Monday 31 July 2017

An Essential Guide To Radio Microphones for Radio Broadcasters - Spacial Audio

Being a radio broadcaster takes smarts, imagination, and a willingness to explore the right tools for the job. To jump from that first idea to a full, professional internet radio station, you must embody the sound of success. And that means looking for microphones that won’t let you down.

Radio industry trends come and go, but they all require great mic tech to be realized. It’s time we gave the lowdown on how they function, what effects they provide, and the kinds of programming they’re suited for. With a solid pick, your station will be crisper and clearer than ever.

So, make yourself comfortable, and plug into Spacial’s radio microphone guide.
The starter question – condenser or dynamic?
If you’ve touched on this subject before, it’s likely you’ve come across two terms: ‘condenser’ and ‘dynamic’. These are the two main mic categories, relating to the way they’re designed, which changes the sounds you’ll produce at the mixing desk.

condenser microphone
First off, let’s look at condenser microphones, the more popular variant for a closed recording space. Also known as ‘capacitor’ mics, they function via a conductive diaphragm – a whisper-thin sheet of metal that’s moved away and towards a large plate inside. Older versions may use foil for the membrane, but most are built from mylar, a fusion of plastic and evaporated steel. Steadily, the sheet changes distance with the metal plate, slowing or speeding up the frequency of the sound waves passing between them.

The capacitor isn’t very large – therefore, it’s able to pick up audio with greater finesse than its dynamic cousin. Very few sound waves will escape it. Low and high frequencies – the bass note from a guitar, say, or a sudden burst of laughter – are rendered in more detail, so the aural texture of your recordings are broader, making for a sharp listening experience. The energy outputs are fairly low; you’ll need an external power source to keep it running.

However, as a radio broadcaster, you may be fond of live reporting, in situations that are thick with intrusive background noise. Dynamic microphones are a safer choice for vox pops, gig streaming, and outdoor interviews. They’re constructed as a heavy coil that has another diaphragm alongside it – this time, though, it vibrates, creating electrical signals in a magnetic field.

You can think of it as a rough-and-ready microphone that’ll cut out the hum of a crowd when you’re focusing on one audio source. Because the components are bigger, it’s less sensitive to sound waves… You’ll be able to record very loud noises with less distortion than the condenser. Oh, and it’s a lot more resistant to wear and tear, so you can use it for ad hoc street reporting.

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