defined sound source is required, and when it is more
convenient to use an artificial source rather than the human
voice.
The Artificial Voice produces a sound field similar to the
sound field from a human mouth, and also covers the
frequency and pressure ranges normally produced by the human
voice.
it is equipped with a built-in condenser microphoneand
preamplifier, which can be used with the compressor circuit
of a B & K Beat Frequency Oscillator to maintain a constant
sound pressure at the orifice.
The characteristics of the voice make it suitable for
general acoustic work, and telephone measurements.
Manual Type:
User Manual
Pages:
29
Size:
1.36 Mbytes (1422049 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
1971 02 01
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2017 06 01
MD5:
5bdf63357091aaca09bea150066f3104
Downloads:
436
Information
1. INTRODUCTION ... 3
2. DESCRIPTION ... 4
2.1. General ... .
. .. . 6
2.3. Closed Volume Characteristics ... . 12
2.4. Directivity
... 14
2.5. Obstacle Effect
... 14
3. OPERATION ... 19
3.1. Calibration ... 19
3.2. Recording the Frequency Response of Microphones . 19
4. SPECIFICATIONS