Re: file format for sound
Re: file format for sound
- Subject: Re: file format for sound
- From: Stephen Blinkhorn <email@hidden>
- Date: Mon, 08 Aug 2011 14:50:11 -0600
On 8 Aug 2011, at 14:37, Bob Sabiston wrote:
I'm not sure I need to go buy a book to learn the answer to this
fairly simple question, do I? After slogging through all the crap
necessary to get synth sound and mixed channels w/ fx playback and
music simultaneously on iOS, I don't really feel like such an
absolute beginner. I just am confused as to why my mp3 playback
does not work with longer files, and in addition I am wondering
whether a 'pure' sound format exists, where you get the samples and
their sequencing all bundled up in a file.
MIDI files contain note/sequence data but no audio. I don't know of a
file format to do what you want (back in the day games would often
embed self contained 'tracker' modules for music purposes).
Stephen
Bob
On Aug 8, 2011, at 3:26 PM, Jim McGowan wrote:
It sounds like you are just starting out with (game) audio, so I
would recommend reading something like Audio Programming for
Interactive Games by Martin D. Wilde. It covers things like MIDI
vs Audio files and a few other basic concepts, so you should get a
good idea of the advantages and disadvantages of each, and when it
would be preferable to use one over the other.
Jim
On 8 Aug, 2011, at 20:05 , Bob Sabiston wrote:
Hello,
I am still starting with Core Audio. I was wondering if there is
a file format I might use for my videogame, which encapsulates
sampled sound with sequencing information to reproduce a song? I
think that might be what a MIDI file does, though I am fuzzy on
how samples play into it, are they/can they be included?
Then, what tools can be used to make songs and save in that format?
Alternatively it seems like much game sound is maybe done with
aiff or mp3 if it is a longer sound, like an entire song? I have
had some success with MP3 playback starting from that Mixer sample
code, but those mp3's are only seven seconds long. I haven't
gotten it to work with an entire 4MB song -- should I be able to
do that using Audio Units on iphone? What is the best way of
playing mp3 songs via Audio Units, if I have a whole Audio Graph
and other sound effect channels etc?
Thanks
Bob
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