Hi,
I have just decided that ADPCM is not my thing. It is good for sounds with
mainly low frequencies, but for really splendid sounds it is useless. You
can hear it crackling and hissing too much. That's one whing I didn't like
about WMA as well, but I'll look into XWMA to see if it is any better. Ogg
Vorbis has proven itself already in Top Speed, so that's another
possibility. But as encryption is more important to me than size, I will
work on that first.
----- Original Message -----
From: "Thomas Ward" <thomasward1...@gmail.com>
To: "Gamers Discussion list" <gamers@audyssey.org>
Sent: Wednesday, June 24, 2009 12:45 AM
Subject: Re: [Audyssey] A new audiogame MP3 demo
Hi Davy,
One of the nice features of XAudio2 is it has its own compression format,
xwma, which seams to have extremely good compression. Of course, alot
depends on how high a bit rate and quality you are using, but it is
extremely good compression. To convert a wav file to a xwma file simply
run a command line tool such as xwmaencode to convert your wav files to
xwma files. For example, opening a command window and typing
xwmaencode Music.wav Music.xwma
would convert a PCM music track to a xwma file with a byt rate of 48000
KBPS. Since that is rather low doing
xwmaencode -b 192000 Music.wav Music.xwma
would create a very high quality xwma music track with better than average
compression.
Of course, if you would rather use something more standard like mp3 files
you can use DirectShow that comes with the Windows Platform SDK or you can
incorperate libvorbus support for ogg. No matter what you use though you
will take a performance hit for using compressed files, and you can not
apply special dsp effects to ogg, mp3, and wma files. So I'd recommend
only using compressed files for large ambience and music tracks.
Davy Kager wrote:
I am also considering the possibilities of compressed audio formats, such
as Ogg Vorbis and ADPCM. I wonder if I can get the sound files reasonably
small while still maintaining the sound's quality. I suppose I'll have to
do a couple of tests on that subject, but any advise is of course pretty
much welcome!
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