---
name: "spek"
section: "1"
platform: "linux"
package: "spek"
version: "0.8.5-4"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/spek"
---

# spek(1)

Acoustic Spectrum Analyser

## NAME

Spek - Acoustic Spectrum Analyser

## SYNOPSIS

`spek` \[*OPTION* *...*\] \[*FILE*\]

## DESCRIPTION

*Spek* generates a spectrogram for the input audio file.

## 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.

- **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**

  Change the lower limit of the dynamic range in dBFS.

- **p**, **P**

  Change the palette.

- **s**, **S**

  Change the audio stream.

- **u**, **U**

  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 LICENCE.md file distributed with the source code.

## DISTRIBUTION

The latest version of *Spek* may be downloaded from \<http://spek.cc\>.