Acoustic Sources
Standard for calibrating sound level meters and sound measuring systems.
See Also: Sound Sources
- Applied Instruments, Inc.
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RF Noise Source
NS-3
The NS-3 Broadband RF Noise Generator provides an extremely flat AWGN (Additive White Gaussian Noise) signal from 5 to 2150 MHz. The output level adjusts in 0.1 dB steps over a 30 dB range.The bench-top configuration is standard and an optional two unit rack enclosure is available. The RS232 or USB remote control interface simplifies its use in automated test and factory ATE environments. The NS-3's combination of range, versatility and value make it the ideal general purpose broad-spectrum signal source for bench and ATE applications, including C/N, BER, MER, PER testing and rain fade simulation.
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Electronic / Acoustic Signal Source
Bedrock BTB65 TalkBox
The Bedrock BTB65 Talkbox can be used as an electronic signal source by utilizing the line-out connection. Or it can be used as a calibrated acoustic signal source, due to its integrated loudspeaker. The Bedrock BTB65 Talkbox is designed to accurately play the STIPA test signal, as well as several other test signals. The device features an interactive LCD touchscreen to show,which allows you to easily control all features and monitor its settings at a glance.
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Acoustic Analysis
Noise is increasingly the subject of new regulations for the protection of human health and safety as well as for improving the environment in general. As well as sound levels, the perceived sound quality of products from washing machines to vehicles is often an important part of the customer buying decision so must be considered during product development. m+p Analyzer for noise and vibration measurement and analysis provides a full range of capability for these applications. Real-time fraction...show more -
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Acoustic Camera
SONASCREEN®
The handheld acoustic camera SONASCREEN generates acoustic images from both the audible and ultrasound frequency range. The device locates sound sources in real time and displays the results immediately on the screen. Furthermore, the camera provides audible feedback through industrial headphones. We make ultrasound audible and visible.
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Building Acoustics
Measurements to evaluate and improve Building Acoustics are typically made to analyze and design noise control from room to room, or from outside to inside. Noise sources such as music systems, televisions, appliances, traffic, aircraft, and manufacturing are all around us. The field of Building Acoustics evaluates and designs the materials and methods to insulate and isolate us all from these sound sources when we are at work, rest, or enjoying leisure time. The resultin...show more -
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Acoustic Emission Transducer
GT301
Acoustic emission transducer GT301 converts acoustic signal into electrical signal, parameters of which are used for acoustic emission source evaluation.
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Directional Source
BAS003
The BAS003 Source is designed to generate homogeneous sound fields using random noise in compliance with the following standards: Building acoustics (insertion loss, acoustic absorption area, etc: ISO 140-3, ASTM E90, ISO 140-5, ASTM E966). The BAS003 is typically used to generate a noise in a free-field for the evaluation of the transmission loss index of a façade. The available high-efficiency power amplifier, BAS002, is light and can be remotely controlled for easy use in the field.
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Omnidirectional Source
BAS001
The BAS001 Source is designed to generate omnidirectional sound fields for making standard compliant measurements including: reverberation time (ISO 3382, ASTM E2235), building acoustics (insertion loss, acoustic absorption area, etc: ISO 140-4 ISO 140-3, ASTM E336, ASTM E90, DIN 55 210). The BAS001 is typically used to saturate a room with a uniform acoustic field. The available high-efficiency power amplifier has no fan for cooling, allowing measurements in quiet environments, like those in reverberation time applications.
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Production Line Acoustic Test Chamber
PLATC
The Production Line Acoustic Test Chamber from GRAS is designed for quick and qualified acoustic test of cell phones, tablet PCs, Bluetooth speaker systems etc., including frequency response, THD, Rub & Buzz and microphone test using optional sound source. The chamber has a number of connections for injecting test and control signals to the test object (DUT).Benefits include:Repeatable testing and reliable dataEasy open/close for quick and safe change of DUTFlexible test jig for easy adjustm...show more -
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Omnidirectional Sound Source
DS3
The Dodecahedron Speaker Set offers a lightweight, yet powerful signal source for room & building acoustic measurements. The optimized frequency response ensures precise measurements in accordance with the ISO 16283 and the ISO 3382 standards. The set includes the robust omnidirectional DS3 odecahedron Speaker and the remote-controlled PA3 Power Amplifier. Equalized acoustic frequency spectrum from 100 Hz to 8 kHz.
