I’m happy to announce the release of a mono autoswell based on the Audio Toolkit. They are available on Windows and OS X (min. 10.8) in different formats.
This plugin applies a ratio to the global gain of a signal once it is higher than a given threshold. This means that contrary to a compressor where the power of the signal will never go lower than the threshold, for AutoSwell, it can.
Continue reading Announcement: ATKAutoSwell 1.0.0
DK method is explained at large by David Ye in his thesis. It’s based around nodal analysis and was also extensively used by cytomic in his papers.
When analyzing a circuit form scratch, we need to replace all capacitors by an equivalent circuit and solve the equation with this modified circuit. Then, the equivalent currents need to be updated with the proper formula.
Continue reading Analog modeling of a diode clipper (4): DK-method
Let’s dive directly inside the second diode clipper and follow exactly the same pattern.
Continue reading Analog modeling of a diode clipper (3b): Simulation
I work in an international company, and there are lots of people from different cultures around me, and with whom I need to interact. Out of the blue, it feels like it’s easy to work with all of them, I mean, how difficult could it be to work with them?
Actually, it’s easy, but sometimes interactions are intriguing and people do not react the way you expect them to react. And why is that? Lots of reasons, of course, but one of them is that they have a different culture and do not expect you to explicitly tell them what they did wrong (which is something I do. A lot).
Continue reading Book review: The Culture Map: Decoding How People Think and Get Things Done in a Global World
Now that we have a few methods, let’s try to simulate them. For both circuits, I’ll use the forward Euler, then backward Euler and trapezoidal approximations, then I will show the results of changing the start estimate and then finish by the Newton Raphson optimization. I haven’t checked (yet?) algorithms that don’t use the derivative like the bisection or Brent algorithm.
All graphs are done with a x4 oversampling (although I also tried x8, x16 and x32).
Continue reading Analog modeling of a diode clipper (3a): Simulation
Let’s start with the two equations we got from the last post and see what we can do with usual/academic tools to solve them (I will tackle nodal and ZDF tools later in this series).
Continue reading Analog modeling of a diode clipper (2): Discretization
I’ve decided to create a real space for Audio ToolKit. The idea is to make it more visible, with a consistent message to the users.
In addition to this move, this blog has move to a subdomain there (and you may have noticed it) and Audio ToolKit documentation as well.
Continue reading Announcement: Audio ToolKit moves to its own website
I’ve published a few years ago an emulation of the SD1 pedal, but haven’t touched analog modeling since. There are lots of different methods to model a circuit, and they all have different advantages and drawbacks. So I’ve decided to start from scratch again, using two different diode clippers, from the continuous equations to different numerical solutions in a series of blog posts here.
Continue reading Analog modeling of a diode clipper (1): Circuits
This is mainly a bug fix release. A nasty bug on increasing processing sizes would corrupt the input data and thus change the results. It is advised to upgrade to this release as soon as possible.
Continue reading Announcement: Audio TK 1.1.0
I have trouble with slides. I hate them. I’ve followed a training of presentation to make better ones, and with more or less no slides anymore. I liked that training very much, but it’s difficult to apply to scientific presentations. As such, I’ve decided to read this book who is about scientific presentations (published by IEEE-Wiley) and to see how other people apprehend slides.
Continue reading Book review: Slide Rules: Design, Build, and Archive Presentations in the Engineering and Technical Fields