Avols » Uncategorized

streamViewer

Arve Voldsund — Wed, 17 Nov 2010 15:07:30 +0000

In the fourMs-lab at the UiO we have various sensor devices and MoCap-systems that puts out a lot of data. In order to have a straightforward method of evaluating these data, I made the streamViewer (mxj-external), which takes an OSC-stream and displays numerical values in a graph and the OSC-message as a string. StreamViewer can also do analysis on the data, and I am going to implement more features for analysis of data during the next few days. In the image below, only QoM (quantity of motion) is displayed.

streamViewer displaying data sent via UDP from Qualisys QTM.

Image of a maxpat with both lister and streamViewer in it.

In addition to streamViewer I made the lister (mxj-external) which formats message content for the streamViewer (or whatever you might want to format anything for). Lister takes any list of numbers and semantics and scales the numericals in the entire list according to your preferences. If you put in e.g. an OSC-message with an adress and a lot of integers and floats the message comes out of lister exactly as it went in: the semantics are left untouched and the numbers are scaled to the range you have specified in lister’s arguments. So if you say that any values between 0 and 1000 shall come out as values between 0. and 1. in a strict manner, lister will clip its input range to at 0 and 1000, and values outside this range will be ignored. If you set it to be boundless it will continue scaling values outside the input range as if the input range did not exist. I.e. in boundless mode lister uses the input range to calculate the scaling factor, and ignores the input range.

Cheers
Arve.

Just for fun

Arve Voldsund — Wed, 20 Jan 2010 08:36:29 +0000

I do repost because:

Arve Voldsund — Tue, 25 Nov 2008 00:07:58 +0000

I want to keep things in order, and my web host had an unfortunate server collapse and my backup was to old and some posts went astray. Google had them tucked away: So here they are. Reposted and shiny.

Sorry for the inconvenience.

Kind regards
Arve

Mitch Mitchell

Arve Voldsund — Tue, 25 Nov 2008 00:04:40 +0000

Mitch Mitchell is dead. It makes me sad. The world has lost another giant. Here is a link I found in a Mitch Mitchell group on facebook: http://www.youtube.com/watch?v=jE80W5xYbTI&feature=related

Tear out the old stuff, build something new. That fits.

Arve Voldsund — Tue, 25 Nov 2008 00:03:55 +0000

I am a fan of car audio. When at home with family or other people you can’t go AC/DC on, the car stereo is a saver: You just have to wait until the next drive.

I don’t have a car at the moment, but I went to see some other cars with stereos in them at the Emma (European Mobile Media Association) exhibition in Tønsberg last Saturday. A friend of mine, Frode, was one of the exhibitors (Bassbrothers), and he was kind enough to give me a tour. Check out Bassbrothers’ website for more info about car audio.

I learned a couple of things:
1: These guys are not afraid of building, tearing apart, make a new interior that is supreme compared to what came as default.
2: Building things in plastic is not a problem, it is a necessity.
3: Definition (frequency and space (ie panning)) in good car audio is superior to a lot of high end studio monitors I have put my ears in front of.
4: A dashboard, or any other part not suitable for a stereo, goes out. A new one is built, and take my word for it: A Toyota doesn’t have to be.. toyota.

What impresses me the most, is the new parts that these guys put togheter. It is amazing. Rapid prototyping seems to be a time waster. They just make stuff, and do so without fancy tooling.

I am going to learn from the car audio people.

cheers
Arve

This is the way to hire!

Arve Voldsund — Mon, 24 Nov 2008 23:59:48 +0000

http://www.randsinrepose.com/archives/2008/11/04/build_anything.html

Changed theme…

Arve Voldsund — Thu, 09 Oct 2008 11:45:10 +0000

Had to change because the fjords was constantly loaded as a mess in Firefox 3. I like Firefox, so therefore, until I get another blogsystem up, this will be it. Please send me an email if you encounter problems around this site. I want you to have a smooth visit, and a nice ride home.

cheers
Arve

Presentations

Arve Voldsund — Wed, 01 Oct 2008 11:28:51 +0000

When developing new products an inevitable part of the process is the presentation of things. Therefore I have been reading, looking and thinking about presentation techniques today, and one of the presenters I watched doing his magic is Keith Barry. I am puzzled, amazed and inspired by this video over at ted.org.

Have a look around at ted.org as this site contains a myriad of interesting stuff in a many categories.

Seth Godin’s blog is also a very valuable resource.

cheers
arve