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NEC PC-FX => PC-FX Discussion => Topic started by: Mednafen on March 13, 2010, 11:25:54 AM

Title: Note about the PC-FX music rippers I created...
Post by: Mednafen on March 13, 2010, 11:25:54 AM

...it turns out the ADPCM decoding algorithm(OKI/Dialogic) I was using was slightly wrong(which caused a bit of extra noise and distortion in the decoded music than what should have been there).

NEC seems to have modified the delta step calculation algorithm in a subtle manner compared to the stock OKI algorithm(whether intentionally or if it was an accident, I don't know) for the PC-FX.  If anyone's interested, I can release fixed copies of the music rippers.

Title: Re: Note about the PC-FX music rippers I created...
Post by: exodus on March 28, 2010, 07:12:20 AM

I sure don't see a reason why you shouldn't! The more tools out there the better!

Title: Re: Note about the PC-FX music rippers I created...
Post by: Pcenginefx on April 06, 2010, 07:55:18 PM

I second exodus - please release the fixed version of your ripper!

Title: Re: Note about the PC-FX music rippers I created...
Post by: Mednafen on July 22, 2011, 11:33:28 AM

Der Langrisser FX music dumper updated(see the README file in the ZIP):

http://nekozomb.fobby.net/music/der-langrisser-fx/