Sound Sources
Standard for calibrating sound level meters and sound measuring systems.
See Also: Acoustic Sources, Acoustic Cameras
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Sound Level Meters
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Larson Davis manufactures a wide range of Advanced Sound Level Meters to meet all your environmental noise monitoring application needs.
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Dopant Source
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Attain precise and stable control of relatively low fluxes for dopant constituents in molecular beam epitaxy (MBE) through this compact dopant source. Its small thermal mass gives it excellent responsiveness, reproducibility, and stabilization for advanced doping profiles, plus consistent flux uniformity across an entire platen. Efficient cell heating minimizes thermal load.
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Sound Harmonics and Current Analyzer
H74050100
Audio Analyzer
This analyzer is used as end of line control for electro mechanic components with electric motors, with or without mechanical reduction. While the motor is running at nominal speed, a spectrum and temporal analysis of the sound as well as a current consumption test is performed. Statistical analysis of the data acquired is also performed real-time, expediting the PASS/FAIL decision of the DUT.
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Sound Level Meter
3M SE-402 | VP 185057
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Maschinenbau Haldenwang GmbH & Co. KG.
The 3M SE-402 of quality class 2 is the ideal sound level measuring device for almost every acoustical environment. The frequency weighting can be done according to the characteristics A, C and Z and the time weighting can be set to 'Fast' or 'Slow'. Ergonomically arranged buttons and the clear digital display (resolution 0.1 dB) ensure a high level of user-friendliness.
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Incandescent Light Sources
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Collimated, uniform, 1 inch diameter output beamSupports 75W-300W QTH LampsSupports xenon, mercury, & mercury-xenon arc lampsForced Air CooledRefractive condensing optics attachments availableVariable power supply (purchased separately) with optical feedback (option)Vertically mounted arc lampSide exit port with back spherical reflector
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Remote Plasma Sources
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Semiconductor and Electronic Thin Film applications use plasma sources to generate low-energy ions and radicals to react with material surfaces and chamber walls to remove contaminants and act as a precursor to aid in material deposition. MKS provides multiple options for radical generation including Toroidal and Microwave based Remote Plasma Sources supporting Fluorine, NF3, oxygen, nitrogen and hydrogen process chemistries.
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Sound Monitoring & Matching API based on Sound Similarity Measurement (for Sound Recognition Projects)
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Sound recognition is one of the main application areas of artificial intelligence. Various sound recognition techniques exist and can be used for recognizing speeches, music, environmental sounds, animal sounds, air-borne or structure-borne machine sounds, etc. These techniques contain in common signal pre-processing, feature extraction and feature matching / classification algorithms from a general perspective.
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Open Source Machine Learning server
PredictionIO
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The Apache Software Foundation
Apache PredictionIO is an open source Machine Learning Server built on top of a state-of-the-art open source stack for developers and data scientists to create predictive engines for any machine learning task. It lets you: quickly build and deploy an engine as a web service on production with customizable templates; respond to dynamic queries in real-time once deployed as a web service; evaluate and tune multiple engine variants systematically;unify data from multiple platforms in batch or in real-time for comprehensive predictive analytics; speed up machine learning modeling with systematic processes and pre-built evaluation measures; etc.
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Small Class 1 Sound Level Meter
SVAN 971
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The instrument's new user interface makes both configuration and measurement easier than ever before. For those who don't have time to work with measurement settings, SVAN 971 offers extremely simple operational mode with Start/Stop.
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DC Standard Source
SPS-31
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Kongter Test & Measurement Co., Limited
SPS-31 is specially designed to test analog and digital DC/AC Voltage meter, Current meter energy meter, DC voltage transducer and Current transducer. It is widely applied for test, production and inspection in research institution, national measurement institution at all levels, and meter manufacturer.
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Class 1 Integrating Sound Level Meter System
NK021
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This NK021 system includes a class 1 integrating sound level meter, class 1 acoustic calibrator, protective microphone windshield and is supplied in a hard wearing kit case.
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Singlemode Power Meters and Laser Sources
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The KD Optics range of Singlemode power meters and Laser sources are designed for the testing of SDH, CATV, Telecom and other singlemode links. The power meters are highly accurate with a wide dynamic range, while the laser sources feature a very quick stabilisation time, promoting accurate readings.
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Broadband Calibrated Noise Sources
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Fairview Microwave’s calibrated noise sources cover frequency bands from 10 KHz to 18 GHz. Their performance specifications include output ENR levels ranging from 15 dB to 30 dB and typical VSWR levels as low as 1.25:1. Depending on the model, calibrated frequency points are at 10 MHz, 100 MHz, 1000 MHz, 2000 MHz and 1 GHz steps. The temperature coefficient of these noise sources is < 0.01 dB/°C and noise output variation is < 0.1 dB/%V.
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Sound Lever Meters
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Guangzhou Amittari Instruments Co.Ltd
The Sound Level Meter is divided into two types: ( AS-156A Accuracy : ±2dB), (AS-156B Accuracy : ±1dB ). Can memorize 30 groups of measurement results and measuring conditions. Permits choice “A” / “C” / “F” weighting and “Fast” / “Slow” response times. Offers 4 measurement parameters: Lp ( soundlevel). Leq (Equivalent Continuous A Sound Level). Lmax (Maximum Sound Level) and LN (Percent of all readings over alarm value set).