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Omnidirectional Sound Source
OmniPower
OmniPower Type 4292-L is an omnidirectional sound source, intended to be used in acoustical measurements for which a uniform spherical sound radiation is required.OmniPower complies to the ISO 3382, ISO 140 and DIN 52210 standards, and is used in both room acoustics and building acoustics applications.
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Sound Source Localization
In order to optimize product sounds, it is necessary to know the exact point of origin of a sound source. This makes possible to identify the cause of disruptive sound components and rectify these effectively, optimize sound radiation and thereby achieve the desired sound experience. The ease of use and advanced beamforming algorithms of the HEAD VISOR acoustic camera allow sound sources to be located precisely at the blink of an eye.
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Borehole Impulsive Source Of Choice
G-SOURCE
Over the years the Sercel G-SOURCE range of products has become the system of choice for advanced VSP surveys, in both offshore and onshore environments. The G-SOURCE and delta cluster combine the advantages of a powerful source and a clean acoustic performance to maximize borehole data quality.
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Long Life Seismic Energy Source
1500LL
Bolt introduced the LONG-LIFETM air gun in 1992. Since then it has become the standard energy source for marine seismic exploration. It is a stable, trouble-free energy source that produces high acoustic output. Another signature advantage is the long work life between required maintenance.The Long-LifeTM product line offers three models with different output volume ranges.
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Microphone Array System for Noise Source Identification
Noise source identification of large-scale machinery is a tough issue. If you don’t know the noise source, you cannot find out methods of improving you products. Microphone array, or acoustic camera, is an advanced technology for noise source identification in steady, non-steady, motion, or rest state. A microphone array system can display noise source distribution in real time, and identify the locations of noise source inside the equipment
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24-Bit High-Resolution Dynamic Signal Acquisition and Generation Module
PCI-9527L
The PCI-9527L is a high-performance, 2-CH analog input and 2-CH analog output dynamic signal acquisition board. This board is specifically designed for audio testing, acoustic measurement, and vibration analysis applications.The ADLINK PCI-9527L features two 24-bit simultaneous sampling analog input channels. The 24-bit sigma-delta ADC provides a sampling rate up to 216 KS/s at high resolutions, making it ideal for higher bandwidth dynamic signal measurements. The sampling rate can be adjusted b...show more -
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Amplifier
BAS002
When coupled with the BAS001 omnidirectional speaker or BAS003 directional speaker, the BAS002 amplifier is the ideal sound source for making room and building acoustics measurements.
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CAD Tool
Sabin
Sabin is a powerful CAD tool for room acoustics engineers. Based on statistical calculations, it determines the acoustical parameters of a user defined room, such as the reverberation time T60, the sound pressure level, and the RASTI as a measure of speech intelligibility. These parameters are updated dynamically, while the user is changing simulated sound sources and absorbing materials.
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Class 1 Sound Level Calibrator
HD2020
The HD2020 sound level calibrator is a portable, battery operated sound source, suitable for sound level meters (portable and laboratory) and acoustic stations.
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Directional Microphone
MI-8100
MI-8100 is a shotgun type directional microphone which sharply catches the intended sound. This directional microphone is helpful for the removal of background noise in the simple sound source exploration and in abnormal sound detection. Flat frequency characteristic from 50 Hz to 20 kHz and sharp detection with high S/N ratio provide high sensitive detection of various sound coming from the specific direction. By combining the acoustic vibration monitor BL-1100, only the intended frequency or sound is focused and caught clearer.
