Microtech Gefell designs, manufactures and supplies microphones and acoustic systems. A highly customer and application-focused approach is taken to develop and create optimally designed products that meet real-world demands in terms of performance, durability and their practical daily use.
Every single product is assembled by hand by their specialists, then tested and calibrated. The vast, combined experience of their team ensures that product quality is maintained too the highest level and indeed, continuously improving.
Even the complete manufacturing process is, as far as possible, carried out in-house, and ranges from fabricating the membranes, the microphone capsules, and the electronics, right through to the housings and the mechanical components.
Microtech Gefell products have earned a worldwide reputation amongst professional users as precise and reliable acoustic measurement tools for all industries including environmental applications, automotive, aerospace and research and development.
Measuring Microphone Capsule MK 301 E
The 1/4 "measuring microphone capsule MK 301 E is designed for acoustic measurements in research, development and industry and is also used in…
Measurement Microphone Capsule MK 255
The MK 255 has a free field equalised frequency response of the transmission factor and is specially designed for acoustic measurements in a free…
The 1/2 "measuring microphone capsule MK 231 E is used for acoustic measurement technology in acoustic couplers and in diffuse sound fields.…
IEPE conditioning module M 29
The M 29 is used for signal processing during dynamic measurements with piezoelectric IEPE sensors for acceleration, force and pressure or IEPE…
Measurement Microphone Preamplifier MV 240
The MV 240 digital is a 1/2 "measurement microphone preamplifier with an integrated analogue-digital…
Sound Calibrator 4010
The 4010 is a sound calibrator conforming to IEC 60942 class 1 and ANSI S1.40 for the calibration and the verification of microphones and sound level…
Measuring Amplifier with Power Supply MN 921
The MN 921 is a one-channel measuring amplifier with a power supply unit for measurement microphones. Between the input and output there is a…
The 1/4" Measuring Microphone MM 310 offers facilities for the use of a high-quality prepolarized measuring microphone capsule type MK 301 E on…
Weatherproof Microphone WM 210
The WM 210 is a weather proofed measuring microphone for outside use under gentle weather conditions (drizzle, light wind, fog etc.) within a…
Sound Intensity Probe SIS 190 0.5″
Due to its two-channel technology the Sound Intensity Probe makes it possible not only to measure sound pressure levels, but also to record the sound…
Measurement Microphone Capsule MK 290 E
The MK 290 E is a selected pair of 1/2″ measuring microphone cartridges for sound intensity probes.…
The 1/2 "measuring microphone MM 203 opens up the possibility of using a high quality, externally polarized measuring microphone capsule MK 221 on…
The 1/2 "measuring microphone MM 210 opens up the possibility of using a high quality, pre-polarized measuring microphone capsule MK 250 on…
The 1/2 "measurement microphone MM 225 opens up the possibility of using high quality, pre-polarized measurement microphone capsule MK 255 on…
The 1/4 "measuring microphone MM 302 opens up the possibility of using high quality, externally polarized measuring microphone capsule MK 301 on…
Measurement Microphone M 370
With the 1/4 "electret measuring microphone M 370, a sensor with the standards of modern multi-channel measuring technology is offered, which can…
The 1/4 "electret measurement microphone M 372 is a sensor that can be connected directly to the analogue audio inputs of computers or mobile…
The M 373 1/4 "electret measurement microphone is a sensor that can be connected directly to the signal inputs with 48 V phantom power that is…
Building Acoustics: What, When, Where and How to Measure?
Under the Building Regulations, Approved Document E (ADE) 2003 (as amended 2010, 2013, 2015) sound testing between residential dwellings is a requirement for building control sign-off. What to test? Under ADE, a full set (comprising of 2x airborne wall tests, 2x airborne floor tests and 2x impact floor tests) is required to sign off up […]
Measuring Mouth Simulators
Anyone who's interested in measuring the performance of headsets, smart devices, telephones, earbuds and the like should be familiar with the need for a mouth simulator. This is a kind of 'standardised' loudspeaker, which emulates the frequency and dispersion characteristics of the human, and is also often found built-in to head and torso simulators. A […]
Why am I getting LA,eq values below the LA,90. Surely that's impossible?
No, it's not impossible at all, and probably it is related to measuring low levels. By having a think about how statistical levels are calculated, all should become clear. Firstly, the LAeq is the A-weighted equivalent energy over a certain period. It's independent of time weighting (e.g. F), and the measurement range of the instrument […]
SoundCheck 19 Released
Listen have recently announced the release of SoundCheck 19. This update includes powerful advancements for users making multichannel measurements. The single channel RTA is replaced with a new multi-channel version for viewing multiple signal paths simultaneously, a new RT60 room acoustics module is available, and WASAPI-exclusive mode and AmpConnect 621 control are added. See all […]
gfai tech Announces an Exciting New NoiseImage Module
gfai tech has recently announced the release of a new feature for their software NoiseImage, DynaBeam. Because of this, scanning a 3D model with just your Acoustic Camera and representing the noise image results on it, is now possible. NoiseImage is a powerful software for acoustic measurements in fields such as the automotive industry, aerospace, […]
Microtech Gefell: The Old New Kid on the Block
In 1928, Georg Neumann in Berlin made the world's first condenser microphone, and his company became legendary in the world of studio microphones and music recording, and still today, the famous U87 microphone is a standard in that field. After Germany was split by the Iron Curtain after the war, his company moved to Gefell, […]
Calibration in the age of COVID-19
Since the country locked down in March, questions have arisen regarding calibration of instrumentation, either in the laboratory or in the field, and the implications of extended periods outside the recommended calibration intervals. When noise monitoring equipment is installed on site, it will be as the result of a planning condition, for example, which will […]
Why Use a Class 1 Sound Level Meter or Noise Monitor?
To perform professional acoustic measurements, you need kit which meets a high standard of performance, after all, legal metrology has consequences. For example, if a noise limit is imposed on a construction site, you need to know with a demonstrable level of confidence, that your measurement is correct. In the sound level meter world, the […]
How to Use an Acoustic Camera
What is an acoustic camera? An acoustic camera is used for locating and visualising sources of sound. It uses a microphone array which processes sound signals for sound analysis and to establish the location of sound sources. Some acoustic cameras, such as the acoustic camera from gfai tech, also use a patented camera combined with […]
What Makes Good Building Acoustics?
Good building acoustics is about controlling the quality of sound inside a building so that it is kept at a reasonable and comfortable level, while also suppressing noises coming from outside of the building. This will include: Achieving good speech intelligibility in a theatre, restaurant or railway station Enhancing the quality of music in a […]