About IKEA in musical terms - how to build music and this time a little about Harddisk recording - by Claes Holmerup
It's time again for a small music article. Since none of the readers has asked any questions (do you REALLY know everything - and what in heaven's name am I doing, sitting here writing?), I'll immediately continue the last issue's article.
HARDDISK RECORDING?
This means that you replace the tape recorder with a computer with the right
software and a harddisk. Most of you probably already know in general terms how a
sampler works - it records sound by taking samples of the signal (that's where the
name comes from) and record these into the memory.
When working with harddisk recording, you don't record into the memory, but rather
on the harddisk. This demands some performance from the computer and a fast
harddisk, so just anything won't work. Out of coincidence I just happened to think
of Atari (or C-lab) Falcon and Cubase Audio - the Falcon was constructed for the job,
letting an enthusiastic musician with a limited budget make professional recordings.
PROs and CONs
One disadvantage is of course the fact that you can NEVER saturate the recording
-something that is done very often on analog recorders to get a "fatter" sound.
Another disadvantage before you get the hang of it, is that you have to give each
recording a name before recording it, instead of the analog situation, where you
just hit the record button and go.
That's about the cons I can find - except for the costs that go a little higher
than for an analog setup - but when looking at new equipment, the difference in
price is very well compensated for in the sound quality (if you look at used
equipment, it's another ballgame).
The advantages then? Are they motivated by the price?
Well, that's always a case
of judgment and a dilemma for musicians who want to make good recordings.
You can say that the costs have to stay within a certain limit (if you have a
very limited budget, it generally doesn't allow HD-recording), or you can cross
the border, saying that you want as good sound quality as possible - starting
with a little smaller system that can be enhanced when needed and when the money
allows you to...
The advantages towards tape recording are many.
You get rid of tape noise -totally! The possibilities to edit are immensly better
on harddisk - if you record the vocals in one chorus perfecly, you don't have to
record it again for the following choruses, you just copy it to the next, and the
next...
If your timing gets a little off beat on a note, you can move it so that it gets
right. If you want to, you can make several recordings of the same vocals and
then you paste together the best parts from each - until you get a "perfect"
recording. You get rid of the tapes' sound coloring. You can make mixdowns
internally in the system, without the extra noise that's added if you do the same
on analog tape. I guess I could go on forever adding to the list, but why put
salt in the wounds on those who can't afford it?
HARDWARE REQUIREMENTS
A Falcon with 4 or 16MB RAM, suitable size of a harddisk (see below for details)
and an SVGA monitor. 4MB is enough for "normal" use, but if you want to use the
RAM- and Sampler-tracks in Cubase Audio - or if you have need to see the waveform
images of your recordings when you've recorded a little more audio, you need more
memory and I recommend 16MB.
SOFTWARE
Cubase Audio (if you need a built-in sequencer for the synths) or AudioTracker
(if you only need to record audio). More options have arrived, but I haven't had
the opportunity to try those, to see how they'd do in the competition.
You can also make some additions. I'd recommend something to replace the Falcon's
original inputs with, for example a DAT connected to an S/Pdif interface (which
also enables you to make backups of your valuable recordings - and with extra
software also all program- and data-files on DAT tape), or a JAM-IN2 or JAM-IN8,
which are separate A/D converters with professional, balanced inputs.
So far, Cubase Audio only handles two inputs at once, so the JAM-IN8 is a little
"overkill" with it's eight inputs, but in AudioTracker, it's possible to record
eight tracks simultaneously with the unit. Once you've replaced the inputs on the
computer, you'll probably want to replace the outputs as well. This can be done
by adding a JAM8, which gives you 8 professional, balanced outputs (and the
possibility to send eight harddisk tracks separately to an external mixer). If
you don't need more than four separate outputs, there is a unit called FA-4
available. Otherwise, you can use the DAT as a D/A converter via the S/Pdif
interface, but that would make it a little hard to make master mixes...
WHICH HARDDISKS?
Since about 5MB/track per minute is used, some space is needed. A normal song is
for example four minutes and if you use 8 tracks throughout the song, you need
about 160MB. You normally don't use 8 audio tracks throughput a whole song, but
on the other hand, you might need some extra space for extra takes and editing.
The harddisk has to be able to replay the data with a speed of about 1.2M/s and
with the AHDI driver it may be close to the limit for some HD's. I recommend
HDDriver or SCSI-tools instead, since they give a much higher transfer rate than
AHDI. Most SCSI-HD's of 1GB and above can be used, but you have to be careful
not to try using a calibrating HD, because if the data flow is interrupted, the
replay is stopped with the error message "HD too slow". I can recommend Conner's
harddisks (since Conner has been bought by Seagate, they aren't named Conner
anymore, but rather Seagate Cayman).
Cubase Audio can only work with SCSI-Hd's, while AudioTracker can use either SCSI
or EIDE. You should de-fragment the harddisk every now and then (with Diamond Edge
or CHKDSK3) when you record audio on it, since you risk getting clicks in the
recordings otherwise. With the harddisk situation in mind (1GB HD's are close to
impossible to get hold of), you probably have to count on buying a 2GB HD (f ex
Conner's CFP2105 or CFP2107). If you use AudioTracker and want to use EIDE-HD's
instead, I'd recommend Quantum Fireball which are very fast. If you want to use
EIDE-HD's larger than 1GB, it seems that HDDriver is the only driver that works.
MORE EQUIPMENT
Of course, you need the rest of the studio equipment, like mixer, effects etc,
also with the Falcon system - but those are things that are needed if you use a
reel tape recorder too, so they don't necessarily make the digital system more
expensive.
ANALOG vs DIGITAL
There are people who claim that analog recordings sound better than digital ones.
About this line of thinking, I can only say this: -let them believe so if they
don't understand better!
The goal for all music recording is naturally to make the recording sound as close
to the original as possible. A musician who's been tweaking his personal sound
for months before he starts recording in the studio would be very disappointed if
the recording doesn't sound like he expected. The most demanding music when it
comes to recording, is classical, symphonic music - where most of the listeners
have higher expectations than those listening to pop music. All recordings (with
no exceptions) of classical music are made digitally and this fact should mean
something, wouldn't it? Some people like the coloring effect of the analog tape,
but if you don't want it to sound natural, you don't...
Maybe I should explain what's meant by "coloring": What happens when you record
on an analog tape is that the frequency response and the dynamics are affected
and make the recording sound a little different than the original live
performance. Already in cheap digital systems like the Falcon or the new digital
portastudios, the sound quality is much better than all analog systems (except
if you go up to extremely expensive systems). When you record with a digital
system, you can to some extent get the soft distortion that the analog tape gives
you when it's overloaded, with the help of a valve compressor or valve mic-preamp,
thereby getting a "fatter" sound.
This was a small overview of digital recording in general and if noone dislikes
it, I'll get started on an article about a recording session with Cubase Audio or
maybe I'll go for one of all the suggestions I hope will come to the editor.
Feel free to ask questions - I'll be happy to help you regardless of how stupid
the questions are. Don't be afraid to ask stupid questions - I'm used to them and
besides, I've probably aksed all those stupid questions myself in the past. After
all, questions are the most simple way to learn...
IŽll be back!
Claes
claes@holmerup.com
www.holmerup.com