Category Archives: Music

Audio Toolkit: ATKCompressor and ATKExpander Implementation

I’d like to talk a little bit about the way a compressor and an expander can be written with the Audio Toolkit. Even if both effects use far less filters than the SD1 emulation, they still implement more than just one filter in the pipeline, contrary to a fixed delay line (another audio plugin that I released with the compressor and the expander).

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Announcement: ATKCompressor 1.0.1, ATKExpander 1.0.1

I’m happy to announce the release of two new audio plugins based on the Audio Toolkit. It is available on Windows and OS X (min. 10.8) in different formats.

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Audio Toolkit: Optimization of the overdrive simulation

I’ve explained in earlier posts how to simulate a simple overdrive circuit. I’ve also explained how I implemented this in QtVST (and yes, I should have added labels on those images!), which was more or less the predecessor of Audio TK.

The main problem with simulating non linear circuits is that it costs a lot. Let’s see if I can improve the timings a little bit.

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Book review: The Audio Effects Workshop

How to explain the different kind of audio effects and how to understand what their use is? Although I learnt a lot by practice, there is sometimes the need for some theory and for experiments. I tried to find a book that matches these two points: good theory and proper practice. I’ve chosen this book, with tracks on a CD for experimentation. Was it really what I was looking for?

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Book review: SONAR X1 Power!: The Comprehensive Guide

I think I’ve said it already, I have a rock band. Currently, we are recording our first album, and while we used Traktion in the past, I’m considering moving to Sonar (it is continuously updated and has a great reputation, also I’ve played a few time in the past with its ancestor Cakewalk).

So let’s talk about the book’s comprehensive guide.

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Announcement: QtSimpleEQ 1.0 (QtVST)

I’m pleased to announce the 1.0 version of QtSimpleEQ, a plugin with one low-pass, two peak and one high pass second-order filters. Nothing fancy in the algorithms, it’s mainly another show case for Qt VST plugins.

The code is available under the GPL2 on github and on Sourceforge.

The plugin can be download on the Sourceforge project page.

The plugin was tested with Tracktion 3 (Windows XP).

Snapshot:

QtSimpleEQ UI

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QtVST, Qt and QtSimpleEQ

Today, I wanted to announce my new plugin, a 4-bands EQ, but when I started a test with pyVST, I encountered strange things:

  • The first is my fault, as the code of the EQ disappeared from my Git repository, so I have to code it again. Mainly it is just plugin the correct actions between the filters and the GUI.
  • The second is an error at the end of the test. I’ve updated my Qt version from 4.7.1 to 4.7.4, and since this update (or perhaps since I updated to Python 2.7 for pyVST), I found that even a recompiled QtSimpleOverdrive has the same behavior. It did not when I released it. It seems that Qt is complaining about events that are bounced between different threads, but the actual error message is more cryptic, and impossible to debug the application at this point.

I hope to fix these mistakes this month, I really hope I can get QtVST to work again.

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Announcement: QtSimpleOverdrive 1.2 (QtVST)

I’m pleased to announce the 1.2 version of QtSimpleOverdrive.

Since last version, the GUI was changed, and mainly the automation has been fixed. As such, old parameters are no longer valid, sorry…

The code is now available under the GPL2 on github and on Sourceforge.

The plugin can be download on the Sourceforge project page.

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