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Digital Audio Agenda

Digital Audio Agenda Digital Audio Concepts What’s it all about Creating Audio Equipment Demos and practice time Best way to learn = explore Guides on class web site! Audio — The Underused MM Asset What uses?? Audio — The Underused MM Asset Analog or Digital Analog Means? Digital

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Digital Audio Agenda

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  1. Digital Audio Agenda • Digital Audio Concepts • What’s it all about • Creating Audio • Equipment • Demos and practice time • Best way to learn = explore • Guides on class web site!

  2. Audio — The Underused MM Asset • What uses??

  3. Audio — The Underused MM Asset • Analog or Digital • Analog • Means? • Digital • Means?

  4. Analog Audio • LPs • Cassette / reel / 8 track tapes • Advantages of each • Disadvantages of each

  5. Analog Audio • Advantages (LP, tape) • Familiarity • Availability (hardware) • Easy recording (tape) • Relative Durability (tape) • Transportability • Other?

  6. Analog Audio • Disadvantages • Quality • Initial • Dubs (tape) • Durability (especially LPs) • Format stability • Exception (so far) = cassette • Duration (playing time) • Remember changers? • ?

  7. Digital Audio • CDs • Advantages? • Disadvantages? • Computer sound files • Advantages? • Disadvantages?

  8. Digital Audio - CDs • Advantages of CDs • Quality • Original • Dubs • Create own combos • Playing time (max = ?? min) • Transportable • Durable

  9. Digital Audio - CDs • Disadvantages of CDs • Playing time (capacity) ? • Dubbing requirements • Most newer PCs can • Special copiers unnecessary • Price of commercial • Are you being ripped off?? • Music downloads • Other?

  10. Digital Audio – Computer Files • Advantages of Computer Sound • Editable – use only what you need • Distributable (= files) • Convertible • Match format to application • Quality choices • Affect file size • Significance? • Other?

  11. Digital Audio – Computer Files • Disadvantages of Computer Sound • Lack of familiarity / experience • Play requires computer (or conversion to another format) • File size • Can be huge!

  12. DA Concepts - 1 • Digital Audio File Types • +/- of Each Type • CDA • WAV • MP3 & WMA • AU / AIFF • MIDI • Proprietary • Others?

  13. Digital Audio Files Types & their Characteristics • CDA • WAV (CD quality or less) • MP3 (= mpeg layer 3) • WMA • AU / AIFF • Proprietary • Streaming (Real, et al) • MIDI (totally different)

  14. Finding and Downloading Audio The bounty of the Web

  15. Sample Audio Resources • wavcentral.com (nice variety) • allwavs.com(some very BAD stuff, too) • The Daily Wav (movie & TV clips, some nasty) • Search for audio files (wav, mp3) Audio Software Companies • Adobe (Audition) • Goldwave (Goldwave) • Sony (Sound Forge) • Sonicdesktop (Smart Sound)

  16. DA Concepts - 2 Factors you control • Recording Volume • Too little = ? • Too much = ? • Audio file type • Choices vary by software

  17. DA Concepts - 3 Factors you control • Quality via Sampling Rate • CD = 44kHz (stereo) • Radio (FM) = 22kHz (stereo) • Telephone = 11kHz (mono) • Quality via “Format” = Codec  • Compression / decompression • Varying possibilities within types • Experiment!

  18. DA Concepts - 4a • Hardware needs • “Card” standard; add mic, cables • Typical PCs • Internal • Optical drive wired to sound card

  19. DA Concepts – 4b • Hardware needs • “Card” standard; add mic, cables • Typical PCs • Interchangeable Card • Integrated

  20. DA Concepts – 4c • Hardware needs • “Card” standard; add mic, cables • iMac Example • G3 example

  21. DA Concepts - 5 • Software to record / edit • Sound Recorder is standard (Win) • Limitations • Media Player (std, limits) • MusicMatch Jukebox (free) • Sound Forge, et al. • More sophisticated, flexible; buy • Software / Hardware to create • SmartSound (buy) • MIDI devices

  22. Setting Up to Record - Demo • Volume Control • System Tray icon? • Start > Programs > Accessories > Entertainment • Start > Programs > Multimedia in lab • Shows PLAYBACK only at first • Watch for “mute” checks • Options > Properties > Recording • Choose inputs to display • Select one to be used

  23. Sound Recorder Demo Mixer controls & problems Known? Multiple? Record Options that affect quality Edit Getting what you want “Special effects”

  24. Music Match JukeboxDemo For Producing Longer WAVs, MP3s, & Limited Format Conversion

  25. Sound ForgeDemo For most flexibility and control

  26. SmartSoundDemo Create your very own music for any need - no copyright issues

  27. Inserting Audio into PowerPoint — Demo Principle: Everything in onesingle folder!

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