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S kills : audio compression

Audio compression. S kills : audio compression C oncepts : quality-file size trade off, capture-edit-compress, lossy versus lossless compression . This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. . Where does this topic fit?.

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S kills : audio compression

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  1. Audio compression Skills: audio compression Concepts: quality-file size trade off, capture-edit-compress, lossy versus lossless compression This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.

  2. Where does this topic fit? • Internet concepts • Applications • Technology • Implications • Internet skills • Application development • Content creation • User skills

  3. Audio processing work flow Record Edit Compress Distribute

  4. Which recording is not compressed? 1 2 3 4 5 6

  5. Which suits your application?

  6. Compressing with Audacity

  7. Quality rules of thumb

  8. All data types are compressible Image Numeric Audio Video Text

  9. Summary

  10. Self-study questions How many bytes in a three minute, CD quality song? How many bytes in a three minute telephone quality conversation? What is the final step before distribution in audio, image and video processing? If we do not lose information when doing lossless compression, what changed to reduce the size of the file? (Hint: see http://cis275topics.blogspot.com/2010/10/data-code-information.html).

  11. Resource Configure Audacity to export .mp3 files: http://cis275topics.blogspot.com/2011/03/configure-audacity-to-export-mp3-files.html Free software (reviews and links) for doing lossless compression: http://www.techsupportalert.com/best-free-file-archiver-zip-utility.htm

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