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

Lubuntu 16.10 Beta Out Now with Linux Kernel 4.4 LTS and the Latest LXDE Desktop

As part of today's Ubuntu 16.10 (Yakkety Yak) Beta launch, Simon Quigley from the Lubuntu Linux team released the first Beta build of the upcoming Lubuntu 16.10 operating system. Read more Also: Ubuntu MATE 16.10 (Yakkety Yak) Beta Removes the Heads-Up Display (HUD) Feature Ubuntu GNOME 16.10 Beta 1 Released with GNOME 3.20 and GNOME 3.22 Beta Apps Ubuntu 16.10 "Yakkety Yak" Beta Released, Ubuntu GNOME Has Experimental Wayland

Facebook open sources its computer vision tools

Red Hat Enterprise Linux 7.3 Beta Adds NVDIMM Support, Improves Security

Today, August 25, 2016, Red Hat announced that version 7.3 of its powerful Red Hat Enterprise Linux operating system is now in development, and a Beta build is available for download and testing. Red Hat Enterprise Linux 7.3 Beta brings lots of improvements and innovations, support for new hardware devices, and improves the overall security of the Linux kernel-based operating system used by some of the biggest enterprises and organizations around the globe. Among some of the major new features implemented in the Red Hat Enterprise Linux 7.3 release, we can mention important networking improvements, and support for Non-Volatile Dual In-line Memory Modules (NVDIMMs). Read more Also: CentOS 6 Linux OS Receives Important Kernel Security Update from Red Hat Release of Red Hat Virtualization 4 Offers New Functionality for Workloads