Listening is a skill
before it is equipment.

A microphone is a decision about what to leave out. An omnidirectional capsule hears equally in all directions, reaches lowest, has no proximity effect, and is the least troubled by wind and handling. A cardioid rejects what is behind it — useful beside a road — but pays with lifted bass close up and more sensitivity to moving air. A shotgun narrows the forward lobe only above roughly 1–2 kHz, where its interference tube begins to work; below that it behaves much like the cardioid underneath it.

Two numbers matter more than the badge. Self-noise, in dB(A), is the hiss the microphone makes on its own: a quiet wood at night sits near 20 dB(A), so a 20 dB(A) microphone buries what you came for. Sensitivity, in mV/Pa, tells you how hard the preamp must work.

For stereo, choose deliberately. Coincident pairs — XY, mid-side — encode direction as level difference and stay mono-compatible; spaced pairs use arrival time, and sound wider but vaguer.

Quiet is not silence; it is consistency. What ruins an ambience is usually something intermittent — a motorway that rises with the wind, a plane every four minutes, a compressor two fields away.

Scout with your ears before you unpack. Headphones on, gain higher than you will use, record sixty seconds of nothing, then play it back. The noise floor you ignored while standing there will be obvious.

Time beats equipment. Wind usually drops in the hour before dawn and again after sunset, and traffic thins in the small hours. Terrain helps: hollows, dense vegetation, fresh snow and the lee of a ridge all act as sound shadows — though low frequencies bend around obstacles that stop the highs. In the open, doubling your distance from a point source buys about 6 dB and no more.

Write down where you stood, when, which way the wind came from, and what you could hear but did not want. In six months that log is worth more than the recording.

Wind noise is not sound. It is turbulence striking the diaphragm directly, it sits mostly below 200 Hz, and it can clip a preamp while the meters still look calm. Handling noise lives in the same region — vibration conducted up a stand, along a cable, or through your arm.

Defend in layers. Foam handles breath and indoor draughts and little else. A basket or blimp — an acoustically open shell holding still air around the capsule — is what works outdoors. A fur cover over it takes the gusts, at the cost of a decibel or two at the top end.

Decouple the rest. Suspend the microphone in an elastic mount, drip-loop the cable and tie it off so it cannot drum against the stand, and keep your hands still.

Filter last, and gently. A 12 dB per octave high-pass near 80 Hz removes rumble you will never miss. Record flat when you can — but if wind is already clipping the input, engage the filter before the damage, not after.

Recording in public is often legal. That is not the same as fair. A wide ambience of a market is not a conversation; the moment a voice is close enough to be recognised you are recording a person, and the decent thing is to ask.

Some places carry obligations that have nothing to do with property law. Ceremonial grounds, places of worship and many Indigenous sites have protocols about what may be recorded and shared, and the people responsible for the place are the ones to ask — not only whoever owns the land. Protected areas often require a permit for anything beyond personal use.

Wildlife deserves the same restraint. Playing calls back to draw a bird in takes it off territory for your convenience, and many reserves ban it outright. If an animal changes its behaviour because you are there, you are too close.

Publishing is part of it. Blur exact coordinates for vulnerable species and fragile sites, and say what you edited. A recording is a small piece of evidence about a place; it is only worth keeping if it is honest.