Chapter 20 . Playing Music (Managed web hosting) and Video 523
Chapter 20 . Playing Music and Video 523 File Extension File Extension or Pseudonym Description or Pseudonym Description .prc Psion record.app format, .sf IRCAM sound files, newer than the WVE used by CSound format. package and MixView sample editor. .sph Speech audio SPHERE .smp SampleVision files (Speech Header from Turtle Beach, Resources) format from used to communicate NIST (National Institute with different MIDI of Standards and samplers. Technology). .sunau Pseudo file, used to .txw Yamaha TX-16W from open a /dev/audiofile a Yamaha sampling and set it to use the keyboard. data type being passed to SoX. .vms Used to compress .voc Sound Blaster VOC speech audio for voice file. mail and similar applications. .wav Microsoft WAV RIFF .wve 8-bit, a-law, 8 KHz files. This is the native sound files used with Microsoft Windows Psion Palmtop sound format. computers. .raw Raw files (contain no .ub, .sb, .uw, Raw files with set header information, so .sw, .ul, .al, characteristics. ub is sample rate, size, and .lu, .la, .sl unsigned byte; sb is style must be given). signed byte; uw is unsigned word; sw is signed word; and ul is ulaw. If you are not sure about the format of an audio file, you can add the .auto extension to the filename. This triggers SoX to guess what kind of audio format is contained in the file. The .auto extension can be used only for the input file. If SoX can figure out the content of the input file, it translates the contents to the sound type for the output file you request. In its most basic form, you can convert one file format (such as a WAV file) to another format (such as an AU file) as follows: $ sox file1.wav file1.au
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