Acoustical References
Standard for calibrating sound level meters and sound measuring systems.
See Also: References, Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transformers, Reference Transmitters, Frequency References, Solar Reference Cells
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AC Reference Generators
SRB
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Computer Conversions Corporation
The SRB Series are miniature, Bulk-head Mount, low cost AC reference generators to supply moderate power 2-115VAC excitation to Synchro's, Resolvers, LVDT's and related converters in COTS-Military and industrial applications for measurement, control, simulation and data communications.
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Product
Three Phase Reference Standard Meter
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Signals & Systems India Private Limited
The Three Phase Reference Standard Meter (TPRS-1107) is portable equipment from SANDS. The main objective of this device is to calibrate the errors in three-phase and single-phase energy meters i.e. the meter under test (MUT). The TPRS supports both static and electro-mechanical types of meters. It can also be used to compute the voltage, current, energy, power factor etc of the meter under test. It has an LCD display, an alphanumeric keypad that makes it easy for the user to operate the TPRS. It can be interfaced with the PC for data analysis. It has the capability of storing up to 8000 test results.
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Sound Power Reference Source
Qref
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Precision omni-directionallity in all directions, horizontal and vertical plane. This source has a frequency range of application between 100 and 8000 Hz (third octave bands) Despite only weighing 1.4 kg and having a diameter of 105 mm, it produces a maximum sound power level of Lw 104 dB.
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Product
HEAD acoustics Radio Analyzer Tool
TUNE
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The HEAD acoustics Radio Analyzer Tool TUNE allows a reproducible analytical evaluation of the impact of analog radio broadcast disturbances on perceived audio quality based on auditory test results.
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Bulk Acoustic Wave Technology
BAW
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Macom Technology Solutions Holdings Inc.
MACOM’s BAW product portfolio is ideal for high performance Industrial, Aerospace, Defense, and Communications applications that require critical frequency filtering. Our high-performance RF filters enable our customers manage signal integrity in the 1 to 6 GHz frequency range. Bulk Acoustic Wave Resonators consist of two metal electrodes above and below a layer of a piezoelectric material. The piezoelectric material converts an electrical signal to a mechanical signal and vice versa. The metal electrodes provide the connections to/from the piezo material. The frequency at which resonance occurs depends on the thickness of the combined metal-piezo-metal stack. Advances in thin-film piezoelectric fabrication have enabled BAW resonators to meet RF filtering challenges up to 6000 MHz using standard MEMS fabrication process. High-performance BAW resonators-based RF filters are made of piezoelectric material having high Q-factor (>3000) and high coupling coefficient. Currently, no competitive technology provides the same high performance for RF filter applications when compared to BAW resonator-based RF filter up to 6000 MHz for the same size and cost.
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Acoustic Zooplankton Fish Profiler
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The ASL Acoustic Zooplankton Fish Profiler™ (AZFP™) offers a new, economical way of obtaining reliable measures of marine environmental conditions in the water column. The AZFP™ can monitor the presence and abundance of zooplankton and fish within the water column by measuring acoustic backscatter returns at multiple ultrasonic frequencies. Other sonar targets realized from the sonar backscatter data include bubbles and suspended sediments.
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A Global Standard for Acoustic Absorption Measurements
Alpha Cabin
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The Alpha Cabin has been especially designed for the measurement of acoustic absorption properties of materials and components used for the noise insulation of vehicles. The Alpha Cabin is significantly smaller than normal reverberation rooms and therefore ideally suited to use within limited space capacities. The acoustic absorption of the Alpha Cabin itself is also very low: Thanks to the high level of sound insulation, background noise in the frequency range of interest is kept to a minimum.
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Product
PC Based Audio & Acoustic Analyzers
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Audio Analyzers, Acoustic Analyzers, and Electro-Acoustic Test Accessories
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Intelligent Time Reference
TM-4™and TM-4/OEM™
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The Intelligent Reference/TM-4™ and TM4/OEM™ are multi- purpose, GPS disciplined timing signal generators and frequency references in economical off-the-shelf and custom configurations. Intended for use in a wide variety of timing, synchronization and frequency reference applications, they are based on the most advanced architecture Spectrum has ever offered, and include the most popular features of Spectrum's core platform for current timing products.
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Product
Shunt Voltage References
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Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
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Product
Building Acoustics
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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 resulting data is useful for evaluating compliance with building codes and for proposing countermeasures for areas of concern. These measurements often involve creating and measuring an artificial sound source, and then measuring the resulting noise in receiver locations.
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Calibrated Solar Reference Cell
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To insure repeatable testing on any solar simulator, OAI offers 2cm x 2cm calibrated reference cells. Standard reference cell calibration cycles can be set up by OAI''s calibration laboratory to insure that your reference cell maintains certification.
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Acoustics Analysis
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The sounds a product makes directly impact on user experiences. Sounds create strong emotions — positively or negatively — that reinforce brand identity. The difficulty of predicting acoustic results means that a single engineering mistake can prove costly to the final product, making Ansys Acoustics Analysis a powerful solution to ensure optimal acoustics and a successful end product.
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Product
Acoustical Measurement System
MLSSA
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MLSSA is the industry standard loudspeaker measurement system and the MLSSA Speaker Parameter Option (SPO) is the industry standard for measuring the Thiele-Small parameters of loudspeaker drivers. MLSSA and SPO both include QC (Quality Control) PASS/FAIL functions for high-speed automated production line testing of loudspeakers and drivers.