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Source - 20 GHz Source with Amp Attenuator
RI8554A
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Automated Instruments, Powerful Development Tools and Worldwide Support
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Sound Velocity, Temperature and Pressure for Underwater Vehicles.
UV-SVP
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Designed for Underwater Vehicles where space is at a premium, the UV-SVP is based on the Valeport miniSVS. Incorporating Valeport’s class-leading time of flight sound speed sensor, a PRT temperature sensor and a 0.01% pressure sensor in a compact package weighing just 750 grams (in air), the lightweight titanium housing gives a depth rating of 3000m. A wide range (9-30V DC) isolated power supply and RS232 communications complete the package.
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Data Logging Class 2 Sound Level Meter
Castle Sonus GA216L
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The Sonus GA216L Sound Level Meter is a fully compliant, integrating and data logging instrument, capable of a wide diversity of applications including Noise at Work and Environmental Noise monitoring.
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Open Source Phasor Measurement Unit
OpenPMU
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The OpenPMU project delivers a fully open source Phasor Measurement Unit for power system analysis and research. OpenPMU is a flexible modular system for the development of Synchrophasor technology. The concept of OpenPMU is to break down the functions of a Phasor Measurement Unit into three core subject disciplines. These are:
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Sound Level Meter
DE-3301
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LCD Display4 digits LCD DisplayLow Battery display on LCDMeasuring Range30~130dBFrequency WeightingA,CDynamic Range50dBFrequency Range31.5Hz~8kHzTime WeightingFast125 ms
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Light Source
FiberPal OT-3000
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The OT-3220/3221 is designed for a high performance stabilized laser source, especially in practice for FTTX networking installation and maintenance fieldworks environment requirements. It is usually applied as stable laser sources for wide range of optical testers and tools in optical fiber cabling and transmission systems.
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Class 2 Sound Level Calibrator
SPC70
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The SPC70 is a Class 2 sound level calibrator suitable for periodic testing of sound level meters and verifying their accuracy before and after readings, in accordance with international standards. The SPC70 is simple to use and provides a 1kHz reference at 94dB and 114dB. The output is accurate to 0.5dB with low levels of harmonic distortion. The SPC70 is compatible with the Martindale SP79 Class 2 Sound Level Meter and other meters with microphones up to 25mm.
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SLED Source Driver
S-108
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SLED Source & Driver slot module of FOTS system is an efficient module that can drive a stable high power broadband source and modulate a high power SLED to output a high bit rate optical signal. As a high power broadband SLED source, this module can drive the maximum output power of more than 14 dBm and has a stable wideband source characteristics of >90nm@-20dBm/nm. As a high current (400mA) modulation technique, it shows a high power and high bit rate digital signal of > 155 Mbps with > 13 dBm peak power.
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Sound Level Meter
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*Max & Min Measurement*Over Range Display*Under range display*A & C Weighting*FAST & SLOW response*Analog AC/DC Outputs for connection to frequency analyzer or X-Y shaft recorder*Datalogger function*Adjustable Alarm Levels*Backlight
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Gridless End-Hall Ion Sources
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Veeco's Gridless End Hall Ion Sources provide high beam current for vacuum coating processes.
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Broadband Fiber Optic Light Sources
ASE Sources
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Broadband fiber optic light sources utilize amplified spontaneous emission (ASE) within optically pumped rare earth-doped fibers. The spectral width of such light sources can be set by the developer in a range from a few nm to the full width of the emission spectrum of the active ion (e.g. erbium ion).
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C-Band ASE Light Source
ASE5000
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Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai ASE5000 series is C-Band ASE light source with featured with high stability and high output. It is mainly applied for testing of C-Band optical components and optical communication equipments as well as Fiber Optical Sensor etc. Huatai ASE5000 has three types of exterior structure, suitable for different customer’ requirements.
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Programmable DC Power Source
D Series
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The programmable DC power supply is equipped with active power factor correction to improve circuit efficiency. The full range input voltage makes it suitable for most industries and countries without requiring a voltage conversion switch.
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USB-4432, 102.4 kS/s, 100 dB, 0.8 Hz AC/DC Coupled, 5-Input Sound and Vibration Device
780421-01
Sound and Vibration
The USB-4432 is designed for sound and vibration measurements. Four of the input channels incorporate integrated electronic piezoelectric (IEPE) signal conditioning for accelerometers and microphones and built-in antialiasing filters that automatically adjust to your sampling rate. The fifth input channel does not include IEPE support.
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Sound Level Meters
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Cirrus Research offers a comprehensive range of Class 1 and Class 2 handheld sound level meters, ideal for all noise measurement applications from basic noise assessments to detailed acoustic analysis. IOur range of noise level meters spans simple instruments that provide the measurement of sound pressure level, integrating-averaging instruments that provide Leq and occupational noise functions, as well as precision data logging noise meters with 1:1 & 1:3 real time octave band filters and in-measurement audio recording. Trusted by professionals, our sound level meters deliver accurate, reliable results for workplace noise monitoring, environmental noise surveys, and industrial noise assessments.





























