Wow, I just want to say while I appreciate the link to
B16.long-varispeed.pd, that's some gnarly code :)
I sort-of get the principle,
but no idea how this works.
This will keep me busy. I image I will have to study the
source code to understand the 4-point interpolation of tabread4~.
I am looking forward to this study!
When I understand this long-table patch,
the Phase Vocoder, and Martin Brinkmann's Chaosmonster,
then I feel I will move into advanced PD status :)
PS: I am very grateful to Miller for PD,
and to all of the helpful people in this amazing community!
This is most fun with computers I've had in many years!
(and I'm an old-timer).
BH in Binghamton NY, USA
PS/OT:
I have been always hacking with audio. Stated doing
sound-on-sound reverb and tape loops with by brother's
Marantz reel-to-reel deck when I was about 12 y/o.
(He would have killed me had he known!)
To give you an idea, this was my first computer:
*http://tinyurl.com/8mq9nyw http://tinyurl.com/8mq9nyw*
4k of RAM, monochrome, no disk drive, and *no lower case*.
I wrote a hack in BASIC to read/write the cassette port and
do PWM to sample and playback human speech and make tones.
We didn't have 24-bit audio, not 16-bit, or even 8 bit audio.
*We had glorious 1-bit audio! On/off.*
*This is what I've been through. *
*Still we were able to make amazing sounds with it!*
*To have PD now is fulfilling a dream I've been having for 35 years! *
On Tue, Mar 31, 2015 at 11:17 AM, Miller Puckette m...@ucsd.edu wrote:
Hi all -
There's an example in B16.long-varispeed.pd that shows how you can use
offsets
into long arrays - this allows you to use the signal input within a smaller
range (ideally 1 second) to get accurate addressing.
cheers
Miller
On Tue, Mar 31, 2015 at 11:07:52AM -0400, William Huston wrote:
I have a related question.
I am intermediate PD programmer, about 9 months into patching.
I really love PD, despite some quirks.
The single most annoying issue I have found so far is the inability for
PD
to accurately index into large arrays.
The way this manifests is very curious! I first noticed high frequency
noise at maybe 6 min. into an array, which gets worse as you move into
the
file. At 20 min, it's really horrible.
I would say the root cause is
a) lack of a long integer datatype. Friends, sometimes you really want
ints, like accurately indexing into an array, and
b) lack of precision in (short) floats.
People on the FB group promptly told me this is a well-known issue, and
directed me to PD-double. This sounds like a wonderful project, however
it
seems it is only beta, and breaks several of the modules in extended.
So I am wondering 2 things:
1) What solutions have people come up with for accurately reading big
arrays at audio rate, using either pd-extended or vanilla?
(I have considered breaking the big file up into smaller arrays, but this
is cumbersome).
2) What is the long-term goal at solving this problem?
Thanks :)
On Tue, Mar 31, 2015 at 5:51 AM, peiman khosravi
peimankhosr...@gmail.com
wrote:
Sorry, forgot to reply to all.
Hello,
I had this problem in maxMSP recently and found a working solution.
Note
that I was only on a laptop so I don't know how relevant this is to
your
question. Below is the solution I found on the Max forum (I don't have
the
link right now but it should come up on google).
1- Read the file [silently] from disk (using sfplay~ or equivalent),
at 50
times the original speed and record the output into a buffer that is 50
times smaller than the original file.
2- You can navigate through this smaller buffer and multiply the
output by
50 to get the correct time pointer into the original file. I then read
the
original file from the disk, instead of loading it into a buffer.
3- Since I'm making my patch for concert playback, I have put in place
a
checking mechanism that looks for an existing 'waveform' file. (The
patch
automatically names these originalFileName.wave.aif.) If it exists, the
waveform file is read into the buffer, otherwise, the loaded soundfile
is
'analysed'.
I can send you my patch if you are interested. I don't see any reason
why
this can't be implemented in PD. Although the graphical scrolling
might be
slower in PD. I'd be interested to know if this works in PD.
Best,
Peiman
*www.peimankhosravi.co.uk http://www.peimankhosravi.co.uk || RSS
Feed
http://peimankhosravi.co.uk/miscposts.rss || Concert News
http://spectralkimia.wordpress.com/*
On 31 March 2015 at 10:18, Stefan Tiedje stefantie...@googlemail.com
wrote:
Hello list,
might well be the first post here, though I am well experienced in
Max/MSP...
As there is no way to get Max patches run on mobile devices, I want
to do
it in PD using the MobMuPlat apps for Android/iOS.
The task
