Author: catsynth

36

Today we explore some properties of the number 36. It is of course a perfect square, 6 x 6. But it is also a so-called “triangle number”, the sum of consecutive integers from 1 to 8. It is highly composite, having 9 factors, all 2s and 3s. Composites of 2 and 3 have a particular appeal for humans, and are very common in music (where most rhythms are subdivisions of 2 and 3), and in organization (e.g., dozens, etc.).

We will continue to post properties and facts throughout the day, but feel free to suggest your own in the comments.

Pi Day 3.14159…

[For Weekend Cat Blogging, please scroll down or click here.]

We at CatSynth once again, celebrate Pi Day on its three-digit approximation, March 14 (3-14).

We start with some interesting facts about the digits of pi. We presented statistics about the distribution in our 2007 Pi Day post. From super-computing.org, we present some interesting patterns:

01234567890 first occurs at the 53,217,681,704-th digit of pi.
09876543210 first occurs at the 42,321,758,803-th digit of pi.
777777777777 first occurs at the 368,299,898,266-th digit of pi.
666666666666 first occurs at the 1,221,587,715,177-th digit of pi.
271828182845 first occurs at the 1,016,065,419,627-th of digit pi. (that’s e for those who haven’t memorized it)
314159265358 first occurs at the 1,142,905,318,634-th digit of pi.

Last year, we showed the relationship to the Gamma function, and of course to Euler’s identity, which links pi surprisingly closely to the imaginary constant i and the number e. But it is also surprisingly easy to generate pi from simple sequences of integers. Consider the Madhava-Leibniz formula for pi:

Thus one can generate pi from odd integers and simple arithmetic. Another formula only involving perfect squares of integers comes from the Basel problem (named for the town of Basel in Switzerland):

In recognition of Pi Day, the U.S. House of Representatives passed a resolution this week:

And thus the sad history of pi in politics as exemplified by the Indiana Pi Bill of 1897 is put to rest. Now onto erasing the sad history of science and politics in general of the past eight years…

Weekend Cat Blogging: 月神

As part of my bid to learn at least a little bit of Chinese, I have given Luna an appropriate Chinese name: 月神, or “Queen of the Night”. The character 月 by itself refers to the moon.

And since my return our little Queen of the Night is enjoying, indeed demanding, much attention.

I did see more cats in China on this trip, this time mostly strays. This orange cat was in Fuxing Park in Shanghai.

Like most cities, there are lots of stray cats in Shanghai. I did hear from a friend who was showing me around that there is a new program to help feed and care for stray cats, but I have not been able to find any information online.

And now, for the first time in a while, we have an opportunity to relax, and to catch up on things at home:

Weekend Cat Blogging #197 is being hosted by LB and Breadchick at The Sour Dough. They have the winning combination of cats, music (audio gear) and red wine.

The auspicious Bad Kitty Cats Festival of Chaos #88 is being hosted by Miz Mog and the Kitties at Mind of Mog. (Yes, it’s another Chinese reference, go look it up).

The Carnival of the Cats #261 will be up this Sunday at Nikitas Place

And of course the Friday Ark is at the modulator.

Recap: Performance at The Shelter in Shanghai

A brief review in photos of my performance last Friday at The Shelter.

The Shelter is actually in a converted bomb shelter, and to get there one descends a long narrow staircase and enters this cave-like hallway:

Inside the main club space, it is mostly dark, save for a few small lights and these video screens broadcasting live from the DJ booth:

The above photo shows my setup via the video camera. We can take a closer look at on the DJ platform itself.

As described in the previous post, I combined traditional Chinese musical instruments with electronics, blending old and new. In the above image you can see (left to right) a prayer bowl, a small bell, a gong, and temple blocks (to the right of the laptop). Some of my Chinese friends and colleagues were blown away by the idea that one can combine the different elements to make a single type of music.

The performance itself went quite well, and just about everything worked as planned. If there was one thing that was unfortunate, it was that 10:30 is quite “early” in terms of Shanghai nightlife, so there were not that many people in attendance yet. But you always play for the people who are there, and it was a new experience for all of us.

