Command line tool for analyzing audio frequency

audiocommand linestreaming

I am planning to analyze audio via linux command line.
There are a lot of analyzers out there which have a graphical interface, but since I want to make an automated input/output of this information I can't use a GUI.

The optimal case would be to send an audiostream from an embedded device to powerful machine, which analyzes the audio and then generates a csv or db entries with the data and builds some graphs out of it for a website.

If there so no such thing for audiostreams, an analyzer for audiofiles will also be a great step forward.

Best Answer

Command-line batch audio processing tools are sox(http://sox.sourceforge.net/) and ecasound(http://www.eca.cx/ecasound/). You may want to check man soxformat for the list of supported formats (i.e. streaming and file formats). It may be also beneficial to consider including ffmpeg(see http://ffmpeg.org/ffmpeg-all.html) into the toolchain for conversion from some of the exotic codecs into mainstream formats.

Related Solutions

Command-Line – Robust Tools for Processing CSV Files

You can use Python's csv module.

A simple example:

import csv
reader = csv.reader(open("test.csv", "r"))
for row in reader:
    for col in row:
        print col

Good command line tool for converting to and from FLAC audio format

The fundamental tool for sound format conversions and simple transformations is SoX, the Swiss Army knife of sound-processing programs.

sox foo.mp3 foo.flac

If you're running Debian, support for writing MP3 in sox is broken in lenny and squeeze (and as far as I know the same problem affects Ubuntu 10.04 and 10.10). This bug was fixed in early March 2011, so grabbing the latest source (or grabbing a binary for sox 14.3.1-1build1 or newer) and recompiling it should work.

An alternative for encoding to .mp3 is lame. It doesn't read .flac, but you can use sox or flac to convert from .flac to .wav and then lame from .wav to .mp3.

flac -d foo.flac -c | lame - foo.mp3

Best Answer

Related Solutions

Command-Line – Robust Tools for Processing CSV Files

Good command line tool for converting to and from FLAC audio format

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