22 Feb
2019

Convenience Store Synthesis o Sintesis de Tienda de Conveniencia es un generador de audio que mapea los pixeles de fotografías para activar grabaciones de audio y osciladores. El motivo elegido para esta obra es un mercado rústico del centro de Tulum, las características de esta construcción retratan la siempre cambiante e improvisadas técnicas que resultan de las limitaciones y necesidades de la región.

El mercado tiene una amplia variedad de productos. Que van de artesanías locales a comida procesada industrialmente, de fruta fresca a periódicos. Está construida con una variedad igual de rica de materiales, llendo de la madera a redes de metal y telas como cortinas. Las fotografías buscan mostrar esto, mientras buscan los patrones que puedan producir patrones rítmicos al ser interpretadas por el algoritmo.

Los samples o muestras de audio fueron grabadas en la locación con una grabadora de mano Sony UX560 y después postproducidas en Logic X para adecuarlas al algoritmo. El proceso generativo corre en Processing.org. Consiste de seis osciladores y tres reproductores de samples.

ENGLISH:

Convenience Store Synthesis i​s an audio generator that maps the pixels of photographs to trigger samples and oscillators. The motif chosen for this work was a rustic market at downtown Tulum, the characteristics of this building portrait the ever changing and improvised technics that arise from the limitations and needs of the region.

The market holds a wide variety of products. Ranging from local pottery to industrially processed food, from fresh fruit to newspapers. It is built with an equally rich range of materials, going from wood to metal nets and even fabrics as curtains. The photographs seek to showcase this, while looking for patterns that may produce rhythmic phrases when interpreted by the algorithm.

The samples were recorded on site with a portable Sony UX560 stereo recorder then post produced in Logic X to fit the algorithm. The generative process is run in Processing.org (v3.5). Consisting of six oscillators (two sine waves, two saw waves and two square waves), three sample players and a pink noise. The tuning of the oscillators is pre-established on a five note array formed by the notes G2# – C3 – D3 – F3 – G3 tuned in A = 432Hz. A hundred samples, fourteen photographs and two hundred sixty one lines of code merge to create this non stopping audio generator. The images are changed at will by pressing any key but the space bar finishes the video recording and stops the algorithm.

In the video preview we can see three and a half minutes of the audio generation. Depicting the “needle” and highlighted pixels as they travel along the changing photographs. The audio was recorded to the Sony UX560 line input and then it was mastered to fit broadcasting levels.