[Haskell-cafe] sdl-mixer loading issue

Luke Palmer lrpalmer at gmail.com
Wed Jun 25 01:17:17 EDT 2008


On Tue, Jun 24, 2008 at 11:16 PM, Luke Palmer <lrpalmer at gmail.com> wrote:
> On Tue, Jun 24, 2008 at 6:34 PM, Norbert Wojtowicz
> <wojtowicz.norbert at gmail.com> wrote:
>>> Attached is a patched version of SDL_mixer 0.5.2 with a C wrapper
>>> for this macro. I'm now able to run loadWAV in ghci.
>>
>> Works for me, thanks!
>>
>> Now I just need to learn how to make my WAVs sound not like
>> computer-generated children voices. For example, using the hback wav
>> files and this:
>>
>> import Control.Concurrent (threadDelay)
>> import Graphics.UI.SDL.Mixer.General
>> import Graphics.UI.SDL.Mixer.Music
>>
>> main = do
>>  openAudio 22050 AudioS16Sys 2 4096
>
> This is probably the issue.  Most wavs are sampled at 44100, not
> 22050, and I think you have to ask mplayer specifically to downsample.

Er, ask sdl-mixer specifically... you knew what I meant.

>  Changing this to
>
>  openAudio 44100 AudioS16Sys 2 4096
>
> should do the trick.
>
> Luke
>
>>  w <- loadMUS "c.wav"
>>  playMusic w 1
>>  threadDelay 2000000
>>  freeMusic w
>>  closeAudio
>>
>> It plays (which is an immense improvement), but I can't get it to
>> sound the way it does from eg. mplayer. I have almost no knowledge of
>> the inner workings of computer sound drivers, so if there is something
>> obvious I'm missing please do speak up.
>>
>> - Norbert
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>>
>


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