Hi,
Please forgive me if this is a commonly answered question, but I'm new and finding my feet :-)
If I create a patch with:
osc~ 440 ----> *~ 0.05 ----> dac~
just the same as 01.PART1.sinewave.pd in the documentation, I get a very distorted output (as I do when I open 01.PART1.sinewave.pd.)
If I reduce the *~ figure to anywhere below 0.001, I seem to get an almost artifact-free signal. However, anything above that results in a highly distorted signal.
testtone.pd is painful to the ear :-) Just too much volume, somewhere along the line.
Is there an overall volume control somewhere that I haven't tweaked or found yet?
I'm running pd on FreeBSD 4.8, and it came out of the ports. It's version 0.35.23. I'm running it on a tiny Sony Vaio laptop, which is said to have a Yamaha DS-1E (YMF754) -based sound device.
Has anyone else had (or solved!) this particular issue?
Nick
On Mon, Apr 28, 2003 at 11:15:18PM +0930, Nick Morrison said:
I'm running pd on FreeBSD 4.8, and it came out of the ports. It's version 0.35.23. I'm running it on a tiny Sony Vaio laptop, which is said to have a Yamaha DS-1E (YMF754) -based sound device.
Has anyone else had (or solved!) this particular issue?
PS - I tried lowering the master and pcm volumes using the system (not pd) mixer tool, and the distortion was apparent for the whole range. In other words, I'm *fairly* sure the distortion is coming from pd.
It should be noted that other sound applications (xmms, spiralsynth, etc) do not exhibit the same behaviour.
Cheers,
Nick!
Nick,
i've seen this problem when an incorrect audiobuf or blocksize is used as a starting argument. it sounds like clipping distortion, but it isn't. for example, i have my PD startup arguments optimized for using an external soundcard [far beyond the capabilities of my built-in i8X0] and with the Jack server. so, if i try to run it with the same settings on the built-in soundcard and no Jack, my testtone sounds like a strangled scream. try different audiobuf settings, blocksizes and maybe tweak a few other things [match sampling rate of PD to sampling rate of soundcard, etc etc.]. typing pd --help will give you the list of all startup arguments. when you get ones that work for you, make a .pdrc file of them and put it in your home directory. mine looks like this:
-blocksize 512 -channels 8 -path /usr/lib/pd/iemabs -lib Gem -lib zexy -lib iemlib1 -lib iemlib2 -lib iem_mp3 -lib iem_t3_lib -lib OSC
but you will want bigger blocksize and fewer channels, plus links to whatever externals you have. best, Derek
Nick Morrison wrote:
On Mon, Apr 28, 2003 at 11:15:18PM +0930, Nick Morrison said:
I'm running pd on FreeBSD 4.8, and it came out of the ports. It's version 0.35.23. I'm running it on a tiny Sony Vaio laptop, which is said to have a Yamaha DS-1E (YMF754) -based sound device.
Has anyone else had (or solved!) this particular issue?
PS - I tried lowering the master and pcm volumes using the system (not pd) mixer tool, and the distortion was apparent for the whole range. In other words, I'm *fairly* sure the distortion is coming from pd.
It should be noted that other sound applications (xmms, spiralsynth, etc) do not exhibit the same behaviour.
Cheers,
Nick!
hi, did you also check your monitoring/line in... could also be a feedback-loop in your system. marius.
PS - I tried lowering the master and pcm volumes using the system (not pd) mixer tool, and the distortion was apparent for the whole range. In other words, I'm *fairly* sure the distortion is coming from pd. Nick!
-
derek holzer -
marius schebella -
Nick Morrison