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Zotero reference manager



Zotero is a free and open source reference and bibliography manager, and seems a compelling alternative to BibDesk (support for Word) and EndNote (expensive).

2D Delaunay spatialisation in Max (finished)


2D Delaunay spatialisation in Max (finished) from Trond Lossius on Vimeo.

Here is an updated video demonstrating the 2D Delaunay triangulation approach to spatialisation for arbitrary speaker layouts.

I have continued development and now consider it done. The new addition over the last week is to track the convex hull. If source position moves outside the convex hull (the area covered by loudspeakers) only the two speakers at the nearest edge are used, and volume will roll off with increasing distance.

I’ll wrap this up as a package, so that it can be shared.

2D triangulation-based spatialisation approach


2D Delaunay spatialisation in Max from Trond Lossius on Vimeo.

This is a demo of some Java code I have been developing recently that offers an alternative spatialisation approach to DBAP for arbitrary 2D loudspeaker configurations. It is intended for installaiton setups with speakers distributed/scattered in ways that breaks with the common “sweet spot” assumption.

It uses Delaunay triangulation and distributes sound to the three speakers of the current triangle with constant amplitude. On the edges between triangles spatialisation folds down to standard constant intensity panning between the two speakers at the end points of the edge.

While DBAP uses all of the speakers all of the time, this approach uses only the three nearest speakers surrounding the source point.


The idea for this implementation came up in a conversation I had with Ville Pullki some years ago in Helsinki. The java code is based the cataLib by Jão Menezes. His code is again based on earlier code by Yoshihito Yagi.

Testing Aalto COMPASS ambisonics decoder


There has been quite a bit of development of higher-order ambisonics plugins in recent years. Today I have been testing the latest version of the COMPASS recorder that comes as part of the SPARTA plugins fro Aalto University. SPARTA is short for Coding and Multidirectional Parameterisation of Ambisonic Sound Scenes, a somewhat similar approach to the Harpex plugin.

Below is a binaural rendition of some tests I have done today.

I have a mono source (Butterfly by Grieg) encoded using Blue Ripple the Shoebox. Thjis encodes with distance clues and early reflextions emulations within a shoebox space. In addition I am using the BlueRipple Reverb, but with early reflextions disabled (as they are already taken care opf by Shoebox).

Decoding is done using COMPASS. I have set it up to work with 16 speakers according to the setup at my studio, and here I’m doing a virtual binaural endition of what it sounds like over those 16 speakers.

Please listen using headphones. I am continuously moving the sourcve around within the shoebox space as can e seen in the purple plugin interface at bottom left.

The Atmospherics at Entrée



Trond Lossius & Jeremy Welsh
The Atmospherics – River deep, mountain high
Entrée Gallery, Bergen-

February 7 – 17 2019
Thursday – Sunday
open: 5 – 8.30pm (loop)

The Atmospherics is one of the ongoing collaborative projects of Trond Lossius and Jeremy Welsh. Through field recordings they capture unique qualities from different natural landscapes and urban areas. The recorded audio and video material is then filtered, edited, modified and mixed to highlight some characters or to mute others. The intention is not to document the sites, but rather to build a database of audiovisual material that is combined in different ways in their installations, where each assembly becomes a “temporary place”, constructed of impulses from different geographical areas.

Since 2014, the project has moved from Bergen, Trondheim, Arendal, Førde, Utne and Campania, Italy, where it has been presented in various installations with multi-screen video and multi-channel audio. The new video adapted to the cinema format, which premieres at Entrée, summarizes this entire project, and combines material from all the different phases and parts of the country.


Creative Commons License Licensed under a Creative Commons Attribution 3.0 Norway License. Web site hosted by BEK.