Forthcoming Meetings

Creature Sound Design

Date: 6 Oct 2016
Time: 18:30

Location: The Hub, Pacific Quay
The Hub at Pacific Quay

The Scottish Group are delighted present a lecture by Orfeas Boteas and Matthew Collings from Edinburgh based company Krotos Ltd on “Creature Sound Design”.  This event will take place at The Hub which is part of Glasgow School of Art’s Digital Design Studio at Pacific Quay.


Talk abstract

Designing sound for custom creatures for film, TV and games can be a time-consuming and costly procedure. We will discuss traditional methods of going about this process, as well as more contemporary solutions, including real-time processing. We’ll also discuss treating this aspect of sound design as a performance, focusing on the expressivity and subtle nuances that can be achieved by taking this approach.

Company biography

Krotos Ltd is an independent company founded in 2013. We are based in Edinburgh, Scotland and we develop unique audio software products. Our software is being used by AAA game companies; Hollywood studios and top-notch post-production companies around the world.



Orfeas Boteas

Orfeas Boteas is the founder of Krotos and inventor of Dehumaniser. He developed, brought the product to market and reached thousands of professionals with no external funding. With years of experience in the entertainment industry, he holds a BSc in Music Technologyand Acoustics and an MSc in Sound Design. He was a Royal Society ofEdinburgh Fellow and was given the Young EDGE Award in June 2014, the EIE Pitch of the Day Award in 2015 and the Edge Higgs Award in 2015.
Matthew Collings

Matthew Collings is a composer, sound artist and programmer based in Edinburgh. He received an ALT-W award from New Media Scotland in 2012 for ‘The Third Mind’, an algorithmic cinema performance and installation with Erik Parr, premiered at sell-out shows at Glasgow’s Centre for Contemporary Arts (CCA).

He was recently invited to participate at the 50th Design Biennial in Ljubliana, Slovenia (2014). His work has also featured in Installations at Glasgow City Halls (2011), Glasgow Royal Concert Hall, Dundee Neon Digital Arts Festival (2010, UK), Burning Man Festival (2010, USA), Chattanooga Gallery of Contemporary Art (2010, USA), Icelandic Academy of Arts (Iceland, 2009) and Manipulate Festival (UK, 2011).

The Devinyliser - A Modern Approach to Non Intrusive Rumble Filtering by VLF Crossfeed with High Filter Slopes

Date: 11 Oct 2016
Time: 18:30

Location: King’s College London, Strand Building, Room S-3.20

Please note that the room number is S minus 3.20 (3rd basement).

Lecture by Douglas Self

Vinyl discs create subsonic anti-phase signals because they are never perfectly flat and cause vertical stylus movement. This is often made worse by cartridge-arm resonance, giving amplitudes peaking around 10 Hz and requiring 40 dB of attenuation to reduce them to the vinyl noise floor. A conventional rumble filter needs very steep slopes to do this without unduly affecting the bottom of the audio band at 20 Hz.
L-R crossfeed at low frequencies cancels the anti-phase signals, converting bass information to mono. This is not a new idea but has never caught on, probably because in published implementations the anti-phase filtering slope always comes out as -6dB/octave, no matter what order of lowpass filter is used to control the crossfeed. It is demonstrated that time-correction of the lowpass filter group delay with simple allpass filtering gives a much steeper slope of -18dB/octave for 2nd, 3rd, and 4th-order Butterworth filters, and intrusion into the audio band is minimised; this is believed novel. A practical design using 2nd-order filters was built and measured, and gave the desired results.

Douglas Self studied engineering at Cambridge University, then psychoacoustics at Sussex University. He has spent many years working at the top level of design in both the professional audio and hifi industries, and has taken out a number of patents in the field of audio technology. He currently acts as a consultant engineer in the field of audio design.

Psycho-acoustics of loudspeaker design

Date: 8 Nov 2016
Time: 18:30


Lecture by John Watkinson.

Venue TBC.

The loudspeaker has been the weak link in sound reproduction for many years. This largely remains the case despite dramatic progress in the understanding of the Human Auditory System and the availability of advanced materials and electronics at relatively low cost, neither of which have been widely exploited.

In this presentation John Watkinson looks at the psycho-acoustics that underlies the creation of extraordinarily realistic loudspeaker designs, especially with regard to functioning with rather than against the listening environment. He then looks at the psychological factors which prevent their widespread adoption.

Precision loudspeakers will be demonstrated, including an audition of material from a forthcoming album which will be played on the very speakers on which it was mixed.

John Watkinson is a Fellow of the Audio Engineering Society, an alumnus of the Institute of Sound and Vibration Research and was the Technical Director and a founder of Celtic Audio Ltd. His book “The Art of Digital Audio” was described by New Scientist as the bible of an industry. A polymath, he is active in fields such as high quality still and moving imagery and he has developed ways of computing vehicle speeds from video recordings for forensic purposes. His latest book, entitled “The Art of Flight”, is published this year by the American Institute of Aeronautics and Astronautics.