Noise Meter / Analyzer

Sound Level Meter

Class 1 Sound Level Meter BSWA 308

Type: Class 1
Standards: IEC 61672-1 : 2013, ANSI S1.4-1983 and ANSI S1.43-1997
Linearity range: 20dB(A)~134dB(A)
Dynamic range: 11dB(A)~134dB(A)
Sampling rate: 48kHz
1/1 Octave: 8Hz~16kHz
1/3 Octave: 6.3Hz~20kHz (Optional)
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Sound Level Meter BSWA 309

Type: Class 2
Standards: IEC 61672-1: 2013, ANSI S1.4-1983 and ANSI S1.43-1997
Linearity range: 25dB(A)~136dB(A)
Dynamic range: 14dB(A)~136dB(A)
Sampling Rate: 48kHz
1/1 Octave: 20Hz~8kHz
1/3 Octave: 20Hz~12.5kHz (Optional)

Detail

Calibrator

Class 1 Acoustic Calibrator CA111

Type: Class 1
Microphone size: 1/2-inch and 1/4-inch with adapter
Standards: IEC 60942:2003, ANSI S1.40-1984 and GB/T 15173-1994.
Output: 94dB & 114 dB sound pressure level
Detail

Class 2 Acoustic Calibrator CA114/115

Type: Class 2
Microphone size: 1/2-inch and 1/4-inch with adapter
Standards: IEC 60942:2003 Class 2, ANSI S1.40-1984 and GB/T 15173-1994.
Output: 94dB & 114 dB sound pressure level

Detail

Electrostatic Actuator & Power

Electrostatic actuator power supply

Max. Input Signal: 1Vrms
Signal Magnified by: 30dB
Max. Output Signal: 25Vrms
Frequency Range: 1 Hz ~ 200 kHz
Output Impedance: 1500 Ω
Power Supply: 220V 50Hz

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Electrostatic actuator

Standards: IEC 61094-6
Microphone Diameter: 1”
1/2”(Optional adapter)
1/4” (Optional adapter)
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Calibration Stand

Matching Diameter of Micropohone: 1/2″ , 1/4″
Dimension: Φ150 mm × 15 mm (base)
Φ20 mm × 145 mm (pillar)
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High Sound Pressure Calibrator & Full Frequency Coupler

High Sound Pressure Calibrator CA915

Working Principles: Comparison Method
Test objects: 1/4″ or 1/2″ microphone
Build-in Loudspeaker: 280W Compression
Max output SPL: >154 dB SPL @ 2000 ~ 10000 Hz
> 164 dB SPL @ 2000 ~ 2500 Hz, 6200 ~ 6600 Hz
Frequency response: 2k Hz ~ 8k Hz
Connector: BNC

Detail

Full Frequency Coupler CA916

Working Principles: Comparison Method
Test objects: 1/4″ or 1/2″ microphone
Build-in Loudspeaker: 0.8W
Frequency response: 20 ~ 20k Hz

Detail

Low Frequency Coupler

Low Frequency Coupler CA 917

Microphone: 1”,1/2” and 1/4” microphone
1/2” – 1/4” (optional adapter)
Frequency Response: 3.15Hz ~ 500Hz
Sound level: >110dB
Speaker: 4” aluminium-magnesium alloy diaphragm
Rated Impendence:
Rated Power: 15W
Max Input Voltage: 1Vrms

Detail

Data Acquisition Hardware-without gain

Data Acquisition Hardware MC3522

Input Channel: 2, ICCP (4 mA)
Max Input Voltage: 1.0 Vrms
Output Channel: 1, with 20W power amplifier
Max Output Voltage: 1.0Vrms
Frequency Response: IEC 61672 Type 2
A/D Converter: 16bits
Max. Sampling Frequency: 44.1 kHz
Measurement Range (With MPA201): 35 ~ 118 dB (A)
Power Requirement: USB

Detail

Sept 2017

Data Acquisition Hardware MC3242

Input Channel: 4, BNC with ICCP Power Supply (2mA/21V, can be turned off)
Max Input Voltage: ±5Vpeak
Output Channel: 2
Max Output Voltage: 1.85Vrms
Input Frequency Response: 2 Hz ~ 20 kHz (±0.5 dB)
A/D Resolution: 24bits
Sampling Rate: Input: 51.2 kHz, Output: 8/16/32/44.1/48/96 kHz
Measurement Range (With MPA201): 30 ~ 130 dB (A)
Power Requirement: USB

Detail

Data Acquisition Hardware MC3022

Input Channel: 2, ICCP (4 mA)
Max Input Voltage: 1.0 Vrms
Output Channel: 1
Max Output Voltage: 1.0Vrms
Frequency Response: IEC 61672 Type 2
A/D Converter: 16bits
Max. Sampling Frequency: 44.1kHz
Measurement Range (With MPA201): 35 ~ 118 dB (A)
Power Requirement: USB