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Acoustic Load Shackle
ALS-2.0
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The Acoustic Load Shackle is designed for subsea operations where load monitoring is required, either for short term operations lowering an item to the seabed or for longer periods monitoring dynamic loads.
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Product
High Accuracy AC Reference Source
515
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Clarke-Hess Communications Research
The Model 515 High Accuracy AC Reference Generator fills a need for a relatively low cost and practical solution for supplying a reference excitation to typical LVDT and Synchro/Resolver transducers. The Model 515 has built-in load sensing which, in effect, yields "zero" output impedance and virtually eliminates the effects of fluctuating output loads. With up to 15 VA of output into loads with as much as 80 of phase shift, the Model 515 is ideally suited to driving inductive loads.
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Portable Reference Generator - 5VA
RG-5
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Programmable Frequency & Voltage Portable Sine Wave Generator Sunlight Readlable Display Transformer Isolated Output 360 - 11000 Hz with 1Hz Resolution 1.9V to 125V Output with AGC
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Integrated USBL Acoustic Tracking and Communication Systems
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The TrackLink systems are the world's best selling USBL acoustic tracking systems with fully integrated high speed acoustic communication capability. Capitalizing on its benchmark Broadband Acoustic Spread Spectrum (BASS) technologies, LinkQuest provides the end users with solutions for underwater tracking and communication at sharply reduced cost and increased robustness. An extensive line of models are available to suit the users' specification and budget constraint.
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Precision SOT-23 FGA™ Voltage References
X60003
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The X60003 FGA™ voltage references is a very high precision analog voltage reference fabricated in Renesas' proprietary Floating Gate Analog technology, which achieves superior levels of performance when compared to conventional band gap, buried zener or XFET™ technologies.
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Acoustic Calibrator
CAL150
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The Larson Davis CAL150 Sound Level Calibrator is a battery operated precision microphone calibrator used for the calibration of sound level meters and other sound measurement equipment
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Audio and Acoustic Functional Test Solution
Functional Test
With the growing popularity of Internet of Things devices worldwide, many electrical products are adopting voice commands as their user interface. This means that acoustic and audio test challenges are likely to impact more products than ever before. Test teams must meet extended test coverage requirements to ensure product quality while maintaining throughput and operational efficiency. For a solution to meet these sorts of demands, it must:
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Next Generation Subsea Attitude and Heading Reference Systems
TOGS
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The new TOGS subsea navigation system is built on core TSS fibre optic gyro (FOG) navigation technology with significant improvements in efficiency and functionality. It is available in three standard heading accuracy variants: 0.1° (TOGS1), 0.3° (TOGS3) and 0.5° (TOGS5), all rated for operational depths to 4,000m or 6,000m. Attitude data is delivered via accurate roll/pitch measurement capabilities of 0.01° (TOGS1) and 0.05° (TOGS3 and TOGS5), and a heave performance of 5cm or 5%.
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Low Acoustic Noise and Compact Range
m-series
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DC powered cooling fan is built-into the shaker. Natural air cooling is also used when the cooling fan is stopped for silent operation. (with a reduction in performance)
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Reference Thermometers
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Reference thermometers (standard thermometers) are, due to their excellent stability and their geometrical adaptations, ideally suited for applications in industrial laboratories. They enable easy comparative calibration in baths, in tube furnaces and in dry-well calibrators. The advantage of reference thermometers is the wide temperature range, and with this, their flexible operation. Furthermore, with their low drift, a long service life is ensured.
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Acoustic Emission Sensors
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Acoustic wave (acoustic emission) sensors are the ceramic piezoelectric transducers converting the mechanical elastic acoustic waves generated in the material (e.g. elastic waves occur when a material cracks, wears, deforms, or corrodes) to electrical signals. The electrical signals are then amplified and filtered by a preamplifier and then transmitted to a special acoustic emission acquisition instrument for further data processing and analysis.
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Product
Slag & Refractory Reference Materials
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NCS Testing Technology Co., Ltd.
Slag & Refractory Reference Materials by NCS
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High-Speed, Fiber-Optic Reference Transmitters
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Thorlabs' Reference Transmitters are designed for high-speed fiber optic test and measurement applications. They are fully-integrated and user-configurable solutions based on proven lithium niobate (LiNbO3) modulator technology driven by high-fidelity RF amplifiers.
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Precision Chilled Mirror Reference Hygrometers
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Chilled mirror dew-point hygrometers provide highly accurate and stable measurements of trace moisture and humidity. The precision chilled-mirror reference hygrometers are sensitive to changes in very low moisture concentrations (less than 5 ppbV).
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Attitude And Heading Reference Systems
AHRS
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Beginning in 2001, Inertial Labs began manufacturing its MEMS-based, IP-67 sealed, MIL-STD-810G qualified, multiple interfaces and COM ports Attitude and Heading Reference System in response to the need for an inclusive and price competitive Antenna Pointing, Aiming, and Stabilizing applications. Each INS contains an Inertial Labs-developed tactical or industrial-grade inertial measurement unit (IMU) and an Inertial Labs-manufactured high-precision Fluxgate magnetometer.
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Acoustic Emission System
Pocket AE-2
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The Pocket AE-2 is a high performance, computerized, dual-channel Acoustic Emission (AE) system which is packed in a robust, portable handheld unit optimal for field use. The Pocket AE-2 offers all the performance, capabilities and features of larger, more expensive MISTRAS’ AE system (wide bandwidth, speed, AE features, sampling rates, waveform processing, audible AE) in a compact, battery-operated package.