The club did fill up later on during the DJ sets that followed, and I stuck around to hear most of them – it seems this is one of the main places in the city to hear more underground or unusual music, be it live electronics or DJs. That was an adventure in and of itself, but a story for another time.

I did also make an audio recording and a video of the performance, which I have not had a chance to review yet. Look for at least short excerpts of both in the future.

Blog about dinner

We begin the recap of my extended weekend in Shanghai with another “Blog about dinner.”

It seems the custom with most Chinese meals at restaurants here is to order ridiculous amounts of food. This is what almost all of my Chinese friends here do when we go out to eat. Below is just a sampling of dishes from last Friday’s dinner.

As discussed during the first trip, Shanghai, and the entire Yangtze River delta region are known for seafood. The fish is very fresh and flavorful, but you have to accept that there are going to be lots of bones. Variants of fish cooked in wine sauce, as pictured below, are a common item on local menus.

Non-fish seafood is also plentiful. This squid was presented to look a bit like a fish.

The sauce in this dish was of course rather flavorful and complex, as are most of the sauces I have had in China. The range of sauces, spices and flavors is much richer than one experiences in Chinese food in the U.S.

Even something that seems prosaic like tofu in chili sauce becomes a unique experience. This one was served hot, both in terms of temperature and spice:

Indeed, the goal was to try and eat it before it stopped sizzling, as it is considered to lose much of it’s flavor as it cools.

Finally, something a little different: Crab meat in shells, again with a very unique but more subtle sauce:

Friday Night Performance at The Shelter in Shanghai

Here are the details on the show I’m playing in Shanghai in Friday night:

PAUSE ::: PLAY

@ The Shelter
5 Yongfu Lu, near Fuxing Xi Lu, Shanghai

Friday, March 6, 2009

Line-up:
Amar Chaudhary, Uprooted Sunshine, V-nutz, Tootekool, Ben Huang, Michael Cai, Ozone…

* Celebrating the release of the Pause:Music Mix CD#2, the Uprooted Sunshine crew bring you a mad mash of the Jamaican sounds of reggae and dance-hall with new original vocals by ChaCha and MC Didje, put together by prime selecta Blaise Deville. There’s a limited number of free CDs, so come early to get yours!

* The man who rocked you on the first Pause:Music Mix CD, Ben Huang, returns after a long stay in Beijing, to bring you his latest eclectic and cutting-edge techno mix.

* Special guest Amar Chaudhary, from San Francisco, on his first performance ever in China. Amar Chaudhary is a veteran sound artist who makes his own instruments and plays a live set that’ll crack your head open. (Starts at 10:30pm sharp!!)
http://www.myspace.com/amarchaudhary

* We’ll also have Tootekool, Ozone, Michael Cai, V-Nutz bringing you everything from rock to alternative hip hop, to breakcore and drum-n-bass. Look out!

* It’s only 30 RMB at the door and the funds go to supporting and developing the local music scene through a variety of projects.

More info can be found here, or at facebook for those so inclined.

So…now I actually have to finish putting together a show. I have managed to put together a modest setup based on gear I brought with me, a few replacements (thanks Behringer for not making your mixer power supplies 220V compatibile), and several Chinese percussion instruments I have acquired during this trip:

The large bowl is very resonant and will be used to introduce the set. The interplay of the various bells and gongs with bell-like sounds on the Evolver will be the main elements, interrupted by more standard electronic sounds from the Evolver and the Kaos pad, as well some down-tempo beat-based sections.

It has been a bit of a challenge to find time to think creatively, while contending with work and some of the lingering effects of the time difference. I went back to the first day in Shanghai and it’s big city energy for inspiration, and some of the photos that I took, even if the music itself doesn’t seem to reflect that sonically.

CatSynth in China II

Well, for the second time in only two months, I will be visiting China. More opportunities to explore and hopefully build on the experience of the previous trip.

And this time, I will be performing a show in Shanghai at an electronic music event. Stay tuned for more details.

The unfortunate part is of course leaving Luna behind. This time, we’re past the construction, so things should be more peaceful for her, albeit a bit lonely.