Hi,

i have 2 issues with the mp3 opcodes:
First:
a1,a2, k2 mp3scal SFile,p5,1,1

is what i read in the manual example for mp3scal. And the example works.

In the syntax i read: asig, asig2 mp3scal Sfile,ktimescal,kpitch, kamp
[,iskip,ifftsize, idecim, ilock]

the "k2" from the example cannot be found in the syntax. What does it stand
for? The example does not work when i throw away the "k2".

And the second issue is:
in the Csound version i built on  May 15, i see a bunch of mp3 opcodes...
mp3bitrate          mp3in               mp3len
mp3nchnls           mp3scal             mp3scal_check       mp3scal_load
mp3scal_load2       mp3scal_play        mp3scal_play2       mp3sr

3 of them are documented -will the others be opcodes be documented soon?








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i see, thanks. Good to know where the time pointer is inside the mp3 sample.

i have another question:

kpitch -- grain pitch scaling (1=normal pitch, < 1 lower, > 1 higher;
negative, backwards)

The last part: "negative, backwards" 
I hear something is playing backwards, but it is not the total mp3 itself.
But what is? Is it the reading of the window while the time pointer
progresses forward?




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That is wrong. It's not grain pitch scaling, it's just pitch scaling and it can't play backwards (negative values won't work, I think it is limited to 0). Sorry, it was probably a mistake when editing the page. I will correct it.

Victor Lazzarini
Dean of Arts, Celtic Studies, and Philosophy
Maynooth University
Ireland

> On 19 Jun 2016, at 19:12, Menno Knevel  wrote:
> 
> i see, thanks. Good to know where the time pointer is inside the mp3 sample.
> 
> i have another question:
> 
> kpitch -- grain pitch scaling (1=normal pitch, < 1 lower, > 1 higher;
> negative, backwards)
> 
> The last part: "negative, backwards" 
> I hear something is playing backwards, but it is not the total mp3 itself.
> But what is? Is it the reading of the window while the time pointer
> progresses forward?
> 
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/mp3-issue-tp5750205p5750232.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> Csound mailing list
> Csound@listserv.heanet.ie
> https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND
> Send bugs reports to
>        https://github.com/csound/csound/issues
> Discussions of bugs and features can be posted here

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