[eng]
Composed, recorded, produced and mixed by Turing Tarpit, February 2015.

Inspired by the American actress and inventor Hedy Lamarr.

Tracks:
- Audio samples related to Hedy Lamarr, launched randomly by a program written in ChucK programming language.
- Simulation of message encoding using the Frequency-hopping spread spectrum technique, written in ChucK programming language. In this case the message is the trumpet solo. Hedy Lamarr contributed decisively to develop the Frequency-hopping spread spectrum technique, that is still used in current technologies such as Bluetooth or Wi-Fi.
- Guitar + effects improvisation.
- Trumpet improvisation.

Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver.

Hedy Lamarr and composer George Antheil patented in 1942 a "Secret Communication System" that implemented a version of frequency hopping that used a piano-roll to change between 88 frequencies.

Adaptations of the FHSS technique in the ChucK code to get an audible and interesting result:
- Use of audible frequencies (sequences of musical notes).
- Frequency changes every 2 seconds (much faster in real FHSS).
- The Chuck program takes a sample of the signal (the trumpet solo) every 0,5ms.

See the ChucK code in our site http://turingtarpitmusic.com

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[cat]
Composat, grabat, produït i mesclat per Turing Tarpit, Febrer de 2015.

Inspirat en la figura de Hedy Lamarr, actriu i inventora estatunidenca.

Pistes:
- Samples de material relacionat amb Hedy Lamarr, llançats i troçejats aleatòriament amb un programa escrit amb el llenguatge ChucK.
- Simulació feta amb el llenguatge de programació ChucK, de la codificació de missatges usant la tècnica d'espectre eixamplat per salt de freqüència, que Hedy Lamarr va col·laborar decisivament a desenvolupar. Aquesta tècnica (o variacions) s'usa en tecnologies actuals com per exemple bluetooth o alguns estàndards Wi-Fi. En aquest cas el missatge és la improvisació de trompeta. 
- Improvisació de guitarra elèctrica + efectes.
- Improvisació de trompeta.

L'espectre eixamplat per salt de freqüència (Frequency hopping Spread Spectrum o FHSS) és una tècnica de transmissó en què un senyal s'emet sobre una sèrie de radiofreqüències aparentment aleatòries, saltant de freqüència en freqüència sincrònicament amb el transmissor.

Hedy Lamarr i el compositor George Antheil van patentar el 1942 un "Sistema Secret de Comunicacions" que implementava una versió del salt de freqüències utilitzant un piano-roll per canviar entre 88 freqüències.

Adaptacions de la tècnica que s'han incorporat al codi ChucK per a obtenir un resultat sonor interessant:
- Us de frequències audibles (sequències de notes musicals).
- Canvi de frequència cada 2 segons (en realitat és molt més ràpid).
- La senyal a transmetre és la digitalització de la improvisació de trompeta del tema. S'agafa una mostra cada 0,5ms.

El codi ChucK es pot veure al nostre web http://turingtarpitmusic.com

Ecstasy

This is an improvisation we did while rehearsing for a gig in Màgia Roja headquarters (23/05/2015). We improvise on the sound of a composition called Longplayer.

Longplayer is a one thousand year long musical composition. It began playing at midnight on the 31st of December 1999, and will continue to play without repetition until the last moment of 2999, at which point it will complete its cycle and begin again. Conceived and composed by Jem Finer, it was originally produced as an Artangel commission, and is now in the care of the Longplayer Trust.

Longplayer can be heard in the lighthouse at Trinity Buoy Wharf, London, where it has been playing since it began. It can also be heard at several other listening posts around the world, and globally via a live stream on the Internet.

Longplayer is composed for singing bowls – an ancient type of standing bell – which can be played by both humans and machines, and whose resonances can be very accurately reproduced in recorded form. It is designed to be adaptable to unforeseeable changes in its technological and social environments, and to endure in the long-term as a self-sustaining institution.

More about Longplayer at http://longplayer.org/

In some quiet parts of the improvisation you can hear a band playing in the neighbor rehearsing room. We've considered this as part of the improvisation.

Recorded live with a ZOOM H1. No overdubs.

Long distance player

Improvisation taken from our last concert at Màgia Roja HQ, based on "Song for Che" written by Charlie Haden and published in the album Liberation Music Orchestra (1969 - https://en.wikipedia.org/wiki/Liberation_Music_Orchestra_%28album%29). Other covers from Robert Wyatt  (https://youtu.be/O0SPQDRSnCE) and Otomo Yoshihide (https://youtu.be/hvsQfZCX3cM mindblowing!) have strongly inspired us.

Recorded live at Màgia Roja HQ, 23/05/2015. No overdubs.

Song for Che

The International Obfuscated Music Contest

Okonomiyaki

Vint Cerf

You'll be the first to go unless you think

Do while

Diga-li com vulguis

Lonely oscilator

Ook!

Lay lay delay

Contact:
rcasamajo@gmail.com
gammben@hotmail.com

What inspires us:

A Turing tarpit is any programming language that allows for flexibility in function but is difficult to learn and use because it offers little or no support for common tasks. Some esoteric programming languages (esolang - designed to test the boundaries of computer programming language design, as a proof of concept, or as a joke) such as "brainfuck", are specifically referred to as "Turing tarpits".  Usually, an esolang's creators do not intend the language to be used for mainstream programming, although some esoteric features, such as visuospatial syntax, have inspired practical applications in the arts. Such languages are often popular among hackers and hobbyists. Usability is rarely a goal for esoteric programming language designers—often it is quite the opposite.

"The danger of the tar-pit is that instead of developing a solution to a problem, you develop a tool for solving problems. And invariably, the wider the class of problems the tool can solve, the less useful it is for solving any one problem." Alan J. Perlis

"Beware of the Turing tarpit in which everything is possible but nothing of interest is easy." Alan J. Perlis

Turing Tarpit

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