### Announcement: ATK SD1 3.0 and ATK TS9 1.0

I’m happy to announce the update of SD1 and a new release of TS9 based on the Audio Toolkit and JUCE. It is available on Windows (VST3) and macOS (min. 10.11, x86_64 and ARM64) in different formats.

SD1 is a full rewrite of one of my first plugins with the help of Audio ToolKit Modelling. It allowed me for a closer match with the original circuit without having to optimize the equations myself.

TS9 is a Patreon-only plugin, although the source is freely available. The same technology was used to emulate the drive and tone-control as what was used for SD1. The sound is similar yet different.

### Installing HomeAssistant on a Raspberry Pi

I’m a huge fan of home automation. I started studying the KNX standard more than a decade ago, and I wanted to automated everything in my home. One day.

In the last decade, we saw the apparition of lots of new standards, not just for lighting and heating, but also for everything else. Unfortunately, it’s rarely compatible with each other. I saw a few projects int he fast, and recently saw HomeAssistant in an article, and decided to try it.

### The over-whole MT2 tone (and the bass variation)

This entry is part 1 of 13 in the series Analog modelling

In the last blog post, we saw the individual effect of each stage of the Boss MT2 pedal. But with all these effects impacting each other, what is the final find of spectrum that we get?

### The MT2 pedal sections: analysis

This entry is part 2 of 13 in the series Analog modelling

In the previous entry in this series, we saw the effect of the gyrator in a circuit. Now we can analyse each stage individually.

### Announcement: ATK MTB (Adapted Boss medal emulation)

I’m happy to announce the release of ATK MTB based on the Audio Toolkit and JUCE. It is available on Windows (VST3) and macOS (min. 10.11, x86_64 and ARM64) in different formats.

MTB is a variation of the MT2 plugin geared towards the bass. The cut frequencies for the different filters are lowered to match the bass frequencies better. As such, MTB spills less in high frequencies than MT2. Not that MT2 cannot be used for the bass if that’s the sound you are looking for!

This plugin requires the universal runtime on Windows, which is automatically deployed with Windows update (see this discussion on the JUCE forum). If you don’t have it installed, please check Microsoft website.

### Announcement: ATK MT2 1.0 (Boss pedal emulation)

I’m happy to announce the release of ATK MT2 based on the Audio Toolkit and JUCE. It is available on Windows (VST3) and macOS (min. 10.11, x86_64 and ARM64) in different formats.

This mono plugin emulates the full pedal up to the non-linear post tone shaping circuit and uses standard SVF filters for the tone controls and allows for finer Q tuning as hidden parameters. More information on how the pedal and the plugin work is available on this page.

This plugin requires the universal runtime on Windows, which is automatically deployed with Windows update (see this discussion on the JUCE forum). If you don’t have it installed, please check Microsoft website.

### Analysis of the Boss MT2 Metal Zone pedal (2)

This entry is part 3 of 13 in the series Analog modelling

After a long pause, let’s go on on our MT2 discovery trip. Last time, we analyzed the perfect gyrator that is sometimes used to replace coils.

### What is the future of Audio ToolKit?

As 2021 begins, there are a few changes in how AudioToolKit will grow in the future.

The first important point is that all repositories will now be on a dedicated space on GitHub. The reason is that there are many projects on my own page and Audio ToolKit was basically hidden there.

There was also a unique repository with all plugins that I designed, and it started to be very messy, with some projects that don’t even build anymore. One of the objectives of 2021 will to create a dedicated repository for these plugins and release them again, with JUCE 6 and Audio ToolKit 3.2.

Another project that I have been working on is ATK Modelling. I already presented some work on it at ADC18, but I decided now to make the project public. It’s the project I have worked the most in the past few months, and it is now at a stage where we can model lots of pedals. So on top of new articles on ATK Modelling, there is going to be more on the MT2 pedal, a series I started before the pandemic, and hopefully a release of a full guitar version as well as an adaptation for bass.

As I’m rewriting the plugins, I’m also thinking about their GUI, and if you have ideas for better UIs, please let me know, I would gladly use outside help to create nice and usable ones.

### How to model an opamp? (the implications on simulation)

This entry is part 4 of 13 in the series Analog modelling

It’s a question I always asked myself. Models in SPICE are usually for full models, or you can use a gain voltage gain as well. What are the implications of selecting one model over another for a real time model? Let’s go for the more complex model to the simplest ones.

### Should I invert my matrix or not?

This entry is part 5 of 13 in the series Analog modelling

In almost all analog modeling algorithms, we solve a (non-)linear system they require at some point to solve $A x=y$, with given $A$ and $y$. Depending on the size of the matrix and its characteristics, computing an inverse can be costly and may incur numerical problems. Let’s tackle cost in this discussion.