Range of ProductsWe design and manufacture an extensive range of products to cover virtually all front-end equipment needed for the precise and reliable measurement and recording of acoustic signals; from the transducer to the input of an A/D converter. These are complemented by a range of more specialised transducers and accessories for more specific applications. |
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Recent Additions
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Handset Positioning System Type 45EAFor testing mobile and cordles phones, the Handset Positioning System Type 45EA positions handsets onto KEMAR Manikin Type 45BM. |
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KEMAR Manikin with Mouth Simulator Type 45BMThe KEMAR ® Manikin Type 45BM is an acoustic research tool with built-in mouth and ear simulators. The manikin simulates the changes that occur to sound waves as they pass a human head and torso, such as the diffraction and reflection caused by each ear. |
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Microphone Calibration System Type 90CAThe G.R.A.S. Microphone Calibration System Type 90CA provides for automated and reliable level and frequency response calibration of measurement microphones. The implemented calibrations methods conform with relevant standards.Click on the picture for more info. |
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CCP Intensity Probe Type 50GIType 50GI is a sound intensity probe for direct connection to signal analyzers or data acqusition devices with IEPE inputs. The probe includes a pair of phase-matched prepolarized precision microphones which meet the requirements in IEC standard 61043* for a class-1 intensity probe. The small rugged ¼″ CCP preamplifiers ensure minimum disturbancies to the sound field for accurate measurements in the full frequency range. Click on the picture for more info. |
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Intelligent Pistonphone Type 42APWith built-in barometric corrections and an LCD for displaying: sound pressure level, A-weighted sound pressure level, temperature in both °C and °F, ambient pressure in hPa. And it has an RS-232 interface for extracting these data. Click on the picture for more info. |
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Low noise level microphone systemsLow noise Level Microphone Systems Types 40HF and 40HH for measuring noise levels which lie below the threshold of hearing. Click picture for more info. |
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Preamplifier Type 26CFWith gain and filter switches. For selecting various combinations of gain and filtering. Gain can be set to either 0dB or +20 dB. Filtering can be set to A-Weighting, Linear or High-pass. Click in the picture for more info. |
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Surface Microphone Type 40PSLow-cost surface microphone for general purpose measurements on planar and curved surfaces. Wide useful frequency range reaching up to 20 kHz and a large dynamic range topping at around 136 dB. Click picture for more info. |
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Telephone Test Head Type 45AATailor-made fixture for testing the acoustic performance of telephone handsets in accordance with international standards and recommendations.Can be set up for testing telephone handsets in accordance with ITU-T recommendations. Click picture for more info. |
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Hearing-protector Fixture Type 45CAFor testing the performance of hearing-protection devices such as ear plugs and ear muffs. Conforms with ISO 4869-3 and can be used with one 1 or two 2 microphones or Ear Simulators for respectively monaural or binaural tests. Click picture for more info. |
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Ear and Cheek Simulator Type 43AGFor measurements on earphones of various types. It simulates the ear and cheek of a human head as well as approximating the acoustic impedance of an average human ear under certain circumstances within a given frequency band. Click picture for more info. |
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Catalogue
CD-rom CatalogueA revised and updated catalogue on CD-rom is available with numerous pictures of our products as well as pull-out charts showing typical setups for noise measurements, calibrations and ear/mouth testing. Click on the picture if you would like a copy sent to you. |
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