Microphone 101: An introduction to capturing audio

Failure is an Option
I’ve been wanting to put together video reviews for a while, so I tried a quick test by shooting a chat about my DJI Phantom 3 Pro.  As you can see (and hear), it did not go so well.  Actually, it went significantly worse than well (arguably, it went significantly worse than bad!).  The footage itself was good, but the audio left a lot to be desired.

So, audio became a quest; I wanted to capture good audio and I was going to get to the bottom of it – one way or another. This video is the result of that quest: a brief tutorial and intro for anyone asking themselves the question: how can I record good audio for video?

What’s out, What’s in
You can flat-out forget about relying on your camera’s built-in mic: whether its on your phone, iPad or mirrorless/DSLR.  Built-in mics are designed to pickup everything and anything.  Audio, in a sense, is similar to photography.  It’s  said a good photo is more about what is left out than what is included.  The same applies to capturing audio: it’s what’s left out that makes good sound.  You only want to hear what you want to hear – not everything else in the environment.

Mics: some options
In short, you have 3 options: lavaliers, shotguns, and boom mics.

Lavaliers are what’s commonly known as clip-on mics.  They sit close to speaker’s  mouth to capture the audio.  This allows for the ambient noise to be left out (though a lavalier can be lowered on the wearer to allow more environmental sounds to be picked up).

Shotgun mics are mounted on top of the camera and are used commonly when you have multiple speakers talking directly at the camera.  In such situations, you don’t want to capture and mix audio from multiple lavaliers.  A shotgun is what you’ll go for.  Keep in mind that a shotgun mic is directional: it’ll capture what’s in front of it.  The better it is, the better it is at keeping the “cone” small.

Boom mics are basically highly directional shotguns on an extension pole (aka the boom).   Just about any mic can be a boom mic really- the boom just gets you closer to the speaker and allows you to turn the mic sensitivity down so it picks up less of the sound in the environment.  Just about every movie you’ve seen has used a boom mic for the audio.  Booms are great, but not very practical for most YouTubers as booms are typically at the higher end of the price scale- not to mention you’ll also need an assistant to hold the mic and keep it pointed at you.

Let’s not forget HandHeld mics: handhelds are great because you can be right up to the speaker and eliminate ambient sound.   They also allow you to a great deal of mobility and the ability to pickup audio from multiple speakers (i.e. they’re great for interviews).  They suffer, however, from the disadvantage of being, well, handheld!  I can never use a handheld, it would drive me insane as I am pretty animated and use my hands a lot when I speak.  You’d never hear me because the mic would be everywhere except near my mouth.

What’s In the Tutorial

Shotgun Mics


I also also had a couple handhelds, most notably the Sennheiser MD-46.

Notes on the Audio
You can hear the lavaliers and shotguns in the video- be sure to check it out if you haven’t already.  My two favorite mics were the Rode SmartLav+ and the Sennhesier Clip-Mic Digital (powered by Apogee).  The Apple EarPods were a surprisingly passable option – just about everyone has a set and using them to capture audio is way better than just relying on your camera’s mic.  If you’re the “I like life hacks” type: you now have a new trick up your sleeve!

The SmartLav+and Clip-Mic Digital were pretty close.  The Sennheiser was the stronger mic, but if you’re on a budget, you can’t go wrong with the SmartLav+.

As for shotguns, the Rode VideoMicro and VideoMic Me are basically the same mic with different mounting/connection options.  They were pretty close in sound.  I did prefer the Rode VideoMic Go even though it is the largest of the three.  I also think the two other mics would benefit from a windsock (aka windscreen aka dead kitten) and would yield better audio if used with one.  The said, the nice thing about the VideoMic Me is you don’t need a mount for it – just plug it into your phone/iPod and you’re good to go.  Keep in mind you can easily use any shotgun with your phone if you use something like the iOgrapher.

iOgrapher with Mic and Light

As expected, the Rode NTG3 performed exceptionally well.  I didn’t demonstrate this in the video, but even a small turn of the mic resulted in a change in amplitude.  Be sure to correctly point the mic or your audio will peak and valley all over the place!  Incidentally, the Auray ABP-47B boompole was fantastic.  The built-in cable made connecting, and handling, the NTG3 a breeze.

And, while we’re on the subject of boompoles, the Rode Micro Boompole Pro ($99) was incrediably  light!  You barely know it’s there – especially when using it with the VideoMicro.

What should you buy
This really depends on what you’re doing.  If you’re just starting out, I’d say start with your earbuds and see if they meet your needs.  From there, you really can’t go wrong with the Rode VideoMicro (if you want to go the shotgun route).  The Clip-Mic Digital, again, would be my choice for a lavalier.

Let me know what you end up with, or just ask any questions you have below in the comments.