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) | AWA14423C (15136) | ||
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.