Filter Plugin

sox.spectrogram

---
schema_version: 0.1
type: filter
identifier: spectrogram
title: spectrogram
version: 1
copyright: Copyright (C) 2003-2011 Ushodaya Enterprises Limited
license: LGPL
language: en
url: http://sox.sourceforge.net/
creator: Dan Dennedy
tags:
  - Audio
description: Process audio using a SoX effect.
bugs:
  - Some effects are stereo only, but MLT processes each channel separately.
  - Some effects have a temporal side-effect that do not work well.
parameters:
  - identifier: argument
    title: Options
    type: string
    format: |
            [options]
               -x num   X-axis size in pixels; default derived or 800
               -X num   X-axis pixels/second; default derived or 100
               -y num   Y-axis size in pixels (per channel); slow if not 1 + 2^n
               -Y num   Y-height total (i.e. not per channel); default 550
               -z num   Z-axis range in dB; default 120
               -Z num   Z-axis maximum in dBFS; default 0
               -q num   Z-axis quantisation (0 - 249); default 249
               -w name   Window: Hann (default), Hamming, Bartlett, Rectangular, Kaiser
               -W num   Window adjust parameter (-10 - 10); applies only to Kaiser
               -s   Slack overlap of windows
               -a   Suppress axis lines
               -l   Light background
               -m   Monochrome
               -h   High colour
               -p num   Permute colours (1 - 6); default 1
               -A   Alternative, inferior, fixed colour-set (for compatibility only)
               -t text   Title text
               -c text   Comment text
               -o text   Output file name; default `spectrogram.png'
               -d time   Audio duration to fit to X-axis; e.g. 1:00, 48
               -S time   Start the spectrogram at the given time through the input
...