Detail

2-Channel Acoustic Measurement Instrument -with gain

2-Channel Acoustic Measurement Instrument MC3322

Input Channel: 2
Max Input Voltage: 10Vrms (-20dB), 1Vrms(0dB), 0.1Vrms (20dB)
Output Channel: 2
Max Output Voltage: 1.85 Vrms
Frequency Response: 6.3Hz ~ 46kHz (±0.5dB) (INPUT)
4 Hz ~ 31.5 kHz (±0.5dB) (Output)
A/D Converter: 16/24-bit (input/output can only have one set to 24-bit)
Sampling Rate: 8/16/32/44.1/48/ 96kHz
Power Requirement: 7V~ 14V (500mA) an external power supply USB power supply (should be 500mA power supply capacity)

Detail

2-Channel Acoustic Measurement Instrument MC3122

Input Channel: 2, ICCP (4 mA)
Max Input Voltage: 1.0 Vrms
Output Channel: 1
Max Output Voltage: 1.0Vrms
Frequency Response: IEC 61672 Type 2
A/D Converter: 16bits
Max. Sampling Frequency: 44.1kHz
Measurement Range (With MPA201): 35 ~ 118 dB (A)
Power Requirement: USB

Detail

2-Channel Acoustic Measurement Instrument iDAQ2022

INPUT
Input Interface: 1/8″ (3.5mm) stereo unbalanced input
Recording Rates: 44.1k or 48k depending on the APP settings
Frequency Response: 20Hz ~ 20kHz (+0.1/-0.6dB)
Maximum Input Voltage: 6Vrms
Noise Level (RMS, A-weighted): -96dB
Dynamic Range (RMS, A-weighted): 96dB
THD+N (-3dBFS): 0.05%
Stereo Crosstalk (1kHz): -60dB
OUTPUT
Output Interface: 1/8″ (3.5mm) stereo unbalanced output
Maximum Output Voltage (into 32ohm): 1Vrms (63mW)
Frequency Response: 20Hz ~ 20kHz (+0.2/-0.4dB)
Noise Level (RMS, A-weighted): -97dB
Dynamic Range (RMS, A-weighted): 96dB
THD (600mVrms into 10kohms): 0.0020% (-94dB)
THD (0dBV into 10kohms): 0.0036% (-89dB)
THD (0dBV into 32ohms): 0.026%
Stereo Crosstalk (100Hz to 10kHz): -88dB
Device Connection: USB-A
Size (mm): 59x70x12.5
Weight: Approx. 46 g (main device only)

Detail

Real Time Analyzer Software

2&4 Channel Analyzer

VA-Lab 2/4 represents the most cost-effective 2 or 4-channels solution for all your needs in Acoustics Measurement and Analysis.
Features

  • A complete set of application oriented modules for measurements and analysis of acoustic signals.
  • Simultaneous real-time 2/4 channel FFT, 1/n octave, and cross-spectra, etc.
  • Long term noise monitoring for environmental noise analysis or product noise monitoring
  • Measurement of sound absorption coefficients in impedance tube according to ISO10534 -1 and ISO10534-2
  • Measurement of sound transmission in impedance tube using four-microphone technique (VA-Lab4 only)
  • Multi-channel reverberation time measurements
  • Measurement of Sound Insulation between rooms and automatic calculation of Indices.
  • Sound power measurements based on ISO 3745 with 2/4 channels
  • Sound Intensity measurements and partial sound power calculations
  • Audio analysis for frequency responses and harmonic distortions.
  • Data recording and playback

VA-Lab2 supports the following hardware from BSWA:

  • MC3022: 2 channel ICCP inputs; 2channel outputs; USB powered. Recommended for field uses
  • MC3522: 2 channel ICCP inputs; 2channel outputs; USB powered, built-in power amplifier to drive loudspeakers (needs 220V AC power for amplifier) Recommended for impedance tube; and audio analysis
  • MC3122: 2 channel ICCP inputs; 2channel outputs; 220V/110V AC powered. Recommended for Lab uses.

VA-Lab4 supports the following hardware from BSWA:

  • MC3242: 4 channel ICCP inputs; 2channel outputs; USB powered. Recommended for field use
  • MC3642: 4 channel ICCP inputs with gain x1, x10, and x100; 2 channel outputs. Recommended for lab use.

Detail

VA-Lab Software

VA-Lab is acoustical measurement software which has module designed according to ISO standard requirements, such as Sound Power, Sound Insulation, and Impedance Measurements.

