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Forums > C64 Composing > *.wav to 4-bit-digi converter?
2005-08-20 17:17
Bamu®
Account closed

Registered: May 2005
Posts: 1332
*.wav to 4-bit-digi converter?

I'm looking for a Sample-Converter which works under Win2000
 
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2005-08-23 12:34
Scout

Registered: Dec 2002
Posts: 1570
Quote: Bah, my samples (drum-loops etc.) are really noisy ?!? What's wrong?
Is there a trick to eleminate this?
I testet it with filters etc., but there isn't much improvement


You have to use unsigned samples.
Every selfrespecting waveeditor (wavelab, soundforge...) on PC/Mac could be used for that.

R.
---
-= Silicon Ltd. =-
http://forum.siliconlimited.com
2005-08-23 12:36
Bamu®
Account closed

Registered: May 2005
Posts: 1332
Quote: You have to use unsigned samples.
Every selfrespecting waveeditor (wavelab, soundforge...) on PC/Mac could be used for that.

R.
---
-= Silicon Ltd. =-
http://forum.siliconlimited.com


Hmm, I used Ner Wave Editor.
2005-08-23 12:55
Scout

Registered: Dec 2002
Posts: 1570
Quote: Hmm, I used Ner Wave Editor.

Nero Wave Editor is for editing wav's meant for burning as audiotracks on cd's.
These wav's are always signed.

I don't know any free waveeditors or converters to download but maybe the others can help you with that.

R.
---
-= Silicon Ltd. =-
http://forum.siliconlimited.com
2005-08-23 13:38
Linus

Registered: Jun 2004
Posts: 639
lo,

you gotta look for any editor that is able to save .raw files. the editor should ask you to specify a format; select "unsigned 8bit". the result can be transfered to a .d64 image and then be read by pollytracker.

i usually do like this: resample the .wav to 8khz with an anti-alias filter, convert it to 8bit and then save as raw unsigned 8bit. (i prefer using soundforge but there should be free editors that can do the trick too)

greetz,
linus
2005-08-23 16:29
Raf

Registered: Nov 2003
Posts: 343
I prepare samples to convert with CoolEdit pro v2.x,
it allows to lower aplitude ,make signed or unsigned files , also you can resample samples with many interpolation options. BTW yesterday I found my [unfinished] improvement of reiter's converter so I can send you it if you wish, it allows to convert both signed and unsigned 8bit pcm wav samples to 4bit raw format suitable for c64.
2005-08-24 16:48
Bamu®
Account closed

Registered: May 2005
Posts: 1332
Quote: I prepare samples to convert with CoolEdit pro v2.x,
it allows to lower aplitude ,make signed or unsigned files , also you can resample samples with many interpolation options. BTW yesterday I found my [unfinished] improvement of reiter's converter so I can send you it if you wish, it allows to convert both signed and unsigned 8bit pcm wav samples to 4bit raw format suitable for c64.


Yep, I whish! ;-O

Thank you Raf!
2005-08-25 13:30
Raf

Registered: Nov 2003
Posts: 343
@Nata: did you receive the file?
2005-08-25 13:40
Bamu®
Account closed

Registered: May 2005
Posts: 1332
Quote: @Nata: did you receive the file?

I send you a mail some minutes ago... :)
2010-02-04 10:22
enthusi

Registered: May 2004
Posts: 677
#ifndef NIBBLES
for (i=0;i<stream;i++)
	{
	v1=fgetc(wav_file);
	v2=v1/16;
	fputc(v2,sample_file);
	}
#endif
#ifdef NIBBLES
for (i=0;i<stream;i+=2)
	{
	v1=fgetc(wav_file);
	v2=v1/16;
	v1=fgetc(wav_file);
	v3=v1/16;
	v4=v3+v2*16;
	fputc(v4,sample_file);
	}
printf("using nibbles\n");
#endif	
2010-02-04 10:38
SIDWAVE
Account closed

Registered: Apr 2002
Posts: 2238
command line exe plz :D
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