This is great. Thanx so much for the code.
-- Rich
----- Original Message -----
From: "Atte André Jensen"
Rich Caloggero wrote:
OK, I'm a total beginner at all this dsp stuff, so forgive ...
One way of subjectively "widening" a stereo image is to do the following: feed the left channel back to the right with a short delay, inverted; feed the right channel back to the left with a short delay, inverted;
By inverted, I mean change the sign of each sample (assuming we have floating point samples).
So now the newbie question: how do you invert the signal? I have the rest of the algorithm here:
// note: sndbuf only seems to read in one channel of the source, so use one file for each channel of stereo source
Use "1 => r.channel" to read the second channel of a stereofile...
Here's a modified example that inverts the phase of one channel. I threw away the SndBuf (sine is good for testing) and delay to be able to hear what's going on more clearly. So the trick is (thanks Kassen for enlighting me last week) is the blackhole sample sucker + the last() for reading and next for writing sample values. I think you should fairly easily be able to use my inverter() function in your code...
Hope that helps. ------------------------------ SinOsc l => dac.left; SinOsc r => blackhole; Step inverted => dac.right; l => dac.left; r => blackhole;
spork ~ inverter(r,inverted);
while(true) { 1::second => now; }
fun void inverter(UGen in, Step out){ while(true){ - in.last() => out.next; 1::samp => now; } } ----------------------------------
-- peace, love & harmony Atte
http://atte.dk | http://myspace.com/attejensen http://anagrammer.dk | http://modlys.dk _______________________________________________ chuck-users mailing list chuck-users@lists.cs.princeton.edu https://lists.cs.princeton.edu/mailman/listinfo/chuck-users