mikroUši ultrasonic horn
Passive acoustic horn · up to +18 dB in the high frequencies · fits the Uši mount
Ultrasonic amplification horn for the current version of the mikroUši series microphones. It provides up to +18 dB of passive acoustic gain in the high frequencies and into the ultrasonic range (see the chart below), which makes it especially useful for recording birds, insects and bats for research purposes. Be aware that the horn severely alters the frequency response of the microphone — recordings will not sound "natural".
In the box: 1× mikroUši ultrasonic horn (microphone and Uši mount not included)
- Up to +18 dB of passive acoustic gain in the high frequencies and into the ultrasonic range
- No power, no electronics — pure acoustics
- Made for birds, insects and bats
- Outer diameter fits the Uši mount for stand mounting
- Open design — the STL file is available for download
| Parameter | Value |
|---|---|
| Compatible microphones | mikroUši, mikroUši Pro, mikroUcho Pro (current version) |
| Acoustic gain | Up to +18 dB in the high frequencies (passive) — see the chart below |
| Mounting | Outer diameter fits the Uši mount |
| Weight | 6 g |
| Sold as | Single (one per microphone) |
| 3D model | STL on GitHub |
Gain of the horn relative to a bare mikroUši (0 dB), 1/1-octave smoothing.
- Slide the horn over the microphone capsule until it seats. No tools are needed.
- Point the horn at your subject. Every microphone becomes directional at ultrasonic frequencies, and a horn more so — aim it like a lens.
- Start with lower gain than you would use without the horn. It adds up to 18 dB of acoustic level in the high frequencies, so loud or very close sources will overload the microphone sooner than usual.
- For stand mounting, seat the horn in the Uši mount — its outer diameter matches the Uši body.
- To hear what you recorded, slow the file down — see how to record ultrasound.
Not for natural-sounding recordings
The horn strongly colours the frequency response: the boost starts around 1 kHz and rises into the ultrasonic range, while the low end is left untouched. Use it for research and detection work, and take the horn off for ordinary ambience recording.
- mikroUši horn — STL file (GitHub, LOM-instruments/mikroUsi-accessories)