Audio ► Analog or Digital ► Analog  Means?  Examples ► Digital  Means  Examples?

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Presentation transcript:

Audio ► Analog or Digital ► Analog  Means?  Examples ► Digital  Means  Examples?

Analog Audio ► LPs ► Cassette / reel / 8 track tapes ► Advantages of each   ► Disadvantages of each  

Analog Audio ► Advantages (LP, tape)  Familiarity  Availability (hardware)  Easy recording (tape)  Relative Durability (tape)  Transportability  Other?

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

Digital Audio ► CDs  Advantages?  Disadvantages? ► Computer sound files  Advantages?  Disadvantages?

Digital Audio ► Advantages of CDs  Quality ► Original ► Dubs  Playing time (max = xx min)  Transportable  Durable  Other?

Digital Audio ► Disadvantages of CDs  Playing time (capacity) ?  Dubbing requirements  Cost to buy commercial ► Are you being ripped off??  Other?

Digital Audio ► Advantages of Computer Sound  Editable  Distributable (files)  Convertible  Quality choices ► Affect file size ► Significance?  Other?

Digital Audio ► Disadvantages of Computer Sound  Lack of familiarity / experience  Play requires computer (or conversion to another format)  File size ► Can be huge!

DA Concepts - 1 ► Digital Audio File Types ► +/- of Each Type  CDA  WAV (std vs lower)  MP3 & WMA  AU / AIFF  MIDI  Others?

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

DA Concepts - 3 Factors you control ► Quality via Sampling Rate  CD = 44kHz  Radio (FM) = 22kHz  Telephone = 11kHz ► Quality via “Format” = Codec ► Quality via “Format” = Codec  Compression / decompression  Many possibilities within types  Experiment!

DA Concepts – 4a ► Hardware needs  “Card” standard; add mic, cables ► Typical PCs  Interchangeable Card  Integrated

DA Concepts – 4b ► Hardware needs  “Card” standard; add mic, cables ► iMac Example ► G3 example

DA Concepts - 5 ► Software to record / edit  Sound Recorder is standard (Win) ► Limitations  MusicMatch Jukebox  Sound Forge, et al. – more sophisticated ► Software / Hardware to create  SmartSound  MIDI ► DEMONSTRATIONS!

Streaming Media Resources ► Faculty Development  More than you’ll need to know  Audio via RealProducer, QT, etc. ► www3.niu.edu/facdev/media/presentations. htm www3.niu.edu/facdev/media/presentations. htm www3.niu.edu/facdev/media/presentations. htm

Sound Recorder Demo Mixer controls – often a problem Known? Multiple? Record Options that affect quality Edit Getting what you want “Special effects”

Music Match Jukebox Demo For Producing Longer WAVs, MP3s, & Some Limited Format Conversion

SmartSound Demo Can’t save in demo version

Inserting Audio Demo Principle: Everything in a single folder

Sample Web Resources ► wavcentral.com (Nice variety) wavcentral.com ► allwavs.com (some very BAD stuff, too) allwavs.com ► Multimedia sites from other units ► Search for audio files ► syntrillium.com syntrillium.com ► goldwave.com goldwave.com ► sonicfoundry.com sonicfoundry.com ► sonicdesktop.com sonicdesktop.com