APG NOTES ON HOME RECORDING
Creating Sound Files for the Internet
The following describes the method I'm currently using to create the sound
files which I post at the APG site. These are NOT professional recording
techniques, but I believe they are sufficient for preparing adequate recordings
considering the current limitations of PC and internet sound reproduction.
LW
FIRST STAGE - ORIGINAL ANALOG RECORDING
Currently I'm recording to my JVC home stereo cassette deck using an Audio
Technica AT811 (condenser/unidirectional) microphone. The input level
should be adjusted to keep the loudest tones just below the overload line,
but not too soft. I understand that Analog tape is a little more
forgiving than digital in this regard, so you don't need to be too paranoid
about overdriving your recording level.
I play guitar in a classical style position, with my left foot raised on
a short stool, and the microphone is positioned 12" to 18" from the sound
hole, about 6" above the guitar and aimed at the sound hole. To get
rid of fret noise and mechanical sounds (from the guitar) consider moving
the mike a little further away.
SECOND - CONVERT TO DIGITAL AUDIO
I've an inexpensive cassette player to output to my PC
from the player's headphone output to my soundcard input (Sound Blaster
16) using a freebie version of CoolEdit, which has filtering options and
decent editting capability. Actually sounds pretty
good as a WAV file, but takes up to 5 meg a minute!
Just punch the Cool Edit "record" button, turn on the cassette player and
you've got a WAV file uploaded. CoolEdit recommends to record as
16 bit/mono for optimum fidelity/efficiency and also suggests that the
volume of the analog input be adjusted so that the digital signal fills,
but doesn't overrun the borders of the WAV file view screen. I've
yet to figure how to listen over my speakers as I record, but it's got
to be something embarassingly obvious.
THIRD - CONVERT WAV FILES TO REALAUDIO FILE
At the RealAudio Website
there's a free Encoder which will convert your WAV files to RealAudio.
So far the fidelity of RealAudio streaming sound files I've created is
poor relative to the sound of the original WAV file and any help from fellow
recordists would be greatly appreciated. Sure doesn't sound anything
like RealAudio's demo recordings on the internet!
Luckily RealAudio gives several options for recording, and the ISDN mono
sound file gives much better fidelity, but unfortunately can't stream.
By using streaming the music file partly downloads and starts playing while
it finishes loading, giving a very efficient response time. Otherwise
it's the old web-wait.
STREAMING IN REALAUDIO
To stream a RealAudio file create a stream file called "filename.ram" with
an ASCII text writer like Windows Notepad. The text of the file will
simply be the address of the name of the RealAudio file. (Windows
will take exception to changing the suffix on the TXT file to RAM, but
the warning can be ignored.)
Example:
The stream file http://www.oocities.org/BourbonStreet/ballgm.ram
has the text:
"http://www.oocities.org/BourbonStreet/5322/ballgm01.ra" and will
start streaming the sound file in RealAudio.
If you select the sound file http://www.oocities.org/BourbonStreet/ballgm01.ra
instead the sound file will completely download before it starts to play,
not quite as slick, eh? (Thanks to Mike Owings for help)
FOURTH - UPLOADING TO THE FILE SERVER
GeoCities has a very great File Manager interface for uploading and managing
sound files at a website, and there are many commercially available FTP
loaders and similar software. Check with your file server provider
for details on what they recommend. LW
Any suggestions and corrections are appreciated.
LW
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updated 8/30/98