sound/effects/Menu_Item_Selected_Sound_1.ogg is sounds a lot shorted and
crackier ingame than it is actually when I play it using mplayer.

I have no idea how this happens but well, it is a grave issue in my opinion.

Added sample of how it sounds to me ingame.

Other sounds are distorted a well!

bot_sounds/First_Contact_Sound_6.ogg: Ogg data, Vorbis audio, mono, 22050 Hz,
~40222 bps, created by: Xiph.Org libVorbis I
appears to be played fine while

bot_sounds/Start_Attack_Sound_14.ogg: Ogg data, Vorbis audio, mono, 8000 Hz,
~22400 bps, created by: Xiph.Org libVorbis I
does not.

original sounds:
http://freedroid.git.sourceforge.net/git/gitweb.cgi?p=freedroid/freedroid;a=blob;f=sound/effects/Menu_Item_Deselected_Sound_0.ogg;h=e88b9486813e96e77bb2c21ac3b4dd76ecb88f69;hb=HEAD

http://freedroid.git.sourceforge.net/git/gitweb.cgi?p=freedroid/freedroid;a=blob;f=sound/effects/Menu_Item_Selected_Sound_1.ogg;h=169c55a810a6f95a01b34a2ed7d7762d6bb06b78;hb=HEAD

I don't see any reason why all of our sounds wouldn't be standardized to stereo
44.1KHz honestly.

17:40 < matthiaskrgr> sound.c            int audio_rate = 44100;
17:40 < matthiaskrgr> if the sound we play is sampled with a different rate, it
sounds strange
17:42 < matthiaskrgr> so we can either try to fix the code and make the game
choose the sample rate for every sound (is that possible?) or we convert the
sounds which will reduce their quality
17:42 < matthiaskrgr> and make them sound different

We can't fix this in our code. We don't want to implement resampling in fdrpg
;-) It's a SDL bug. See https://bugzilla.libsdl.org/show_bug.cgi?id=58

Hmm, can we play sounds through opengl as workaround maybe?

I tried to convert the affected sounds to 44100 with several tools, but that
made them sound different/less clean or cracky as far as I noticed.

I tried to record (pc-internally) the played audiofiles with audacity but the
result (recording) didn't sound the same as well. :/

No, OpenGL is a graphics library, it doesn't display sound. :)

Mh ok.

I agree with arthur, we should standardize.

On 02/03/2013 05:43 PM, Arthur Huillet - Roundup wrote:
>
> Arthur Huillet <ahuillet@freedroid.org> added the comment:
>
> I don't see any reason why all of our sounds wouldn't be standardized to stereo
> 44.1KHz honestly.
>

Mhhh... We have spatialization of some sounds, right ?
Those have to be mono, or spatialization will not make sense.

Yes, but I wouldn't convert all current stereo-sounds to mono because of that...
I don't remember sounds that had a something like a clear positional direction
coming from played with a normal player.

"Note that you most likely will have to change the sample rate, even if you
already have OGG files that are supposed to replace the music that ships with
the game. The sample rate needs to be at 22050 Hz, not 44100 Hz. This makes the
music sound worse indeed, but if you don't do that, you will have the file
playing at half time. Which is no good. In Audacity, you can find the thing for
changing the sample rate in the lower left corner of the window. Change that to
22050, then export to OGG and you should be fine."

source: http://forums.wolfire.com/viewtopic.php?f=7&t=17652

I tried converting via audacity some months ago but the result sounded a bit
strange.

All sounds were resampled using 'sox' (44.1kHz, 16bits, stereo, -3dB peak level).

Some of them (too crispy or with too much noise) were also reworked.

Pushed in commit c2ddc202ad6b.

Note: The spat code of SDL_mixer uses stereo samples internally, so the
standardization of all sounds is ok.