Spek

Spek generates a spectrogram for the input audio file.

Spek is an acoustic spectrum analyser written in C++. It uses FFmpeg libraries for audio decoding and wxWidgets for the GUI.

Spek is available on *BSD, GNU/Linux, Windows and Mac OS X.

Find out more about Spek on its website: https://www.spek.cc/

SYNOPSIS

spek [OPTION ...] [FILE] [PNG] [WIDTH] [HEIGHT]

ARGUMENTS

FILE : Audio file to be analyzed.

PNG : Write spectrogram to this PNG file then exit.

WIDTH : Initial width of the spectrum in pixels.

HEIGHT : Initial height of the spectrum in pixels.

OPTIONS

-h, --help : Output the help message then quit.

-V, --version : Output version information then quit.

KEYBINDINGS

Notes

On OS X use the Command key instead of Ctrl.

Menu

Ctrl-O : Open a new file.

Ctrl-S : Save the spectrogram as an image file.

Esc : Close Spek.

Ctrl-E : Show the preferences dialog.

F1 : Open online manual in the browser.

Shift-F1 : Show the about dialog.

Spectrogram

c, C : Change the audio channel.

f, F : Change the DFT window function.

l, L (+Shift to reverse) : Change the lower limit of the dynamic range in dBFS.

p, P : Change the palette.

s, S : Change the audio stream.

u, U (+Shift to reverse) : Change the upper limit of the dynamic range in dBFS.

w, W : Change the DFT window size.

FILES

~/.config/spek/preferences : The configuration file for Spek, stored in a simple INI format.

AUTHORS

Alexander Kojevnikov alexander@kojevnikov.com. Other contributors are listed in the CREDITS.md file distributed with the source code.

DISTRIBUTION

The latest version of Spek may be downloaded from https://www.spek.cc.

Spek 0.8.5 - Released 2023-01-09

New Features And Enhancements

(this fork)

• Applied patches from 'patches' folder
• Exit on 'Esc'
• Store preferences in .ini file in .exe folder
• Bigger font and bigger window size, change window size using .ini
• Change upper limit in dBFS on pressing 'U' works
• Minimal ffmpeg version, .exe can be additionally shrinked to 5mb using UPX

(original)

New features since 0.8.2:

• Upgrade to FFmpeg 5.1
• Add 2 more palettes and change the default.
• Allow changing the DFT window size and function.
• Allow switching between audio streams and channels.
• Add translations for 14 additional languages.

Enhancements:

• Remove dependency on intltool.
• Fix FFmpeg build warnings.
• Detect AR tool.
• Use Homebrew for macOS dependencies.
• Improve test coverage.
• Use XDG_CONFIG_HOME on Unix systems.

Bugfixes:

• Remove association with .mod and MIDI files.
• Fix autoconf errors.
• Fix an AVX-related crash.

Sources / Packages

Spek 0.8.5 tarball:

• https://github.com/alexkay/spek/releases/download/v0.8.5/spek-0.8.5.tar.xz

Windows and Mac OS X binaries:

• https://github.com/alexkay/spek/releases/download/v0.8.2/spek-0.8.2.msi
• https://github.com/alexkay/spek/releases/download/v0.8.2/spek-0.8.2.zip
• https://github.com/alexkay/spek/releases/download/v0.8.2/spek-0.8.2.dmg

Unix packages:

• https://github.com/alexkay/spek/blob/master/INSTALL.md#bsd-and-gnulinux

Dependencies

• wxWidgets >= 3
• A recent version of FFmpeg