Microphones already expand what we can hear. New devices can sonify an unheard world even beyond sound. We covered the use of sound as a way of conveying gravitational waves, waves that – while not sound – are far easier for both scientists and lay people alike to grasp when translated to the audible spectrum. And we’ve already seen a world of microphones and devices by Jonáš Gruska, whose LOM label shares both the electronics and music made with them. Well, now Jonáš is back with a new generation of devices. Here’s what they are and how their results sound.

There are several new devices:

Elektrosluch 3+ is an instrument that generates sound from EMF radiation. New in this version: better signal-to-noise ratio, a wider frequency response at both the low and high ends, and a nicer (more purple) cover.

Elektrosluch Mini is a kit version for DIYers – smaller, cheaper, and for those who like to solder. I have a special attachment to this one, as we helped inspire its creation and debuted it at special workshop/performance CDM hosted in Berlin in December.

Elektrouši is a pair of electromagnetic mics you can use with an existing portable recorder (like a Zoom) or for expanded range on your Elektrosluch.

Elektrosluch Priezor (pictured at top) is a hyper-sensitive upcoming instrument that will detect atmospheric sounds in VLF radio bands – very cool. Looking forward to that one.


Read about the whole set on the LOM label site:


But let’s give the new Elektrosluch 3+ a listen, with a wild, wild ride on a tram and bus Jonáš recorded. And yes, if you’re thinking this could completely change your commute, you’re right. (These are battery powered, so you can literally go around listening to these alien sounds instead of, like, music.) The sounds are CC licensed so you can sample them if you choose.

  • high pitched sounds!!!… !

  • julilectric

    Out of Stock already. The diy Kit that is 😢

  • Foosnark

    The bus recording is especially nice.

    I have a passive induction coil mic I run with either a Zoom H4 or a guitar pedal to boost the signal (I should probably buy/build a clean preamp) and occasionally use to grab noise from various devices. My computer and my cellphone are bountiful sources of noisy digital textures 🙂

    Last week I tried using it to listen to my hardware synths from the inside. It does pick up the oscillators from Microbrute, but there’s a lot of other noise in there as well. It works *really* well with my Twisted-Electrons AY3 though; it is only slightly noisier than the noisy square waves that go to the synth’s outputs 🙂

    It also picks up the haptic feedback actuators in my Steam Controller; there’s an app with source code to play MIDI files through those actuators, so I might just adapt it in VST form and turn it into one of the world’s most questionable monosynths 🙂

  • Andrew Childress

    Anybody seen schematics in the wild for building things that “generate sound from EMF radiation”?

    • Jonáš has been open sourcing his designs, so keeping an eye on him is a good way to go.

      The reference I made is to space signals being sonified, and in that case, you don’t need a schematic – you just need something capable of tuning in that EMF band. 🙂

  • Das Butterschnitzel

    To create an electromagnetic field microphone, you can simply wire an Guitar Pickup (Which is a coiled up magnet) to a TRS cable. The Electrosluch isn’t really different to this method.

    • mrkva

      It is, because it has built-in preamplifier and it is stereo.

      • Das Butterschnitzel

        The method is really the same. The in built Pre-Amplifier does not change the way how this is done. And for the Stereo part, just take two Pickups and wire them correctly together… ;P
        I myself have built an Electromagnetic-Mic with a Guitar Pickup and it works like a charm, the Pre-Amplifier isnt really necessary, if you hook it to a mobile recorder.

  • afd

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  • Polite Society

    Here is a guide to make one yourself. Provided by Make and the LOM guys themselves.