Improved Processing of Sound with Photoshop

Posted on February 28, 2009 by John CS Keston

Michel Rouzic has just released version 1.4 of Photosounder that includes a new “lossless” mode so the output is identical to the input. Previously there was some loss of resolution importing the audio. From Michel:

Basically the lossless mode in question is a sort of 2D time-frequency filtering mode, kind of like some other programs like Audition 3 do by letting you airbrush on a spectrogram, that’s the idea basically. The difference here is that besides the brushes that Photosounder has, you can export the image to Photoshop and do some very precise filtering, for example making a sound feature disappear by hand, enhancing parts of a sound, subtracting to sound as I once did by making the difference between a song’s spectrogram and its instrumental version’s spectrogram to isolate the vocals, experiment with contrast, curves, levels, sharpening, various effects (I’m pretty sure you could for example try the glowing edges again and get a different sounding result).

To illustrate the lossless mode, here’s a segment of dialogue from a 1972 social commentary film in the public domain presented with the lossless mode on and again with it off. The lossless mode sounds exactly like the original waveform, while without the lossless mode the audio lacks resolution.

Photosounder Dialogue with Lossless Mode On

Photosounder Dialogue with Lossless Mode Off

Vocalese Vocoder Technique

Posted on February 27, 2009 by John CS Keston

Pluggo includes an interesting device called Vocalese. Basically, Vocalese is a virtual instrument made up of a collection of phonetic samples. If you’re clever, and very patient, you can paste these samples together to create words, thereby synthesizing speech. I wasn’t really interested in doing that, nor am I patient enough, but I liked the idea of using the instrument to drive a vocoder. In order to do this I created a MIDI sequence that played each one of the phonetic samples in the instrument. Then I used a plugin to randomize the notes in realtime, so the sequence is never the same. Then I directed the output into a vocoder plugin, followed by delay and reverb for atmosphere.

Vocalese Vocoder

Filthy Rhodes Loop at 110bpm

Posted on February 17, 2009 by John CS Keston

Love it or hate, the Rhodes is here to stay. Eventually we will have the Rhodes Mark 7, maybe even this year? Perhaps, in the distant future, after the patents expire, the Rhodes mechanics will become part of the public domain, similar to the acoustic piano, and be produced by a variety of companies. There might be a nine foot grand Rhodes, a studio Rhodes, a baby Rhodes, and an upright Rhodes. This chunk of “studio” Rhodes is running through loads of processing including MDAs RezFilter, delay and who knows what else.

110bpm Processed Rhodes

Pitched Loop from Some Kind of Adhesive

Posted on February 3, 2009 by John CS Keston

Here’s a short loop from one of our live sets. This clip is used in the piece Some Kind of Adhesive from One Day to Save All Life (Unearthed Music, 2008). I applied a little bit of knob turning on a few sends while laying down this segment, which is typical of how I use this clip during performances.

Pitched and Processed Loop

Harsh Backwards Resonated Rhodes

Posted on January 30, 2009 by John CS Keston

A variety of processing went into this segment of backwards Rhodes electric piano. I started with a chunk from a loop recorded during a recent performance. I reversed the chunk and then slightly time compressed in Ableton Live to give it a bit of a stutter. This caught my attention, so I dropped it onto a track that I had been using to test some processing including gate, distortion, Live’s paragraphic eq, compression, and delay. But in between the eq and the compressor I had added MDA’s RezFilter. I had also programmed a MIDI controller for adjusting the speed of the LFO and the maximum frequency on the plugin, so this gave me the tools to have some fun by automating these parameters while recording. There are some particularly harsh frequencies here, so I recommend starting out at low volume.