Create your own WAV, your own MP3,
or your CD
is not very ready method to transform a Midi file into soundfile (WAV file
or other). The process is rather complex, depends on your installation,
and always does not give a satisfactory result.
will try to present a simple method, with as much of explanation than
possible. From file WAV obtained, it will be then easy to create MP3 or to
even burn CD.
The PC don't 'play' MIDI, it
subjects this request to a synthetizer
this reason there is not program done everything making it possible to
create a file its starting from the Midi file. It is not the work of the
processor of the PC, but well that of the synthetizer, external, internal
(mounted on the mother board), or placed on a soundcard dedicated.
other hand, it is possible to ask the chart-soundto record what
forwards since the synthetizer towards the chart, and to create a file of
sound of it.
operation is thus solved with the following step:
the PC 'play'
the MIDI file, and it record what is generated by the synthetizer.
necessary for that to have a software of recording. The "recorder" of
Windows is completely insufficient. It makes it possible to record only a
few seconds, and does not allow any adjustment.
soundcard specific are generally provided with a recorder
very powerful. There are also recorders provided with certain software of
treatment of the sound (Nero, Soundforge...) but
this software is not free.
is only one free software, to my knowledge, there acts of 'Audacity'.
The examples given on this page are drawn from this software.
The quality of the transcription
will depend on your synthetizer
synthetizer does nothing but interpret orders. The result will be
different according to your installation. A small synthetizer assembled
on the mother board will not render, and by far, similar results to
a top-of-the-range keyboard of a value of 1000 € or more. But the quality
of the synthetizers provided in series with the PC increased
considerably. With a modern PC, you can thus await a result more than
can listen to the results obtained on my installation (Creative chart '
Live! 5.1) on the
results also depend on the soundfont used. The soundfont is the true alphabet used by the synthetizer. If your
synthetizer accepts the soundfonts in format sf2, you can download the
version 2.1 (12 Mo) which is optimized
for classical music.
After this long preamble, let us
see how to proceed
would be simple if there were not item 3, where it will be necessary to
grope before obtaining a correct result.
1 - prepare the PC
Nothing very difficult, but it is necessary that your PC is perfectly
quiet during the recording. Any sound emitted by the PC will be
recorded. Thus think of closing your
mailsoftware, avoid any
connection of equipment USB which would send a
According to the power of your PC, you will need all the resources of
the processor and the discs. Thus think of
principal tasks which need ressources, the
(especially if it is sound), the
updates, and all the automated jobs (antivirus scan or
Also think that the generated
is very bulky (10 Mo per minute). You must
thus have a partition with a sufficient place (sometimes double of
place, according to the software used). If you doubt the power of your
PC, avoid also a too fragmented disc.
All does that seem complex ? Not as much as that. On a powerful PC,
these measures are useless. And so even an inopportune task was
occuring, it would be enough for you to start again the operation.
2 - Open ' Audacity', or any other program of
3 - Let us start the adjustments:
First, it is necessary to regulate your synthetizer
(your Midi card) to generate a sound of better possible quality:
good balance of bass and
trebble, no saturation of the sound (I
advise you to regulate the level of Midi towards 70 %). These
adjustments depend unfortunately on each configuration, and it is not
possible to say some here. Simply, the sound that you hear by carrying
out one Midi must be pleasant and natural.
Let us pass to the Audacity software.
initially the left framework:
Obviously, it is initially necessary to activate the
menu 'File -> preference', to select a stereo recording
peripherals of reading and recording will depend on your installation. It
is necessary to choose that which corresponds to your
this 'quality' tab, the first 2 boxes are important. The frequency
of 44100 Hz corresponds to the quality of a CD, just as the format of
Still notice in the bar of tool, the drop menu containing "What U
Hear". Click on this box:
see appearing all the channels of your soundcard. The list will depend
on your material. You can choose ' Midi' directly but if the possibility
exists, the choice of "What U Hear" makes it possible to record the total
exit of the soundcard, with all the adjustment of reverberation, of
chorus, equalization, or any other adjustment authorized by your
downstream from the synthetizer.
launching the recording, it is advisable to carry out preliminary tests.
Open the Midi player (Windows Media Player, Media Player
Classic, Winamp, or any other program), select the Midi
file to encode.
much as possible, reduce the window to visualize the two programs
on the record button in Audacity (red button) - you do not trouble
about the white at the beginning of recording, it will be easy to
remove it thereafter. Then launch the
play of Midi.
visualize the recording in progress then. In the
right corner, you
can see the Vu-meters. The red bar all on the right indicates the
maximum of volume reached. If
it is located almost at 0 dB, that means that
the sound risk to saturate. Start again by slightly decreasing the volume
located beside the icon 'micro'
these preliminary tests, do not hesitate to move the adjustments, to find
the point of maximum volume, and to limit it to -5 dB do not use, if your
program allows it, of automatic adjustment of volume, the
behaviour with classical music, where the dynamic changes are very
important, is very ugly.
the project, without saving it. Note all the adjustments which you made.
the general adjustment of volume, which appears generally on the left in
in a window such as below, does not influence the recording.
It is only the adjustment for loudspeakers:
4 - Launch the recorder
a new project, reset the 'MIDI player', and start the
recording on Audacity
- Launch the Midi player
new, you do not trouble the length of the white, they will be removed
6 - Await the end of the execution
7 - Stop the recorder
Click for that on the orange square of Audacity
8 - Save your project
Click on ' File - > to export in WAV' or ' save as MP3 '
can now listen your to your file (button
with green arrow), or to work it over again, by removing the white. This operation
is as simple as with a text editor: your must select
select a part of the
file, then to cut it.
this example, the cursor was positioned to 5 seconds, then '
Edit - Selection - >
from beginning until the cursor'. It any more but
does not remain to cut the selected part.
All does this seem to you long and complex? The first time, it is
certain. Certain parameters should be tested, it is necessary to adapt
what precedes with other software or hardware, but once the method
included/understood, it is simple to implement.
Note concerning the
you wish to realize CD, it is wise to comply with certain rules
concerning the duration of blanks between
Here some general
at the beginning of beach, insert a one second
at the beginning of first track, insert a
three second blank
at the end of the track, insert a ten second
if the track forms part of a work made up of several movements, the
ten seconds are reduced to six seconds - but always 10 seconds
for the last movement.
the last track of CD is followed of a three
Note concerning the use of an equalizer
The Midi rendering is still well far from that of a real
execution, burned on CD. To give more realism to CD, it is necessary
to 'equalize' the WAV file.
Again, the parameters depend
on the souncard and its adjustments. The search for a good sonority
is long and tiresome.
propose to you here the personal adjustments, obtained on the
burning Nero software
Important remark :
Audacity proposes the option 'Generate
MIDI'. This option is not implemented yet in the current version. It was planned for 2004-2005. It will thus
be necessary to wait a little.