who can add Percival-Tzanetakis Tempo Estimator into our O2014 toolkit ?

Hi,

For our rhythm research we need a decent tempo estimator as a fundamental tool.

Adrian sent this:

Streamlined Tempo Estimation Based on Autocorrelation and Cross-correlation With Pulses
Graham Percival, George Tzanetakis (Trans. Audio, Speech, and Language Processing, 22.12, Dec. 2014)

It’s implemented in Marsyas (C++), Python and Matlab.

Is this available as an efficient Max/MSP external so we can incorporate it into our apparatus?

If not, who can do this, this Fall,  for Synthesis' RHYTHM research stream?

Synthesis lighting research cluster / responsive environments

Dear Chris, Omar,

In the responsive environments research area:

Let’s start gathering our notes into a Posthaven — for now use 

Kristi can help summarize once a fortnight  or so...








__________________________________________________________________________________
Professor and Director • School of Arts, Media and Engineering • Herberger Institute for Design and the Arts • Synthesis • ASU • +1-480-727-2146
Founding Director, Topological Media Lab / topologicalmedialab.net/  /  skype: shaxinwei / +1-650-815-9962
__________________________________________________________________________________

[Synthesis] Portals needed

Hi!

We need portals supporting concurrent conversation via common spaces like tabletops + audio… (no video!)
not talking-heads.     It may be useful to have audio muffle as a feature — continuous stream audio, but default is to  “content-filter” the speech.   (Research in 1970’s … showed which spectral filters to apply to speech to remove “semantics” but keep enough affect…)

Maybe we can invite Omar to work with Garrett or Byron or Ozzie to install Evan’s version in the Brickyard and Stauffer and iStage as a side effect of the Animated spaces: Amorphous lighting network workshop with Chris Ziegler and Synthesis researchers.

BUT we should have portals running now ideally on my desk and on a Brickyard surface.  
And that workshop remains to be planned (October ??)
And possibly running also on the two panel displays re-purposed from Il Y A — now moved to Stauffer...

Xin Wei


__________________________________________________________________________________
Professor and Director • School of Arts, Media and Engineering • Herberger Institute for Design and the Arts • Synthesis • ASU • +1-480-727-2146
Founding Director, Topological Media Lab / topologicalmedialab.net/  /  skype: shaxinwei / +1-650-815-9962
__________________________________________________________________________________

Bill Forsythe: Nowhere and Everywhere at the same time No. 2 (pendulums)

Two works by two choreographers Dimitris Papaioanno, and Bill Forsythe,
with very different and interesting approaches to causality and temporal texture…

- Xin Wei

On Jul 20, 2014, at 12:55 AM, Michael Montanaro <michael.montanaro@concordia.ca> wrote:

A beautiful choreographed work: NOWHERE (2009) / central scene / for Pina
from Dimitris Papaioanno



Begin forwarded message:

From: "Vangelis Lympouridis" <vl_artcode@yahoo.com>
\Date: July 22, 2014 at 8:39:27 AM GMT+2
To: "Adrian Freed" <Adrian.Freed@asu.edu>, "'Sha Xin Wei'" <shaxinwei@gmail.com>, "'John MacCallum'" <john@cnmat.berkeley.edu>

When you have a second please watch this 2 min video with Forsythe’s piece Nowhere and Everywhere at the same time No2.

I think it is SO to the core of what we reasoning about… J

                                                                                                                                                                                                                                                        

 
 
Vangelis Lympouridis, PhD

Visiting Scholar,

School of Cinematic Arts

University of Southern California

 
Senior Research Consultant,
Creative Media & Behavioral Health Center

University of Southern California

 
Whole Body Interaction Designer

Tel: +1 (415) 706-2638 

PDF of: calibration etc.; rhythm; Synthesis CFP

Hi, Since the mail server mangled my diagrams' positions, let me re-send the email trail as PDF, and to our research notebook:   http://textures.posthaven.com - Xin Wei

__________________________________________________________________________________
http://improvisationalenvironments.weebly.com  Feb 15 - March 7, 2014, Matthews iStage
__________________________________________________________________________________
Professor and Director • School of Arts, Media and Engineering • Herberger Institute for Design and the Arts / Director • Synthesis Center / ASU
Founding Director, Topological Media Lab / topologicalmedialab.net/  /  skype: shaxinwei / +1-650-815-9962
__________________________________________________________________________________

Navid Navab: Re: correlation is a vast and nebulous space


I agree with Doug’s caution about the problem with ignoring away the “dependent” variables — values f[t] — and paying attention only to “zero”-crossings.   As Adrian would point out as well, this already encodes many assumptions on what is a significant event.   For example, that’s the basic problem with the “pluck” detector that Navid has coded and used

This is a big reduction about how I use plucks and triggers to ornament continueus events. In my first rough draft of GestureBending Principles (found here: http://gesturebending.weebly.com/principles-of-gesture-bending.html) I have clearly stated that triggers and and other event and onset detectors are solely used to modulate continues data with the goal of ornamenting their perceived formal structures that are driven continuously and often by the the trigger's dependant variable.

