[music-dsp] Impulse response normalization

2013-11-04 Thread Alessandro Saccoia
Hi all, I can't find any material about impulse reponse normalization for a convolution reverb. Using Logic's space designer I notice that there's definitely a preprocessing of the impulse reponse that one loads: given the same input and impulse without preprocessing, the convolution would yield

Re: [music-dsp] Precision issues when mixing a large number ofsignals

2012-12-11 Thread Alessandro Saccoia
ediate result (sum in this case) is given the same > number of bits. > > xue > > -Original Message- From: Alessandro Saccoia > Sent: Monday, December 10, 2012 9:41 AM > To: A discussion list for music-related DSP > Subject: Re: [music-dsp] Precision issues when mi

Re: [music-dsp] Precision issues when mixing a large number of signals

2012-12-10 Thread Alessandro Saccoia
> > I don't think you have been clear about what you are trying to achieve. > > Are you trying to compute the sum of many signals for each time point? Or are > you trying to compute the running sum of a single signal over many time > points? Hello, thanks for helping. I want to sum prerecorded

Re: [music-dsp] Precision issues when mixing a large number of signals

2012-12-09 Thread Alessandro Saccoia
imple technique of recursively dividing the sums > into pairs, which will prevent later results from having greater error > than earlier ones, though you'd probably need to know N in advance for > this to be practical: http://en.wikipedia.org/wiki/Pairwise_summation > > -- Brad Sm

Re: [music-dsp] Precision issues when mixing a large number of signals

2012-12-09 Thread Alessandro Saccoia
Thanks Bjorn, > > On Dec 9, 2012, at 2:33 PM, Alessandro Saccoia wrote: > >> Hi list, >> given a large number of signals (N > 1000), I wonder what happens when >> adding them with a running sum Y. >> >>1N - 1 >

[music-dsp] Precision issues when mixing a large number of signals

2012-12-09 Thread Alessandro Saccoia
Hi list, given a large number of signals (N > 1000), I wonder what happens when adding them with a running sum Y. 1N - 1 Y = - * X + ( ---) * Y N N Given the limited precision, intuitively something bad will happen for a large N. Is th

Re: [music-dsp] recommendation for VST host for dev. modifications

2012-06-27 Thread Alessandro Saccoia
gins wrote: > MrsWatson appears to presuppose the use of the Steinberg VST SDK, > which is precisely what I am proposing to avoid. > > Regards, > Mike > > On Tue, Jun 26, 2012 at 6:31 PM, Alessandro Saccoia > wrote: >> You could take a look at Mrs Watson from

Re: [music-dsp] recommendation for VST host for dev. modifications

2012-06-26 Thread Alessandro Saccoia
You could take a look at Mrs Watson from Teragon Audio http://teragonaudio.com/MrsWatson.html best Alessandro On Jun 26, 2012, at 11:10 PM, Michael Gogins wrote: > The JUCE license (GPL) is not compatible with the Csound license (LGPL). > > Regards, > Mike > > On Tue, Jun 26, 2012 at 4:56 PM, R

Re: [music-dsp] Seminar: Listening and Learning Systems for Composition and Live Performance (by Nick Collins)

2012-05-31 Thread Alessandro Saccoia
Good morning Sam, I am really interested in signing up and participating to the seminar if you could setup a webcam, as I cannot come to Barcelona in those days. Could you offer this option? Thank you alessandro On May 31, 2012, at 3:39 AM, Sam Roig wrote: > 8/9/10.06.2012 > > LISTENING AND LE

Re: [music-dsp] Window presum synthesis

2012-04-20 Thread Alessandro Saccoia
Hello, I haven't read your post in detail but > ps. I've seen this article > http://archive.chipcenter.com/dsp/DSP000315F1.html often being > mentioned as "explaining it all" but unfortunately the site no longer > exists… always check archive.org for pages that are gone... http://web.archive.org

Re: [music-dsp] best board/set to do music on with minimal upstart?

2012-04-13 Thread Alessandro Saccoia
Arduino paired with a decent ADC/DAC would be good just for lightweight DSP. It could be used to control a workhorse DSP through I2C communication, but I don't think there is any ready to go development board out there… you should wire it yourself, and program both the processors. alessandro On

Re: [music-dsp] Introducing myself

2012-02-22 Thread Alessandro Saccoia
Hello Bill, I take your question as a chance to introduce myself. When you sweep the input parameter you are introducing discontinuities in the output signal, and that sounds awful. The simplest case to figure that out in your code is imagining that you have the input variable set at 0 (pan = 0),