Listen Inc
Listen, Incorporated specializes in PC-based test and measurement systems used for production testing and research and development of electroacoustic products including loudspeakers, microphones, hearing aids, communication headsets, analog and digital telephones, cell phones, and voice over Internet protocol (VoIP) phones.
- (617) 556-4104
- 617-556-4145
- sales@listeninc.com
- 580 Harrison Ave.
Suite 3W
Boston, MA 02118
United States
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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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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 adjustment to new DUTFlexible microphone mounting for both front/backside speakers as well as edge-mounted speakersHigh quality, high sensitive 1/4” CCP measurementmicrophone included (G.R.A.S. 46BL)Individually calibrated frequency response** Compared to reference measurement in anechoic room
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Single Channel Microphone Power Supply
SoundConnect Microphone Power Supply
SoundConnect is a cost-effective, single-channel microphone power supply for audio test applications.
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The SoundCheck Amplifier
SCAmp Audio Test Amplifier
SC Amp is the world’s only dedicated audio test amplifier. Specifically designed for the audio test market, it incorporates several features unique to the needs of audio test and measurement, and unnecessary features found in regular audio amplifiers have been eliminated to keep production line operation simple and error-proof.
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Power Supply and Current Monitor
DC Connect
DC Connect enables measurement of current consumption of battery operated and other low voltage devices such as hearing aids
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Known impedance for use in loudspeaker measurements
Impedance Box
An impedance box is necessary for measuring the impedance of a loudspeaker. Listen Inc.’s impedance box contains a 0.25Ω resistance. This value is suitable for most loudspeakers, but may be easily swapped out for a different value by the user if speakers with a particularly high or low impedance are being tested. It is available with either XLR or 1/4″ balanced connectors. Please specify type of connectors when ordering.
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Digital Serial Data Audio Interface
PIO-9216
For accurate testing of devices that use the I2S, Left Justified, Right Justified and TDM audio data formats.
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USB Controlled Loudspeaker & Microphone Test Interface
AmpConnect™ ISC
AmpConnect ISC is an all-in-one audio interface that simplifies your test setup and operation. It is a single, rugged, rack-mountable piece of hardware containing a high-accuracy audio interface, impedance box, amplifier, headphone amplifier, 2 microphone power supplies and digital I/O. It replaces multiple hardware devices, connecting to your computer via a single USB cable, and it is fully controlled by SoundCheck. This simplifies setup and calibration, eliminates cabling and reduces connectivity errors, as well as reducing overall system cost.
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Audio Interfaces
Lynx
Lynx offers a range of audio interfaces that work well with SoundCheck. Listen supplies Lynx interfaces fully tested and pre-calibrated for use with SoundCheck.
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Software-based Electroacoustic Test System
SoundCheck
The SoundCheck®system from Listen includes everything you need to perform audio measurements on a wide range of devices – the software, the audio interface, other test interfaces and accessories, and test sequences. The system is centered around the SoundCheck software. This powerful package controls and communicates with the measurement hardware, and includes all the stimuli, algorithms and analysis functionality needed to develop and run virtually any electroacoustic or audio electronic test. It is paired with hardware ranging from a simple, all-in one audio test box to sophisticated discrete components for a complete test system. In addition to Listen hardware, a range of 3rd party products and test accessories are fully supported within SoundCheck.
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For accurate testing of headphones, microphones telephones and loudspeakers
Artificial Mouths, Ears, and Couplers
Listen supplies artificial mouths, ears and ear couplers from Brüel and Kjær, GRAS and more.
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Manikins for realistic simulation of the acoustic properties of a human
Head & Torso Simulators
If you need to carry out realistic in-situ measurements of headphones, telephones or hearing aids, you need a Head and Torso Simulator such as the B&K ‘HATS’ – Type 4128D or GRAS’ Kemar to complete your test setup. These manikins have built-in ear and mouth simulators that provide a realistic reproduction of the acoustic properties of an average adult human head and torso. They are commonly used for tests on telephone handsets, headsets, audio conference devices, microphones, headphones, hearing aids and hearing protectors. Please contact your sales engineer or email sales@listeninc.com for more information.
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Overview of features and functionality
NoiseCheck Software
NoiseCheck is essentially SoundCheck without a stimulus editor, as it is designed for manufacturing the noise made by your product. It is a powerful piece of software, ideal for both R&D and production line acoustic measurements of fans, blowers, motors, gears, bearings, pumps and other electromechanical products.
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Bluetooth Measurement Interface
BTC-4148
The Portland Tool & Die BTC-4148 is a complete interface for measuring and characterizing Bluetooth audio devices including handsets, headsets, speakers, car kits and other devices with Bluetooth audio input or output.
