Migrating Content to GitHub Blog

Hi there!

I decided that I would like to migrate this blog, or at least all the more technically oriented articles, to my new GitHub blog. So, you will see posts being moved out in the near future, for example this was already migrated.


Elastic Modes of a Metal Bar

So, I was planning to publish one of these tutorial-style posts per month, but things slipped a bit. But I did not forget about this, and this post is the last episode of the Modelling Acoustics with Open Source Software series.

So, without further due, let’s dig into the modelling of elastic modes with Open Source Software.

Continue reading Elastic Modes of a Metal Bar

Acoustic Modes of a Rectangular Room

In this episode about Open Source Acoustic Modelling we will look at how to make a simple Julia model of one of the simplest systems in acoustics, a rectangular room with rigid walls, assuming adiabatic wave propagation. Even if this system is among the simplest in acoustics, it is actually already very complicated. As such, we will focus only on the modes, one part of the problem, without attempting impulse response simulation or other fancy things like that, for now.

See this page for all the episodes in order of publication.

Continue reading Acoustic Modes of a Rectangular Room

What is Acoustic Modelling?

Welcome to the first actual episode of the series about acoustic modelling with open source software. We will first try to understand what modelling acoustics means. In reality it doesn’t mean just one thing, as many phenomena of acoustic wave production and propagation can be modeled and simulated in various different ways, with higher or lower degree of accuracy. However, the core of the modelling problem resides in partial differential equations. This post will be a very, very, brief, intuitive and not rigorous introduction to the topic, mainly to give context to those that are not accustomed to the concept. If you are experienced about physics and acoustics, you can completely skip this episode.

Continue reading What is Acoustic Modelling?

Where to Study Audio Acoustics

When I was completing my Bachelor degree in Physics, I started looking around to see whether I could find Universities offering courses in Acoustics, but with (mainly) audio applications in mind. Whilst many engineering departments might offer Environmental Acoustics programs, it is harder to find the ones about Audio Acoustics. I though it could be useful to summarize in this post the main options I found, both while I was looking around and afterwards.

Continue reading Where to Study Audio Acoustics

Entroware Apollo: The First Mechanical Failure

Although all I have to say about this laptop was concluded at this final review, I though it might have been appropriate to report the first significant damage this laptop occurred in.

This post is being written few months after the issue appeared (December 2017, more than two years after I bought the laptop) as I wanted to thoroughly test the way I fixed it before to report anything.

So, let’s have a look at what happened.

Continue reading Entroware Apollo: The First Mechanical Failure

Focusrite Scarlett 2i4 (Old Gen.) on Linux: a Honest Review

So, I have been using a Focusrite Scarlett 2i4 for quite some time. I have now changed to another cheaper interface, and I though it was a good occasion to draw my conclusions on what I think about the Scarlett.

Overall, my opinions are mixed. There are good pros about this device, but also few significant cons.

Although the product I am reviewing is not current anymore (there is a new generation out there now) I think it might still be useful to have a look into this, as it can give some insight about what kind of products and functionality we can expect from Focusrite.

Continue reading Focusrite Scarlett 2i4 (Old Gen.) on Linux: a Honest Review

Latency: Myths and Facts. Part 3: A look at a quantitative study.

In the previous posts about latency (Part 1 and Part 2) we informally talked about latency and its perception. We mostly made “rule of thumb” reasoning in order to arrive to some reasonable conclusion about latency, its perception and good latency thresholds.

In this post we will look instead at a scientific paper published on the topic: The Effects of Latency on Live Sound Monitoring by Michael Lester and Jon Boley. Perception of sound is a very counter-intuitive and complex phenomenon, it will be nice to see how our rule of thumb compares to a more appropriate scientific study of the matter. It is not uncommon, especially in this field, to see results completely different from what it was expected due to simple reasoning…

So let’s not loose any more time and let’s dig in!

Continue reading Latency: Myths and Facts. Part 3: A look at a quantitative study.

Did you vote for the last whatever election and you are proud of it? Most likely you just back-stabbed democracy (whatever you ended up voting for)

What wait? Wasn’t this blog about Linux/Audio stuff? Why this politics based topic? And how on earth the emblem of democracy, the act of voting, can be in any way not-democratic?

Well, for the first questions, as previously in the past, I feel sometimes that I want to write about something else.

As for the last question…

Continue reading Did you vote for the last whatever election and you are proud of it? Most likely you just back-stabbed democracy (whatever you ended up voting for)