vgmrips

The forum about vgm files
It is currently 2019-01-23, 10:11:25

All times are UTC + 1 hour [ DST ]




Post new topic Reply to topic  [ 6 posts ] 
Author Message
PostPosted: 2018-11-27, 21:21:01 
Offline

Joined: 2014-11-29, 21:36:08
Posts: 42
i want to use compressed samples in my vgm hacking music, i'm searching for he jman DPCM compressor but all the links is unavailable.
i download the Sonic mega pcm driver, but in te code can find the line to replace samples or convert the raw pcm to dpcm.
and, what extention is the dpcm files?, its a spesific file or a bin file as sonic1?.

where can i find the compressor?.
any help?

_________________
My favorite sound chip?, YM-2413!


Top
 Profile  
 
 Post subject:
PostPosted: 2018-11-28, 0:26:42 

Staff Staff
Programmers Programmers
Musicians Musicians
Contributors Contributors
Reverse engineers Reverse engineers
Offline
User avatar

Joined: 2011-12-01, 20:20:07
Posts: 3038
Location: Germany
I personally don't see a reason for using compressed samples for homebrew stuff, as usual 8-bit PCM sounds better. And MegaPCM supports that as well.

In general you have to save your WAV files as RAW unsigned 8-bit (mono). At this point you should already use them with MegaPCM (which I think most people do these days?).
If you insist on using DPCM samples, you should probably download my SMPS research pack http://www.mediafire.com/file/w6w29o3ec ... Pack_v5.7z
It includes a tool called "pcm2dpcm", which does the same conversion that jman's DPCM compressor did in the early days. The file extension doesn't matter, it's all binary files.


Top
 Profile  
 
 Post subject:
PostPosted: 2018-11-28, 6:19:15 
Offline

Joined: 2014-11-29, 21:36:08
Posts: 42
the reason to use dpcm is for experimenting new Sonic posibilitys when i apply large pcm files, for example, a 1 minut audio file as a wave player.
allso s for add derty qality of the samples just the sega megadrive dac.

_________________
My favorite sound chip?, YM-2413!


Top
 Profile  
 
 Post subject:
PostPosted: 2019-01-09, 21:36:15 
Offline

Joined: 2016-08-03, 22:36:09
Posts: 23
Location: Italy
Does anybody believe YM2413/OPLL can do pcm as baa say? Sort of PCM mode of FM6 of YM2612/OPN2?
Botton of this Page: baa Japanese page


Top
 Profile  
 
 Post subject:
PostPosted: 2019-01-09, 22:48:26 

Staff Staff
Programmers Programmers
Musicians Musicians
Contributors Contributors
Reverse engineers Reverse engineers
Offline
User avatar

Joined: 2011-12-01, 20:20:07
Posts: 3038
Location: Germany
This is not the first time I've seen hints of a debug mode on the OPLL that makes it able to play PCM stuff.
Unfortunately documentation on the OPLL test register is next to non-existent and it isn't emulated by any emulator AFAIK.
This is actually the first time I've seen such concrete documentation on it!

EDIT: Searching a bit more, I also found some documentation about it in the MSX Resource Center forums. It seems to be the same info, just in English.


Top
 Profile  
 
 Post subject:
PostPosted: 2019-01-09, 23:54:46 
Offline

Joined: 2016-08-03, 22:36:09
Posts: 23
Location: Italy
Thank You very much VB!
I've just taken it from Your links!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC + 1 hour [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group
[ Time : 0.135s | 15 Queries | GZIP : On ]