Sound effects sample formats ?

[OzzyOuzo]

Using u235 player what is the prefered source wave file format ?

 

i'm trying 8Khz unsigned 8bit PCM as a source for the assets but output is really dirty. (see attached file)

sry not able to try on real hw yet, only on emulators..

 

here is what an entry looks like :

 

sample124:    dc.l    _SFXfinalBonus; start of sample
dc.l    _SFXfinalBonus_end; end of sample
dc.l    0; repeat offset
dc.l    0; repeat length
dc.w    0; <NULL>
dc.b    0; fine tune
s124_vol : dc.b    63; volume
dc.l    8000; default play freq

 

as a side note, example module is playing fine, only sfx are dirty.

 

 

[OzzyOuzo]

here is the result with vjaguar :

 

2024-11-17 20-35-28.mkv

[OzzyOuzo]

result with bigPemu:

 

 

2024-11-17 20-38-37.mkv

[42bs]

I use signed PCM for HivelyPlayer and the I2S is also signed. So give signed a try.

[Zerosquare]

Yup. Instruments in MOD files use signed 8-bit PCM, so u235 probably uses the same format for sound effects.

[OzzyOuzo]

assets.txt files from samples projects are claiming :  - For audio files you can use "sfx_rawXXXXX" to convert any audio file (for example .wav, .mp3, .ogg, etc) into raw format.

but it doesn't seem to work like that anymore ? or i have missed something ? ^^

 

it seems that you must provide the 'source' samples that already match 'dest / internal' format which is fine but there is some kind of misleading informations at some point ^^

 

so far using Zerosquare player i was able to use unsigned 8bit pcm using 'Zero_Audio_8bit_Unsigned' parameter while playing sample.

Using u-235 player it works when exported as 'raw (header less) signed 8bit PCM' with Audacity for instance.

 

 

 

Edited November 18 by OzzyOuzo