Maybe what is being referred to here as "pluck" i believe is our trigger detectors with hysteresis and debounce... Out of context this is just a very very simple element that people in our lab and elsewhere have put to different uses. Miller's bonk~ (onset detector) partially uses this and so does Vangelis's triggers and etc. We have in the recent past used this data to detect onsets and feed the onset times into our rhythm kit. Contextually meaningful modal bracketing starts from thoughtful feature extraction and the complementary rhythm kit provides a method for viewing, analyzing and manipulating the detected event onsets.

Quantum Experiment Shows How Time ‘Emerges’ from Entanglement

As I’ve been saying.  This is more rhetorical fuel for why I want the Einsteins Dream as well as the Improvisational Environments workshop to host apparatus that tries to avoid  “absolute” time-indexes 

Quantum Experiment Shows How Time ‘Emerges’ from Entanglement

Time is an emergent phenomenon that is a side effect of quantum entanglement, say physicists. And they have the first experimental results to prove it



https://medium.com/the-physics-arxiv-blog/d5d3dc850933

Re: correlation is a vast and nebulous space || was Re: Intel Announces Edison and a Wearables Contest

I agree with Doug’s caution about the problem with ignoring away the “dependent” variables — values f[t] — and paying attention only to “zero”-crossings. As Adrian would point out as well, this already encodes many assumptions on what is a significant event. For example, that’s the basic problem with the “pluck” detector that Navid has coded and used

(More precisely, for a fixed y, the intervals in the inverse image of y under f: { f^(-1)[y] }, assuming f is C0).)

But I have a fundamental reason which is to deliberately lever us away from mono-sense-modality-ness. It’s a very crude but hopefully effective method to get us to pay attention to the phenomenology of temporality.

Keeping in mind the modal bracketing that’s being performed by looking at intervals as Julian’s kit provides.

There are more sophisticated approaches — as Pavan pointed out in an AME seminar last month: well known in signal processing 101 as passing to frequency (time) domain. That raises other fundamental issues when the signal cannot be assumed to have a significant periodic component.

And so it goes. Meanwhile I say, let’s get crude and palpably relevant experiments working first, palaver later! Xin Wei

Doug van Nort: correlation is a vast and nebulous space

I am interested in how this study progresses, and must admit I'm more into gestural/temporal analysis than the hardware side of things (though it is nice to keep abreast of the latest developments…).  Especially ideas that could also be applied to music/movement coordinations.

Definitely agreed that the simple approach of onset/intervals is the way to go with this one.  I just wanted to note that, in such unconstrained movement situations, the continuous signal is still an important friend when one
cares about defining segments or onsets.  In Max/MSP parlance, bonk~ is right for some situations and not for others.  Conversely, continuous cross-correlation can be an excellent tool for finding onsets and the lag between co-ordinated onset actions, or a misleading one depending on the ensemble of signals. Really it should be tried, though along with the inverse, discrete correlation of pre-extracted onset data.  Weighting, warping and normalization of the corr. function can be applied as the situation receives more constrains due to the movement context. (e.g. compare Yin algorithm to standard autocorr. in the case of pitch detection).

All this to say, allowing a pre-defined package to uncritically handle the layer between continuous input and output onset data could be another type of over-determination of the problem : )

best,

Doug

(1) rhythm correlation and (2) state transition experiments for TML-Synthesis improvisatory environments residency Feb 15 - March 8 @ ASU

Hi Julian, Katie, (and Nina):

Yes, I need to define the experiments in consultation with the experienced folks.  See http://improvisationalenvironments.weebly.com 

Assuming that we can clear her paperwork with ASU, Katie will do logistics, scheduling.

My colleague Prof. Chris Ziegler, an expert in the domain of movement and technology from ZKM,
graciously agreed to be the Faculty point person for this workshop on the AME side.
So, soon I would like to hand this sort of communication over to Chris.

Then I would like to step back and focus on the design and execution of
phenomenological and scientific experiments on 
(1) rhythm / temporal textures
and 
(2) state transitions
which are my main foci during this workshop. 
(1) rhythm / temporal textures involves working with Julian, Nikos, Ozzie, talking with Adrian and Doug.  Re-read http://textures.posthaven.comespecially.
(2) state transitions involves working with Navid, Julian, Evan, talking with Garth.  Re-read the Ozone paper (ACM Multimedia 2010)

Julian, Katie, (and Navid, Chris and Nina), I’ve inviting you as Admins to weebly.com so you can edit

I have transferred info from the following text into the website

Cheers,
Xin Wei
__________________________________________________________________________________
Professor and Director • School of Arts, Media and Engineering • Herberger Institute for Design and the Arts / Director • Synthesis Center / ASU
Founding Director, Topological Media Lab / topologicalmedialab.net/  /  skype: shaxinwei / +1-650-815-9962
__________________________________________________________________________________