Language Selection

English French German Italian Portuguese Spanish

Sound filtering... with the Gimp!

Filed under
GIMP

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

today's howtos

Leftovers: Gaming

Red Hat and Fedora

Canonical and Ubuntu

  • OpenStack Solution Provider Awnix Joins Canonical's Cloud Partner Programme
    Canonical has been excited to announce that Awnix, an OpenStack solution provider with over 25 years of experience designing systems for enterprise data center environments, has joined its Partner Reseller Programme for cloud solutions.
  • Docker Has No Plans to Ditch Ubuntu in Favor of Alpine Linux - Report
    If you've been reading the news lately, you may have heard rumors that Docker founders hired the developer of Alpine Linux, a small, text-based distribution, to move the official Docker images away from the Ubuntu infrastructure.
  • More Android Vendors Said To Be Eyeing Ubuntu Phones This Year
    A greater number of Android smartphone/tablet vendors are said to be eyeing Ubuntu Phone for new devices later this year. In an interview published this morning by The Register, Canonical CEO Jane Silber talked about their communications with more (unnamed) Android vendors and supposedly seeing some other vendors offering Ubuntu Phone products later in 2016.