Music Production and Mixing
Tips & Tricks
By Ian Waugh
What makes a pro recording pro?
What is the "sound" that the pros get and how can you make your recordings sound more professional?
The simple answer is - there's no simple answer. But
with careful listening and a little experience you can create excellent results with modest
equipment.
Good mixing starts ear
The first and most important item of equipment is - who
knows? Anyone? It's your ears! Sorry to tell you this, but listening to ten hours of Rave at 110dB will do
nothing for them and you might as well give your mix to a turtle as try to mix with misused ears.
Listen to commercial recordings of mixes you like,
analyse them, listen for the effects and get to know what constitutes the sort of sound you're after.
Mixing secrets
There's no hidden secret to getting a good sound, but if
we had to sum up the secret of mixing in two words it would be this - EQ and compression. Okay that’s three
words.
These are probably the two most important tools used by
professional producers. However, like any tools, if you don't know how to use them you'll be carving Habitat
tables instead of Chippendale chairs.
That's where your ears and experience come in. Here we
have assembled some production ideas, suggestions, tips and tricks but they can only be guidelines and need to
be adapted to suit your material. There are no presets you can switch in to make a bad recording sound good. And
if your original material has been poorly recorded not even Abbey Road could salvage your mix. But follow these
suggestions and see how much your mixes improve.
Get the level right
You can't push the levels when recording digitally as
you can when recording to tape but you still want to get as much signal into the system as possible. This means
watching the levels very carefully for clipping, and recording at an even and constant level.
Some recording software lets you monitor and set the
input level from within. Some expect you to use the soundcard’s mixer while others have no facility for
internally adjusting the input level and expect you to set this at source.
Monitors
Your ears are only as good as the monitors they listen
to. DO NOT expect to produce a good, pro mix on tiny computer speakers. It may sound fine on a computer system,
but try it on a hi-fi, in a disco and through a car stereo.
Oddly enough, you don't necessarily need the most
expensive Mic. Many top artists use what some might call "average" Mics because they work well and get the job
done. You can spend a wad on a large diaphragm capacitor Mic (yes, they're good for vocals) if you have the
lolly but check out dynamic Mics which are much more affordable and can be turned to several tasks.
Mixing MIDI and audio
One of the great things about computer-based recording
is that the parts can so easily be changed, edited and processed. It's also so easy to combine MIDI and audio
tracks and many musicians use a combination of sample loops, MIDI parts and audio recording.
Audio recordings are generally guitar and acoustic
instruments such as the sax and vocals. Incidentally, the best way to record guitars is by sticking a Mic in
front of its speakers. You can DI them and process them later and this may be cleaner but for a natural guitar
sound a Mic’ed amp is hard to beat.
It's not necessary to record drums live and, in fact,
it's difficult to do and retain a modern sound. You can buy off-the-shelf MIDI drum riffs and audio drum loops,
or program your own. The quality of the gear which makes drum noises these days is such that anyone with a good
riff can sound like a pro.
Mixing MIDI
As MIDI and audio parts appear on the same screen in
modern sequencers, it's very easy to arrange them into a song. However, when you come to mix everything down
there's another consideration. If you are recording to DAT you can simply route the audio and MIDI outputs
through a mixer and into the DAT machine.
However, if you want to create a CD you must first
convert the MIDI parts to audio data. The entire song can then be mixed to hard disk and burned to CD.
Converting MIDI to audio can have another benefit and that's the ability to process the MIDI tracks using
digital effects.
Effects
There are three positions for effects known as Master,
Send and Insert. Use the Master for effects you want to apply to the entire mix. These will often be EQ,
compression and reverb.
Although giving each channel its own Insert effects is
kinda neat, each one uses a corresponding amount of CPU power. So if your computer is struggling and if you're
using the same effect on more than one channel, make the effect a Send effect and route those channels to
it.
Many pieces of software let you apply an effect Pre or
Post fader. With Post fader, the amount of sound sent to the effect is controlled by the fader. With Pre fader,
the total volume level of the signal is sent. Post fader is the usual default and the one you'll use the
most.
EQ
EQ is the most popular and the most over-used effect.
Yes, it can be used to try to "fix a mix" but you can't make a silk purse out of a sow's ear as me Gran used to
say and what she didn't know about mixing could be written in the margin of the book of honest
politicians.
But before you start messing with EQ - or any other
effect for that matter - make sure you have a decent set of speakers. Have we said that already? Oh, must be
important, then.
There are plug-in effects such as MaxxBass which can
psychoacoustically enhance the bass frequencies to make it sound better on smaller speakers. However, this is by
no means the same as getting a good bass sound in the first place by observing good recording
principles.
EQ can enhance a mix to add gloss, fairy dust, shimmer,
sheen, a sweetener or whatever you want to call it to the final production. It can be done with enhancers and
spectralisers, too, although these tend to mess with the harmonics which some producers don't like. However,
don't dismiss them out of hand.
General EQ lore says that you should cut rather than
boost. If a sound is top-heavy, the temptation is to boost the mid and bass ranges. But then what usually
happens is you start boosting the upper range to compensate and you simply end up boosting everything and you're
back where you started - only louder!
The reason why cutting is preferred is that boosting
also boosts the noise in the signal which is not what you want. Try it. Boost every frequency and listen to the
result. If you think it sounds okay, fine. What do we know?
But when you're fiddling, do keep an eye on the output
meter. Boosting EQ inevitably means increasing the gain and it's so-o-o-o easy to clip the output causing
distortion which does not sound good.
Finally, check EQ changes to single tracks while playing
back the entire piece. In other words, listen to the tracks in context with all the other tracks. It may sound
fine in isolation but some frequencies may overlap onto other tracks making the piece frequency rich in some
places and frequency poor in others.
Reverb
Reverb creates space. It gives the impression that a
sound was recorded in a hall or canyon instead of the broom cupboard. Recording lore suggests that you record
everything dry, with no reverb, so you can experiment with a choice later on. You can't un-reverb a track once
it's been recorded.
The more reverb you apply, the further away sound will
seem. To make a vocal up-front, use only enough reverb to take away the dryness. Vocals don't want to be mushy
(lyrics can be mushy) so use a bright reverb.
A common novice error is to swamp everything with
different types of reverb. Don't - it sounds horrible!
Mixing down
You've done all the recordings, done the edits, applied
the effects and now it's time to mix everything into a Big Number One Hit! Before you do, go home and have a
good night's sleep. Have two. In fact, sleep for a week.
Yes, we know you're hot and raring to go but your ears
are tired. They're falling asleep. Listen carefully and you might hear then snore!
There is a phenomenon known as ear fatigue and
consistent exposure to sound, especially the same frequencies, makes our ears less responsive to them. Goes back
to the bit about spending your life in a Rave club - you'll never be a master producer. If you try to mix after
spending a day arranging, your ears will not be as responsive, so do them and your mix a favour by waiting at
least a day.
Now, go forth and mix! And don’t forget - you get better
with practice. For more information about mixing, pick up a FREE copy of Creating the Perfect Mix at www.making-music.com.
About The Author: Ian Waugh is one of the UK's leading hi tech
music writers and creator of www.making-music.com. He has written
for most of the major - and not so major - hi tech music magazines in the UK and many general computing titles
both offline and online. His output numbers over 2,000 articles, features and reviews and he has written several
books and albums. He is the author of the "Quick Guide To..." series which includes the Quick Guide to Dance
Music, Digital Audio Recording, MP3 and Digital Music and Analogue Synthesis.
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