Electret

From memory (I may be wrong) – they even supply the electret microphone. ❋ Unknown (2009)

System includes: WR-PRO receiver, WM-PRO belt-pack transmitter, lavaliere electret condenser microphone and hand-held electret condenser microphone. ❋ Unknown (2007)

The tip of the mini jack is used for the DC bias voltage for the electret microphone capsule. ❋ Unknown (2008)

At Bell Labs in 1962, West and his colleague Gerhard Sessler patented the electret microphone, in which thin sheets of polymer film, metal-coated on one side, are given a permanent charge to serve as the membrane and bias of a condenser microphone that helps convert sound to electrical signals with high fidelity. ❋ Ron Buckmire (2007)

Of course you can record straight from the two built in studio-quality electret condenser microphones direct to .wav or .mp3 format with bitrates up to 320kbps. ❋ Unknown (2007)

It works ok with a small sony electret stereo mic I use. ❋ Unknown (2005)

The onboard electret mic is actually not bad if what you're after is a sketch of a musical idea. ❋ Unknown (2005)

It's a pair of electret condensers hidden in a leather fannypackThat's a bum bag, English readers. ❋ Unknown (2005)

This ribbon type microphone had a very large and heavy permanent magnet embodied in the design and must have weighed about 1,000 times more than a modern electret lapel microphone. ❋ Norman F. Joly (N/A)

Attendees will also be introduced to requirements of electrical properties of a material to make an electret, electrical characterization of electret, particle capturing of an electret, properties of electrets by particle loading and effect of fabric defects on the degradation of a filter media. ❋ Unknown (2010)

I have a couple of small electret microphone modules: does the camera supply the DC required for electret mics, or does the mic have to be self-powered? ❋ Unknown (2010)

Dual electret condenser microphones for stereo recording ❋ Unknown (2010)

The Gassonic detectors are based on stainless-steel electret condenser microphone technology, which is said to ensure a high degree of reliability. ❋ Unknown (2010)

The foil-electret transducers they developed for the microphone helps in sound recording and voice communication. ❋ Nsbe (2010)