The VA-Lab function modules include:

  • BASIC:
    FFT based signal analysis for vibration and acoustics
  • ENV:
    VA-Lab ENV is a powerful sound level meter. It supports maximum 10 channel sound pressure level measurements at 10 locations. Each channel can perform multi-task analysis such as statistical levels, 1/3 octave, and levels vs. time. VA-Lab ENV has built-in data logger function, it can continuously log the overall and spectral data into the memory.
  • ARCH:
    VA-Lab ARCH module provides reverberation time measurements and sound transmission loss measurements according to ISO standards.
  • IMP:
    VA-LAB IMP is the software module for impedance tube measurements. It supports sound absorption and sound insulation measurements in BSWA SW series impedance tubes. The software works with BSWA MC3522 and MC3242 hardware for data acquisition and analysis.
  • SI:
    VA-Lab SI module provides a simple system for sound intensity measurements. The system requires two-channel (or two channels of multi-channel) data acquisition hardware and intensity probe SI502. The measurements of sound intensity become very easy task.
  • REV:
    Reverberation time measurements according to ISO3382
  • TL:
    Sound Insulation measurements for building material according to ISO 140.
  • POWER:
    VA-Lab SP module is specially designed to satisfy sound power level test according to ISO3745. With NI Compact DAQ and BSWA microphones, the noise level can be tested simultaneously in 10 channels; the sound power level is calculated automatically based on the measurement surface area.
  • AUDIO: BSWA audio test system consists of VA-Audio software, MC3522 data acquisition hardware, and microphones. The artificial mouth and artificial ear is optional items for audio measurements.

Main features of VA-Lab BASIC:

  • FFT Analysis: general signal analysis including FFT,CPS, Transfer Function, Coherence, Auto Correction, Cross Correction, Cepstrum, etc. Data can be captured and saved in real-time mode
  • 1/n Octave: general 1/n octave analysis for sound and vibration signals, n=1,3,6,9,12, 24
  • Calibration: user selection of sound or vibration calibration.
  • Signal Generator: >sine, square, triangle, sawtooth wave, white noise, pink noise, frequency sweep, multi-tone, tone burst, wavefile, etc.
  • Record: Wave file or time series signal record and play back

Outdoor Noise Monitoring

Hardware Terminal for Outdoor Noise Monitoring

Outdoor Noise Monitoring Terminal NMT1000 is a powerful, intelligent noise monitoring terminal, optimized for outdoor use. NMT 1000 is a Hyper-Integrated noise monitor system that can be left unattended as part of an environmental noise monitoring system for mobile, permanent and semi-permanent monitoring. NMT 1000 terminal can store 12-48 days noise data and transit that over GPRS. It can be used in all climatic environments, especially suitable for industrial, city and filed. The noise monitoring terminal can be remote controlled by PC over GPRS.

Detail

Software for Outdoor Noise Monitoring

VA-LAB Outdoor Software Bird 1.0 for terminal NMT-1000 is used to configure, download noise data (1-second Leq or SPL) and check the status of the system. It also can set the terminal date and time. Bird 1.0 can operate via GPRS and USB. The NMT can store data in terminal memory, and Bird 1.0 can download the noise data and save it as .txt file which can be input to VA-LAB outdoor.
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Accessories

Cable CLS8nn

8 pin LEMO male to 8 SMB connectors Cable. It is used with the microphone array
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Cable CLL7nn

7 Pin LEMO female to 7 Pin LEMO male Cables. It is used with MV201 preamplifier.
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Cable CSBnnn

SMB to BNC cables used for connecting SMB microphones to acquisition input channels.
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Cable CSSnnn

SMB to SMB Cables.
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Cable CUBnnn

10-32 UNF (or M5) to BNC cables commonly used to connect accelerometers or other transducers to acquisition system and analyzers. Model number indicates cable length. Also available are cables suitable for high temperature environments.
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Cable CBBnnn

BNC to BNC cables used to connect BNC microphones or transducers with date acquisition system or test equipment. Model number indicates cable length (i.e. BB020 for 20 m.)
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Cable CUUnnn

10-32 UNF/M5 to 10-32 UNF/M5 Cables. Also available are cables suitable for high temperature environments.
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Nose Cone NC002

Specially designed windscreen for 1/2” microphones exposed to high winds.
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Microphone Fixing Connector FC002

Used for fixing the microphones to the fixture such as the MF710/720. it can also help to adjust the position of the microphone on the fixture.
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Dummy Microphone M001

Specially designed for use with ICCP preamplifier to test the back-ground noise of the system.
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Microphone Adaptor for Preamplifier-TA042

Adaptor for 1/4’’ microphone and 1/2’’ preamplifier.
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Windowscreen-WS002-3

Elliptical windscreen for 1/2” microphones.
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Windscreens-WS002-5

50 mm diameter, spherical windscreen for 1/2” microphones. Also available is 50 mm diameter windscreen for 1/4” microphones.
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Windscreens-WS002-9

90 mm diameter, spherical windscreen for 1/2” microphones.
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