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Event Monitoring System
Sigma 4
Sigma 4 utilizes the “Seismic Acoustic Monitoring” seismograph node. This is the most advanced, field-proven acquisition system in the world. It works seamlessly to provide the most fully integrated source control/recorder solution.*Autonomous Operation using Internal Storage*USB External Storage for Fast Data Collection*Use internal battery option or external power connection*Internal 3C geophone or external Geophone/Seismometer/Hydrophone/Microphone*Supports standard Ethernet equipment
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Loudspeaker Box
Echo
The Echo Speech Source Type 4720 is a small active loudspeaker box providing calibrated acoustic signals for speech intelligibility measurements using the Dirac room acoustics software. The Echo Speech Source is typically placed at a human speaker position. The received signal at the listener position is then picked up by a microphone and analyzed in Dirac to arrive at an accurate qualification of the speech intelligibility through parameters such as the Speech Transmission Index (STI). The Echo Speech Source operates from 4 AA batteries or an external mains power supply, and can be mounted on a standard tripod.
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Medium-size Reverberation Chamber
E-Series
The E medium-size multicavity Reverberation Chamber Series represents that state-of-the-art in reverberation chamber technology. The E-Series can make single measurements, batch tests, protocols or campaign tests for different frequency bands, different technologies and different channel models, running overnight without human intervention. Embedded frequency-, mode-, source- and platform-stirring in a double-shielded set of cavities allow Passive MIMO (Efficiency, Correlation, Diversity Gain, M...show more -
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Microphone Calibrators
Trig-Tek™ 402H & 402PSI
Portable, self-contained, high-intensity acoustic microphone calibration source
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Partial Discharge Testing Equipment
AR700
PD Defect Location in High-Voltage Equipment Insulation by Acoustic Sensors To act on deteriorating insulation the source of PD must be known.The insulation defects produce partial discharges, which emits electrical impulses, radiation of electromagnetic waves as well as acoustic signals.The AR700 measures acoustic signals with multiple sensors spread over the transformer. Then the software determines the failure location using the time difference of all incoming signals. Finally, these coordina...show more -
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Phantom Powered Measurement Microphone System
7052PH
The 7052PH Type 1.5TM phantom powered measurement microphone system offers a cost effective solution to acoustic measurements from phantom powered sources. Type 1.5TM - a superior Type 2. Frequency Response: <3 Hz to > 20kHz typ.(capsule). Sensitivity: 22 mV/Pa (-33 dBV/Pa)typ. Dynamic Range (capsule) 1% THD: <20dBA-150dBSPL (Capsule).
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Power Measurement
Precision Acoustics manufactures Radiation Force Balances and Check Sources which can be used to measure ultrasound power according to the IEC Standard 61161. All products are supplied with a calibration from The National Physical Laboratory, LONDON.
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PXI Chassis And Remote Controllers
We offer both PXI & PXIe chassis and controllers that support all of our PXI switching and simulation modules as well as those from third parties. There is a choice of up to 21-slot 3U chassis with options to reduce acoustic noise and modules that can be powered from a DC source.
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SGR Scintillation Gamma Radiameter
SGR scintillation gamma radiameter serves for fast and sensitive indication of gamma-ray sources. SGR covers two basic ranges of measurements:quick and selective searching for radioactive sources with fast response, acoustic signalization and histogram of 64 measured values radiometric measurements (dose rate) with the support of point and continuous measurements.
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Signal Analysis
Cross-Spectrum FFT Analysis
The program Cross narrow-band spectrum is used for evaluation of the interrelation between the signals’ parameters obtained from the two primary transducers installed at various parts of the controlled object. This program can be used for detection of noise source location, for sound absorption level evaluation and the researched object acoustic properties control, for evaluation of space-time distribution of the directional energy flux (Poynting vector), for the ground cross-section FR characteristic evaluation (Nakamura method), etc.
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Sound Level Calibrator
521
Accepted internationally 1 kHz represents the "0 dB" reference point of A, B, C Weighting and other filters utilized in acoustic measurement. The Pistonphone - a mechanical sound source - offers a slightly higher degree of accuracy at a substantial increase in cost. In addition, the 200 or 250 Hz operating frequency is mechanically limited and not suited for measurements of filtered inputs. The 0.2 dB accuracy is quickly lost in the 0.7 to 1.5 dB tolerances acceptable for weighting filters at frequencies around 250 Hz.
