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Why Microsoft cozied up to open source at OSCON
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convert(1) General Commands Manual convert(1) NAME
convert - convert an audio file SYNOPSIS
[source_file] [target_file] [] [] [] [] [] [] [] DESCRIPTION
This command converts audio files from one supported file format, data format, sampling rate, and number of channels to another. The unconverted file is retained as a source file. are the file formats for the source and destination files. Each format can be one of these: Sun file format NeXT file format Microsoft RIFF Waveform file format MuLaw format ALaw linear 16-bit format offset (unsigned) linear 8-bit format linear 8-bit format If you omit uses the header or filename extension in the source file. You can omit if you supply a filename extension for the des- tination file. is the data type for the destination files. data_type can be one of these: MuLaw ALaw linear 16-bit offset (unsigned) linear 8-bit data linear 8-bit data If you omit uses an appropriate data type, normally the data type of the source file. are the number of samples per second for the source and destination file. Typical sampling rates range from 8 to 11k (for voice quality) to 44,100 (for CD quality). You can use to indi- cate thousands. For example, means 8,000 samples per second. If you omit uses a rate defined by the source file header or its filename extension. For a raw file with no extension, 8,000 is used. By playing the file, you can determine if 8,000 samples is too fast or too slow. If you omit uses a sampling rate appropriate for the destination file format; if possible, it matches the sampling rate of the source file. are the number of channels in the source and destination files. Use for mono; for stereo. If is omitted, uses the information in the header; for raw data files, it uses mono. If is omitted, matches what was used for the source file (through the header or option); for raw data files, it uses mono. EXAMPLES
Convert a raw data file to a headered file. Convert a raw data file to a headered file when the source has no extension, was sampled at 11,025 per second, and has stereo data. To save disk space, convert an audio file with CD quality sound to voice quality sound. AUTHOR
was developed by HP. Sun is a trademark of Sun MicroSystems, Inc. NeXT is a trademark of NeXT Computers, Inc. Microsoft is a trademark of Microsoft Corporation. SEE ALSO
audio(5), asecure(1M), aserver(1M), attributes(1), send_sound(1). convert(1)
