![]() ![]() ![]() For example, digital telephony traditionally uses a sample rate of 8000 Hz (8 kHz) audio Compactĭiscs use 44100 Hz (44.1 kHz) Digital Audio Tape and many computer systems use 48 kHz professional audio systems typically use 96 or 192 kHz. The sample rate in samples per second ('Hertz' or 'Hz'). The following four characteristics are sufficient to describe the format of audio data such that it can be processed with SoX: The second type is 'headerless' (or 'raw data') here, the audio data characteristics must be described The characteristics of the audio data that follows. The first is 'self-describing' these formats include a header that completely describes Detailed explanations of how to use all SoX parameters, file formats, and effects can be found below in this manual, and in soxformat(7).įile Format Types There are two types of audio file format that SoX can work with. It detects audio is playing and stops after it sees 10 minutes of silence. Newfile : restartrecords a stream of audio such as LP/cassette and splits in to multiple audio files at points with 2 seconds of silence. Rec -M take1.aiff take1-dub.aiffrecords a new track in a multi-track recording. Rec -c 2 test.aiff trim 0 10records 10 seconds of stereo audio, and Play -n -c1 synth sin %-12 sin %-9 sin %-5 sin %-2 fade q 0.1 1 0.1plays a synthesised 'A minor seventh' chord with a pipe-organ sound, Play "The Moonbeams/Greatest/*.ogg" bass +3plays a collection of audio files whilst applying a bass boosting effect, Sox -m music.mp3 voice.wav mixed.flacmixes together two audio files. Sox slow.aiff fixed.aiff speed 1.027adjusts audio speed, 'headerless') audio to a self-descibing file format, Sox -r 8k -u -b 8 -c 1 voice-memo.raw voice-memo.wavconverts 'raw' (a.k.a. Sox -r 12k -b 8 -c 1 recital.wav vol 0.7 ditherperforms the same format translation, but also changes the audio sampling rate & sample size, down-mixes to mono, and applies the vol and Sox recital.wavtranslates an audio file in Sun AU format to a Microsoft WAV file, whilst To show how this works in practise, here is a selection of examples of how SoX might be used. The overall SoX processing chain can be summarised as follows: SoX is a command-line audio processing tool, particularly suited to making quick, simple edits and to batch processing. Those interested in extending SoX or using it in other programs should refer to the libSoX manual page: The heart of SoX is a library called libSoX. Additionally, the soxi(1) command provides a convenient way to just query audio file header information. Play the output file is automatically set to be the default sound device and if invoked as rec the default sound device is used as an input It also has limited ability to split the input in to multipleĪlmost all SoX functionality is available using just the sox command, however, to simplify playing and recording audio, if SoX is invoked as Introduction SoX reads and writes audio files in most popular formats and can optionally apply effects to them it can combine multiple input sources, synthesise audio,Īnd, on many systems, act as a general purpose audio player or a multi-track audio recorder. ![]()
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