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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

  • 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!


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Audio — The Underused MM Asset

  • What uses??


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Audio — The Underused MM Asset

  • Analog or Digital

  • Analog

    • Means?

  • Digital

    • Means?


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Analog Audio

  • LPs

  • Cassette / reel / 8 track tapes

  • Advantages of each

  • Disadvantages of each


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Analog Audio

  • Advantages (LP, tape)

    • Familiarity

    • Availability (hardware)

    • Easy recording (tape)

    • Relative Durability (tape)

    • Transportability

    • Other?


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Analog Audio

  • Disadvantages

    • Quality

      • Initial

      • Dubs (tape)

    • Durability (especially LPs)

    • Format stability

      • Exception (so far) = cassette

    • Duration (playing time)

      • Remember changers?

    • ?


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Digital Audio

  • CDs

    • Advantages?

    • Disadvantages?

  • Computer sound files

    • Advantages?

    • Disadvantages?


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Digital Audio - CDs

  • Advantages of CDs

    • Quality

      • Original

      • Dubs

    • Create own combos

    • Playing time (max = ?? min)

    • Transportable

    • Durable


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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?


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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?


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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!


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DA Concepts - 1

  • Digital Audio File Types

  • +/- of Each Type

    • CDA

    • WAV

    • MP3 & WMA

    • AU / AIFF

    • MIDI

    • Proprietary

    • Others?


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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)


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Finding and Downloading Audio

The bounty of the Web


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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)


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DA Concepts - 2

Factors you control

  • Recording Volume

    • Too little = ?

    • Too much = ?

  • Audio file type

    • Choices vary by software


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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!


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DA Concepts - 4a

  • Hardware needs

    • “Card” standard; add mic, cables

  • Typical PCs

    • Internal

      • Optical drive wired to sound card


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DA Concepts – 4b

  • Hardware needs

    • “Card” standard; add mic, cables

  • Typical PCs

    • Interchangeable Card

    • Integrated


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DA Concepts – 4c

  • Hardware needs

    • “Card” standard; add mic, cables

  • iMac Example

  • G3 example


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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


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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


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Sound Recorder Demo

Mixer controls & problems Known? Multiple?

Record

Options that affect quality

Edit

Getting what you want

“Special effects”


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Music Match JukeboxDemo

For Producing Longer WAVs, MP3s, & Limited Format Conversion


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Sound ForgeDemo

For most flexibility and control


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SmartSoundDemo

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


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Inserting Audio into PowerPoint — Demo

Principle:

Everything in onesingle folder!


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