- Frequency Devices Inc.
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Low-Pass Filters
Is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter design.
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Microphone Arrays
One of the most important parts of an Acoustic Camera is the microphone array. It determines the spatial distribution of the acoustic microphones and therefore measurement performance of the whole system. In order to achieve the maximum possible performance in any given application, we offer a wide variety of microphone arrays. No matter if the measurement is beamforming, intensity or holography ... we have the right microphone array. For special applications we can design and build custom made microphone arrays according to the requirements of the application.
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Measurement Microphones
SCM
The SCM measurement microphone is a robust, free- field microphone designed for the rigorous environment of a production line without compromising the accuracy, precision, and stability required for R&D.
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Measurement Microphones
The microphone bodies contain the preamplifier. They combine high dynamic range and wide frequency range with low noise. These measurement microphones connect via the ASD Cable to the XL2 Audio and Acoustic Analyzer, e.g. for measurements at remote locations or to reduce acoustic reflections.
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23KHZ Measurement Microphone
M23
The M23 is a precision engineered 23kHz omnidirectional measurement microphone ideally suited for acoustical measurements including loudspeaker design and quality control, sound system setup and troubleshooting, room acoustics, or any application where an accurate free-field measurement microphone is required.
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Measurement Microphones
All microphones are omni-directional and 48V phantom powered. The XL2 Analyzer microphones include an electronic data sheet. The Automated Sensor Detection (ASD) of the XL2 automatically reads this data sheet, and recognizes the microphone model, sensitivity and calibration data. This ensures accurate measurement results.
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MEMS Microphones
A MEMS microphone is an electro-acoustic transducer housing a sensor (MEMS) and an application-specific integrated circuit (ASIC) in a single package.
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Microphone Preamplifier
426A30
1/2-inch preamplifier with 7-pin LEMO connector (for externally polarized microphones)
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Microphone Preamps
Applied Research and Technolgy
Unlock your mic's full potential with advanced features like variable impedance, mid-side processing, and real tube warmth.
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Microphone Preamplifier
HT426E01
Nominal Microphone Diameter1/2Frequency Response Electrical Noise(at 22 C) (Flat 20 Hz to 20 kHz)Distortion (3 V rms input at 1 kHz)<-70 dB<-70 dB[1] EnvironmentalTemperature Range (Operating)-40 to +248 FExcitation Voltage 20 to 32 Constant Current Excitation 2 to 10 mA
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ICP Electret Surface Microphone
130B40
Low-profile surface pressure microphone and preamp, prepolarized
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Microphone Interfaces
MEMS
Listen offers 2 MEMS digital microphone measurement interfaces from Portland Tool & Die, the laboratory-grade DCC-1448 and the low cost PQC-3048 for production line use.
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Outdoor Microphones
Is a measurement microphone for all-weather conditions designed for use with sound level meters.
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USB Microphones
Easily used with a Windows PC/tablet/laptop to record bat calls and other ultrasonic Is esignals with the highest quality.
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HEAD artificial head microphones
HSU III
The HEAD-Shoulder-Unit HSU III is an artificial head microphone for binaural recordings.
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Precision Condenser Microphone
377B11
Performance:Nominal Microphone Diameter:1/2 CharacteristicPressureOpen Circuit Sensitivity: 50 mV/Pa50 mV/PaInherent Noise<15 dB(A) re 20 Pa<15 dB(A) re 20 Pa Dynamic Range (3% Distortion Limit)>143 dB re 20 Pa>143 dB re 20 Pa EnvironmentalTemperature Range (Operating)-40 to +248 F-40 to +120 C Temperature Coefficient of Sensitivity (+14 to +122F (-10 to +50C))0.005 dB/F0.009 dB/C
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Microphones & Accessories
Applied Research and Technolgy
Creative choices for recording, and USB mics for content creators.
