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Saturday, September 19, 2009

Teddy's biff

My cross-dressing Teddy has a new best friend, seen here in her finery, harnessed safe and secure in the bosom of fellow pulse modulator and amateur Ruxpin engineer Mike, with whom I've been corresponding about the ins and outs of our little friend and his/her sensitivity to radio interference. I had planned to take my act to Burning Man a few weeks back to help investigate the Doors of Perception with the various misfits freaks and weirdos of which I am proud to call myself a member, but work in all its aspects has been impeding my fun lately. This must stop of course, and the prevailing winds are beginning to change, to blow to leeward, so soon maybe Teddy and I can appear in public again together. Meanwhile, li'l red above will have to take our place in the world.

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Saturday, August 1, 2009

More on Teddy


Since some have asked, here's what I know about reverse engineering the original Teddy Ruxpin®. The original bear used normal compact audio cassettes, but with an opening along the top, where the metal tape indicator tab was later located. This way it could detect the difference between its own cassettes and commercial audio tapes, which would play out the speaker but not control the servos. The Ruxpin cassettes were recorded with a cloyingly mawkish story and music on one of the stereo tracks, the kind of music you can never get out of your head no matter how many emetics you ingest, and a control track comprised of a series of audio-level pulses on the other.

Pictured at the top is a detail of two quasi-periods of the control track, consisting of a set of nine positive-going pulses. Each pulse is about .25 msec wide, actually .27 for the 'blue box' I built so many years ago, and the time between pulses is what controls the servos. That is, the time between pulse 0 and pulse 1 in each group of nine controls one servo, and the distance between pulse 1 and pulse 2 controls the next, and so on. The time between pulses from a fully open to a fully closed servo varies from about 1.25 msec to 2 msec, measuring from leading edge to leading edge. The leading edge of pulse 0 of next group of nine is about 6.5 seconds from the leading edge of the last pulse of the previous group of nine. The total period of the groups is not fixed - you can hear the overall pitch change as they move. My main bear is one of the two servo variety, and for that animal the interval from pulse 1 to pulse 2 controls the eyes and from pulse 2 to pulse 3 controls the mouth. Later bears had a separate control for upper and lower jaw, and if you hook Teddy to Teddy's friend Grubby®, a pleasantly disgusting and seemingly out of scale and of a different cartoon aesthetic big grub-like creature, you will find that the other pulse to pulse modulations come into play to control him as well.

Originally I sent the control signal in using a CD to cassette adaptor and then recorded actual cassettes, but as I've resurrected the project in more recent days I decided to do some surgery (note crime-scene-like photo above) and bypass the heads on the crappy built-in cassette player. I attached a mini phone jack directly past the play heads and it seems to work to send the signal in from a dime-a-dozen mp3 player. One has to be a bit careful of the levels - too high or too low on the control track and the bear becomes subject to a variety of muscle spasms or alternately is sent into a catatonic state. Also, running the low-level wires out of the bear makes it subject to radio interference, and cell phones held close to the bear can also elicit the abovementioned palsies. I went a little further and hooked up battery powered amp/speaker combination inside since the built in speaker is also pretty bad. It's meant to be heard by a small child sitting in a quiet room alone with the somewhat scary bear toy and is not quite up to entertaining a packed opera house.


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Saturday, July 4, 2009

Teddy

I have been fortunate enough in my career to have a few people get very excited about a few works of mine, an heartwarming occurrence. Although, two people that I respect awfully have chosen atypical and offhand works of mine from the mid 80s as their favorites. One was a theatrical work based on a game between the San Francisco 49ers and the Denver Broncos during the Joe Montana glory years, written with Everett Shock, and featuring a recitation of a declaration, aided by an overheard projector on which the declaimer laid out an Xs and Os play-by-play, in the style of the Declaration of Independence (a memory fitting this day of all days), but commencing with the line "when, in the course of a football game, it becomes necessary for one team" and so on.

But the other venture, which has been favorited by more than one of my erstwhile fans, was a small piece done in a small venue in Oakland, where I performed a duet with a Teddy Ruxpin® which centered on themes of objectophilia and robot sex in the modern world. In fact, the exact animatronic doll sitting on my desk today in the photo above being prepared for a comeback tour of sorts next month. You can see the blue pulse timing modulation box I built back in my 'maker' days to control its servos and to allow me to make my own, more sophisticated control tapes. My son, who was about 2 at the time, loved it, although it's possible that some of the themes may have gone over his head. He giggled all through the preceding performance that evening, in which a topless and somewhat buxom young butoh dancer, powdered in white, completed, in about ten minutes, a short walk down an incline.

Since the script was quite short, I reproduce it here for your amusement. As my wife was the voice actor for the bear, I performed a small transgendering of Teddy to Trary, and put a bit of ribbon in his hair.

TRARY
(Sings) Come dream with me tonight. (Speaks) Hi, my name is Trary Razkovky. Can you and I be friends? I really enjoy talking to people. In fact, some people have told me I have a problem that way, but I don't count these people among my friends. And I do have many many friends.
I would very much like you to meet one of my very good friends. Say hello to everyone, Erling.

ERLING
Hello.

TRARY
What do you have there with you, Erling?

ERLING
It's an accordion, Trary.

TRARY
It is a very fine looking instrument, Erling. (Pauses) Can you come a little closer, my friend?

ERLING
Sure. (moves closer)

TRARY
(After a while) I'd like to talk to you about something, Erling, if that's all right.

ERLING
Fine.

TRARY
I read a story in the newspaper.

ERLING
What was it about?

TRARY
A very fine car dealership in St. Louis, Missouri had a contest. The dealership was to give to the winner a brand new Toyota. The single rule of this contest and the objective of those who participated was to kiss the car longer than anyone else. Of course, I was concerned for these people. How would they go to the bathroom? How would they eat or drink? People need companionship too, but I guess they were kissing the car, after all. Luckily, the very wise people at the car dealership had thought of this. They gave each person a few minutes off every hour to take care of the things that they had to.

ERLING
So who won, Trary?

TRARY
A woman won. Her name was Ellen J. Twaddle. She won by kissing the car for 110 hours, longer than anyone else who tried.

ERLING
That's an amazing story, Trary.

Um, why did you bring it up?

TRARY
Well, I began to wonder. How does she feel about the car she has won by kissing it for so long?

ERLING
I don't know.

TRARY
Well, wouldn't she be more attracted to it?

ERLING
Maybe.

TRARY
Maybe it would seem a little more animate? Wouldn't there be, well, a cognitive dissonance in kissing something for so long that one saw as inanimate?

ERLING
Yes, I think you're right, Trary. If she had seen it as inanimate, she would be repulsed, not attracted.

TRARY
That's right, Erling. But she stayed. She even lost her job. Her company was upset with her when they found out why she had been calling in sick for five days.

ERLING
That's quite a sacrifice.
(pause)

TRARY
Would you kiss me, Erling?

ERLING
Sure. (Erling kisses Trary for a long time)

TRARY
(mumbling through the kiss) I hope you see me in a new light.

ERLING
(drawing back) What was that?

TRARY
I said, "That was nice."

I think I am in the mood to sing a song for all the people here. Could you accompany me on the accordion, Erling?

ERLING
Sure. (Trary and Erling perform The Second Prayer from A Little Girl Dreams of Taking the Veil.)

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