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AWA14423C 1/2"
infrasound
measuring microphone capsule

Infrasonic USB measurement microphone AWA14423C + iSV1611

The 1/2” measuring microphone capsule AWA14423C is designed for acoustic measurements in research, development and industry and is also used in building acoustics and audiology, among other things.

  • Frequency range 1 Hz to 20 kHz
  • free field
  • Sound pressure level up to 145 dB
  • 17 dBA to 145 dB
  • pre-polarized 

The measurement microphone capsule has a fixed charge carrier layer (backelectret) to provide the polarization voltage.

The careful construction and the constructive concept of the microphone capsules guarantee a high temporal constancy of the electro-acoustic parameters.

The internationally common thread type (60 UNS) for connecting the microphone capsule allows interchangeability with other 1/2” microphone capsules and enables connection to all suitable calibration and measuring devices.

1/2" USB free field
microphone class 1 WS2F

USB measurement microphone preamplifier infranoise application

The iSV1611 digital USB microphone preamplifier is suitable for all common pre-polarized 1/2” measurement microphone capsules.

The thread type 60 UNS allows the combination of different microphone capsule manufacturers depending on the application.

For infrasonic applications we offer the AWA14423C capsule.

Infrasonic USB Microphone Price: 1380  € plus VAT
AWA14423C + iSV1611 + NVH Analyzer Lite Price: 1580  € plus VAT

AWA14423C + iSV1611
Low-Frequency Acoustic Signal Test Report

Test description

 

AWA14423C Mic with iSV1611 preamplifier group is up to 2Hz.

Test Equipment
 

Device name

Model

Serial No.

Signal generator

B&K3560C

2639074

Signal Analyzer

B&K3560C

2469256

low frequency coupling cavity

AWA6153S+

2006922

Sound calibrator

B&K4231

3014796

Standard microphone

B&K4191

2254873

Preamplifier

B&K2669

1834310

 

Test Methods

 

The comparison method is mainly used, using B&K3560C as a signal generator and signal collector, output to AWA6153S+, so that it outputs sound signal, B&K4191 microphone for comparison, the test uses the same coupling cavity output port (two holes have low frequency deviation), the B&K4191 The frequency response is corrected as a reference value for calculation.  Before the test, it has been verified that the low frequency of the B&K3560C electrical signal can be tested to 0.08Hz, and the frequency response at 0.08Hz is better than ±0.1dB.

  Test attenuation value of AWA14423C + iSV1611

 

frequency /Hz

attenuation value /dB

 

AWA14423C (15129)
iSV1611 (500454)

AWA14423C (15136)
iSV1611 (500493)

 
 

250(ref.)

0.02

-0.07

 

2

-1.59

-2.13

 

3

-0.66

-0.81

 

4

-0.34

-0.52

 

5

-0.25

-0.47

 

6

-0.17

-0.31

 

7

-0.11

-0.10

 

8

0.03

-0.16

 

9

0.05

-0.09

 

10

0.08

-0.12

 

12.5

0.05

-0.07

 

16

0.04

-0.12

 

20

0.02

-0.14

 

25

0.01

-0.16

 

31.5

0.00

-0.08

 

40

-0.02

-0.1

 

50

0.06

-0.12

 

63

0.04

-0.14

 

80

0.01

-0.08

 

100

0.05

-0.14

 

   

Specifications of the
infrasonic microphone capsule

Model
AWA14423C IEC 61094-4 Type WS2
Diameter
1/2″
Frequency Range
0.125 Hz ~ 20 kHz (±1.5 dB)
Responce Type
Free field
Electrode Forming Voltage
0 V
Sensitivity (dB re 20 μPa)
50mV/Pa (±1.5dB)
Capacitance at 250 Hz
18 pF
Maximum Sound Pressure Level
145 dB
Intrinsinc Noise Level
17 dB (A)
Operating Temperature Range
10℃~+ 50℃
Operating Humidity Range
up to 70 °C, 90 %
Temperature Characteristics
< 0.015 dB/°C
Humidity Characteristics
0.001 %(RH)
Aging Drift
0.2 dB/Year
Storage Temperature Range
-20 °C ~ +60 °C
Storage Humidity Range
25 % ~ 90 %(RH)
Venting
rear vented
Outer Dimensions
Ф 13.2 mm x 16 mm
Weight
8.3 gram

Digital 1/2" USB Microphone Preamplier
Specifications

Model
USB Microphone
Preamplifier
Signal Amplitude ref. 50mV @ 1kHz
Frequency Response
Frequency Sampling 192 kHz
1 Hz~20Hz, Error <3.0dB
20 Hz~20kHz, Error<0.3dB
20 kHz~80kHz, Error<3dB
Electrical signal
noise background
Ch.1 (<13dBA, <26dBZ)
Ch.2 (<50dBA, <63dBZ)
THD Input 1kHz, 50mV, A weighting
<0.1%
Overload Indicator
1kHz (THD<3%)
Ch.1 (>101.9dB)
Ch.2 (>140dB)
Amplitude accuracy
Input 31.6mV, 1kHz, 90.0dB
Error <0.2dB
Dimensions
1/2″ Outer diameter
of protector cover
Ф 20 × 165 mm
φ 13.2mm
Weight
<96 g (cable not included)
Operating Temperature
-20°C ~ + 60°C
Humidity
25 %~ 90 %(RH)
Atmospheric Pressure
65 kPa~108 kPa
Connector Type
USB2.0,
Microphone Thread
11.7 mm-60 UNS
NVH Analyzer Lite
Price 440 € + VAT

Measurement microphone software for professional use in education, development and industry.

  • Microphone calibration with sound calibrator, or input of microphone sensitivity.
  • According to IEC 61672-1 weighting filters A, C and Z | time weighting: ‘Fast’, ‘Slow’, ‘Impulse’.
  • Demonstration of the software with USB measurement microphone
  • Calibration with microphone calibrator Svantek SV30A .
USB Measuring Microphone Software

 

NVH Analyzer Lite functions

  • FFT block size 101 to 51201
  • FFT line resolution 0.366 Hz @ 48 kHz / 51201
  • FFT averaging linear, peak hold
  • Sum level Band limit – adjustable
  • Weighting Slow, Fast, Pulse
  • Weighting filters Lin, A, C
  • High-pass- Low-pass filter adjustable
  • FFT T-AVG
  • Time domain sound level
  • Time domain sound level A-filter
  • 1/3 octave spectrum
  • 1/3 octave T-AVG

Listening to the measurement data via the PC speaker after recording is possible.

Here more information about NVH Analyzer Lite

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