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Chaos in Audio: Self-Similarity

Audio Musings

Back in the early 90s, the term “chaos theory” was often bandied about as THE FUTURE. It was never clear exactly what chaos theory would be THE FUTURE of, but it was clearly important stuff. Fast forward 20 years,…

Z-DSP Shimmer Cartridge

Pitch Shifting, reverb, Reverb Beards, Shimmer, ValhallaShimmer, Z-DSP

I am happy to announce that the Z-DSP Shimmer cartridge has been released. The Z-DSP Shimmer cartridge has 8 original algorithms, designed to combine lush reverberation with multiple voices of pitch shifting, to create ethereal pads, rich chordal textures,…

ValhallaPlate, Diffusion, and Presets

Diffusion, DSP Philosophy, Plates, reverb, Reverb Beards, reverb design, Reverbskägg

One of the goals for ValhallaPlate was to have a minimal user interface. The goal was to have as many controls as necessary to sculpt beautiful plate reverberation, but no more. Any parameters that were deemed superfluous, or…

ValhallaPlate: The Reverb Modes

Plates, reverb, reverb design, ValhallaPlate

The primary goal when creating ValhallaPlate was to create an accurate model of a plate reverb. I wanted something that sounded and behaved like a cold rolled steel plate. This meant analyzing and listening to every plate example…

ValhallaPlate: The Controls

GUI, Plates, reverb design, ValhallaPlate

ValhallaPlate was designed from the outset to be easy to use, and to sound good with basically any parameter settings. This is a natural consequence of being inspired by plate reverbs. An EMT140 usually had between 1 and 2…

The Physics and Psychophysics of Plates

Plates, Reverb Beards, reverb design, Reverbskägg

Plate reverberators were introduced in 1957 with the EMT140. This was touted as a compact alternative to a reverberation chamber. This is true, as long as you consider a 400 pound twin mattress-sized box to be “compact.” By…

The characteristics of reverb chambers versus plates

Chambers, Plates, reverb, Reverb Beards, Reverbskägg

Plate reverbs have some distinctive characteristics: Instant onset of reverberation Instantly high echo density Bass RT60 (reverberation decay time) that is considerably longer than the midrange Fairly short RT60 for the treble frequencies, no matter what the reverb…

Introducing Valhalla Plate

Plugins, reverb, Reverb Beards, reverb design

I am happy to announce the latest plugin in the ValhallaDSP lineup, ValhallaPlate. Plate reverbs have been an obsession of mine for a long time. As a reverb developer, the physics of plates are fascinating. The physical structure…

Slides from my AES Reverb presentation

reverb, Reverb Beards, reverb design

I was invited by the Seattle chapter of the Audio Engineering Society to speak about reverbs and reverb design. I threw together some slides: AES2015ReverbPresentation Pretty skeletal deck, but it was (hopefully) more entertaining when presented in person.…

The System. Is Down. The System. Is Down.

under construction

Starting on October 15th, 2014, the Valhalla DSP website will be switching over to a new web server. The DNS switching may take 24 to 48 hours. During this time, there will probably be times where the website…