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91

MilkyTracker Community / Re: Filter Algorithms

« on: September 24, 2008, 22:12:18 »

Bits of (c/c++) code can  be found all over the net... e.g.

http://www.dspguru.com/

I would suggest reading the basics of DSP first (e.g. in DSP guide) and then start with FIR filters. There is a chapter about constructing FIR high/lowpass filters. This is very interesting reading, especially when you have never constructed a filter kernel for a basic FIR filter before.

92

MilkyTracker Community / Re: Filter Algorithms

« on: September 22, 2008, 18:11:54 »

I recommend reading the first chapters of the DSP Guide: www.dspguide.com
No need to dig through the entire book, but it's worth reading the first few chapters.

93

MilkyTracker Feature Requests / Re: wave edito filter please

« on: September 21, 2008, 13:59:34 »

oh dear, and i had just gotten used to it xD

I meant the code design, it will keep the current look and functionality

94

MilkyTracker Feature Requests / Re: wave edito filter please

« on: September 21, 2008, 11:16:48 »

I have to rewrite the sample editor first. I don't like the current "design".

95

MilkyTracker Feature Requests / Re: PSP Port (now that it's open source)

« on: September 19, 2008, 23:49:15 »

By the way, you can now get really small notebooks ("NetBooks") which are fully fledged computers and they're rather cheap

96

MilkyTracker Feature Requests / Re: wave edito filter please

« on: September 19, 2008, 23:47:39 »

Just to make this clear. Realtime filters are out of MilkyTracker's scope. I can probably implement some filters into the sample editor, but that's all I can offer.

97

MilkyTracker Support / Re: fadeout and keyoff

« on: September 18, 2008, 20:12:33 »

They only work with a volume envelope enabled.

98

MilkyTracker Feature Requests / Re: wave edito filter please

« on: September 18, 2008, 20:11:50 »

What's a filter btw? I think if you say "filter" you have to specify at least the type of filter you're referring to (i.e. low-pass, high-pass, band-pass etc.)

99

Bug Report Archive / Re: Export bug?

« on: September 17, 2008, 18:02:50 »

That's actually not a bug. The song starts playing after the first invisible row has been completed. Which means the tick counter starts at zero and when it reaches the initial speed setting the song will start playing.

100

Tracking / Re: Fadeout

« on: September 09, 2008, 11:37:19 »

First check that Milkytracker's not wrong - try your test under XMPlay and, if you can, FastTracker itself.

MilkyTracker is not wrong

So that's why it sounds like the volume fades in half the time...

The value in the official XM format spec (see below) is simply wrong. The only logical conclusion is 32768 instead of 65536.

Anyway I guess the envelope volume is 0-65536 (as it's written in XM format docs) but -don't know why- the values you set in the instrument will be doubled before being used, which has the same effect.

Code: [Select]

FinalVol=(FadeOutVol/65536)*(EnvelopeVol/64)*(GlobalVol/64)*(Vol/64)*Scale;

The envelope points range from 0 to 64. Just as the volume for samples and in the pattern itself.