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Omni-Directional Test and Measurement microphone
TM1 - TM1 PLUS
The TM1 is a 6 mm pre-polarized condenser microphone used for test and measurement applications. The TM1 is known for its linearity, accurate response, consistency, ease of use and affordability.
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Low Light USB Camera With Microphone
Conversa
Conversa, camera for conversation (See3CAM_CU38), is a 3.4 MP low light USB 3.1 Gen1 camera with built-in stereo microphone providing 16bit audio @48KHz. This low-light USB camera is the next advanced version of our flagship product See3CAM_CU30, with built-in stereo microphone for crystal clear sound. It is a plug-and-play (UVC and UAC) compliant USB 3.1 Gen1 SuperSpeed camera and is also backward compatible with USB 2.0 host ports. It has S-mount (M12) lens holder which allows customers to cho...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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SparkFun Analog MEMS Microphone Breakout
SPH8878LR5H-1
The SparkFun Analog MEMS Microphone Breakout makes it easy to work with the SPH8878LR5H-1 analog microphone from Knowles. This board features an OpAmp to bring the output of the microphone to a usable level, allowing you to plug directly into an ADC on a microcontroller or something like the SparkFun Spectrum Shield.
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SparkFun Electret Microphone Breakout
This small breakout board couples an Electret microphone (100Hz--10kHz) with a 60x mic preamplifier to amplify the sounds of voice, claps, door knocks or any sounds loud enough to be picked up by a microcontroller’s analog-to-digital converter. Each breakout comes fully assembled and works from 2.7V up to 5.5V.
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Advanced Pressure Calibrator
BetaGauge 311
The BetaGauge 311 Advanced Pressure Calibrator is a general purpose, high accuracy pressure calibrator with special features intended to facilitate calibration of mass flow computers.
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Microphone Pre-Amp Audio Interfaces
Analog Devices mic pre-amp audio interfaces provide a high fidelity, high performance solution for audio products. Specifications for this family include ultralow 1.5 dB noise figures, 140 dB gain range, and high gain capability. Operating in an extended industrial temperature range of –40°C to +85°C, this portfolio of mic pre-amp audio interfaces supports many applications, including precision instrumentation, active filters, low noise amplifier front ends, surveillance systems, computerized vo...show more -
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Precision Lab Calibrator
3001
The Precision Lab Calibrator combines the power and features of the venerable M2001 lab calibrator, with the addition of an isolated measurement channel. This isolated measurement channel consists of two (2) voltage ranges: 10V and 100V DC, MilliAmp range 0 to 52 mA, MilliAmp range with simultaneous 24VDC power, selectable 250 Ohm HART resistor and accuracy of 0.005% of reading on voltage ranges.
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Loop Calibrator
MS-420
The Loop Calibrator is a multi-purpose process loop tool that offers high accuracy in an ultra-small, rugged package. A single pushbutton selects one of five current outputs (4, 8, 12, 16 or 20 mA), which can drive up to 300 Ohms, or can act as a 2-wire simulator with an external loop power supply of up to 30 VDC.
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Omni Measuring Microphone
PVR™ 2
Omni-directional microphone for free-field measurement. With a highly reliable circuit and a 1/4" pre-polarized condenser capsule, it boasts high stability, low distortion and low noise in performance. Its excellent flat frequency response makes it ideal for sonic analysis systems and recording.
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Temperature Pressure Calibrator
BetaGauge 321
The temperature pressure calibrator provides pressure measurement flexibility over any competitive unit. It provides 0.025% FS accuracy on both internal, isolated and stainless steel pressure sensors.
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Pressure Calibration Gauge
BetaGaugePI
The pressure calibration gauge combines the accuracy of digital technology with the simplicity of an analog gauge, and achieves performance, ease-of-use, and rich feature set.
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ICP Microphone System
HT378B02
This model includes a 1/2" microphone cartridge, a mated preamplifier with TEDS, and system calibration. Click the following for individual component information.