Points of Departure, July 2026

Page in progress – Phil Edelstein, July 2026

Introduction

This is a collection of point in time notes including: Shared Convolution prototype, future variations for consideration and links providing some background and related materials.

Rather than a traditional structured website and home page, I’ve come to use this this site as a means of annotation and expression in keeping with an orientation for creative personal and collaborartive projects. This page is one of many points of entry and departures. A more general context for the larger arc of Composers Inside Electronics here.

Shared Convolution Prototype

As of this writing July 2026, working with Jakob Edelstein, we have taken an idea of a model of an audio signal applied to a resonant object and produced a prototype web app accessible … Shared Convolution

This virtual model is a descendant from work with David Tudor, John Driscoll, Rainforest and CIE from the early 1970’s. The original physcial in-real-life origin was a series of performances and installations using audio transducers connected to resonant objects as a fundamental means of establishing spatial sound field.

The basic idea from Rainforest is a sound source is applied via a transducer to a resonant object this emits a localized sound and can be used for imput to amplification or further processing.

With the advent of readily available software based convolution reverbs around 2010, the technology offered a new set of possibilities.

The Shared Convolution prototype allows a visitor to scan a QR code and access a web application that allows selection of an audio sample file, the “impulse” from a resonant ovject or space and select either single or automated play. Ths latest realization involved rapid prototyping using Gemini and Claude for code generation. The web app allows a users to select an audio “sample” fie from a predetermined library, am “impulse” from a separate library and hear a single play or automation of variations in an automated mode. Related development prototypes includee:

  • message based on user activity sent to influence the sound field and motion of sculptural objects
  • access to smartphone and table interial motion unit (a.k.a. gyroscope, acceleromter, compass) and smart phone microphone, GPS,
  • interactions between users – for instance, characteritic of he sound modified by coordinated gesture of the users. For exampe, a sound or motion variation of the installation is modulated if multple users orient their phone in a coordinated manner (e.g facing north).

Other Future Variations

Open Mic Variations

One readily accessible diretiion is to set up microphone and encourage users(visitors, participants, performers) to brinth the speaker on their phone to the microphone which then in input to further moduclation and spatialization.

Gestures

User and performer getures can be projected into the space in various ways.

The sensors in smart phones and tablet contain sensitive sensors (the IMU) that product data reated to the orientation an moton of the device that can be used to influence the sound field and motion of moving loudspeakers.

Related Materials

Here are links in various forms to related materials.

As List or URL’s with some context

Here is an annotated list with some contextual commentary.

Embedded Summaries with the synopsis automacially extracted

Here are links with the embedded summaries from each page and post.