Language Selection

English French German Italian Portuguese Spanish

Sound filtering... with the Gimp!

Filed under

Gimp is universally used for image manipulation. However, with a bit of creativity and a couple of tricks, it can also be used as an audio filter! Here is how…

Sound filters

If you are familiar with sound filters, you can skip this introduction. For those of you who don’t know about filters, here is a brief explanation.

A sound, like all signals, is measured in Hz (Hertz). That measure expresses the signal frequency. The lower the measure, the lower the frequency. A filter is a tool that enhances one or more signal frequencies, according to a criterion. In an ideal world, a filter completely suppresses undesired frequencies. Unfortunately, we don’t live in an ideal world.

I will concentrate on a single filter: low-pass. A real low-pass filter is something that receives an input signal and outputs its low frequency components. To be more precise, it attenuates those frequencies higher than a set one (the cut-off frenquency). As you see in figure 1, it just approximates theoretical behavior.

More here

More in Tux Machines

These Are the 5 Best Android Phones

But this kind of high-powered mobile computing won’t work on just any old Google handset. Here are the five best Android phones available today, all of which are either rumored or confirmed to get Marshmallow. Read more

LibreOffice 5.0.3 to Bring GTK+, DOCX Fixes, and More

The Document Foundation has revealed that the first Release Candidate for the LibreOffice 5.0.3 branch has been released and is now available for download. Read more

Mozilla, GSMA Publish Study on Mobile Opportunity in Emerging Markets

Mozilla has released a new report — — co-authored with the GSMA. Titled “Approaches to local content creation: realising the smartphone opportunity,” our report explores how the right tools, coupled with digital literacy education, can empower mobile-first Web users as content creators and develop a sustainable, inclusive mobile Web. Read more

Katharina Borchert to Join Mozilla Leadership Team as Chief Innovation Officer

We are excited to announce that Katharina Borchert will be transitioning from our Board of Directors to join the Mozilla leadership team as our new Chief Innovation Officer starting in January. Read more