Succeeding with Technology Digital Media for Work and Leisure Digital Music and Audio Digital Graphics Digital Photography and Video Interactive Media Please discontinue use of cell phone and turn off ringer Chapter 6

Succeeding with Technology Digital Media Digital Media encompasses digital technologies of all kinds that serve and support digital music, video, and graphics.

Succeeding with Technology 6.1 Digital Music and Audio Digital audio Digital music MIDI Podcast MP3 DRM Media player software Satellite Radio Key Terms

Succeeding with Technology Digital Audio and Music Digital audio is any type of sound, including voice, music, and sound effects, recorded and stored digitally as a series of 1s and 0s. Digital music is a subcategory of digital audio that involves recording and storing music.

Succeeding with Technology Digitizing Sound Digital Music File amplitude Milliseconds (ms) 1. An analog sound wave is… “sampled” at regular time slice, and stored as a sequence of numeric values… (30,-10,-28,-4,20,…) A sound wave is sampled at predefined time intervals (sampling rate) the amplitude for each sample is stored as a binary number. The sampling rate for audio CDs is 44,100 samples per second, whereas the sampling rate of your voice on a digital cell phone is 8000 times per second.

Succeeding with Technology Digital Sound For Professionals Digital Voice Recorders are used in many professions to capture dialogue for future reference. Digital audio is used in Science, Law Enforcement, Entertainment and Communications Digital audio techniques are used in speech and voice recognition.

Succeeding with Technology Digital Sound For Professionals Forensic audio uses digital processing to denoise, enhance, edit, and detect sounds to assist in criminal investigations.

Succeeding with Technology Digital Music & Sound Sound Production Studio Westlake Audio Studio in Hollywood, CA uses millions of dollars worth of digital audio equipment to produce music CDs, sound tracks for motion pictures, and many other audio services.

Succeeding with Technology Digital Music Production Tools A synthesizer electronically produces sounds designed to be similar to the sounds of real instruments; they can also produce new sounds unlike any that a traditional instrument could produce. A sampler digitally records real musical instrument sounds and allows them to be played back at various pitches using an electronic keyboard. A sequencer allows musicians to create multitrack recordings with a minimal investment in equipment.

Succeeding with Technology MIDI The musical instrument digital interface (MIDI) protocol provides a standard language for digital music devices to use in communicating with each other.

Succeeding with Technology Podcasting A podcast is an MP3 audio file that contains a recorded broadcast distributed over the Internet. A podcast aggregator is software that allows you to subscribe to podcasts. Record your own podcasts: 222_recording_a_podcast.html Windows: Mac:

Succeeding with Technology Discussion: Mainstream Media vs. Consumer Generated Media A blogger interview also see Dan Rather on PROS & CONS

Succeeding with Technology Digital Audio File Formats File Extension FormatDescription.aac.m4p Advanced Audio Coding Apple compressed audio file format. A new compressed file format that is more efficient than MP3. Used with Apple’s iTunes music service..auAudioAudio file format used mostly on Unix and Apple operating systems..cdaCompact Disc Audio Used to store music on traditional music CDs using a storage technology different from typical computer files..midMIDIFile format containing MIDI commands to control keyboard synthesizers and other electronic instruments..mp3MP3A popular compressed audio file format used on file sharing networks and the Internet. Compresses.cda files by a factor of AudioFormat designed for streaming audio over the Web..wavWaveform AudioWindows PC audio file format..wmaWindows Media Audio Microsoft Windows compressed audio file format. A new compressed file format that is more efficient than MP3 and provides the distributor with control over copying of the file. Used with most Internet music services other than Apple iTunes. Town.mid

Succeeding with Technology Digital Music Media CDs, CD-Rs, CD-RWs, Mini-disks Flash Memory Hard Drive Creative's Sound Blaster Wireless Music (listed at $250) is the first digital media receiver to offer music-file navigation via a remote control with a large LCD. The idea is that once you've configured the small, modem-size base unit to work with your Wi-Fi network, you'll be able to stream music over the system to any stereo or even a set of powered speakers.

Succeeding with Technology Players and Software Media player software such as iTunes, Windows Media Player, and RealPlayer, allows users to organize and play digital music, audio, and video files on PCs and media devices.

Succeeding with Technology Digital Music Distribution Channels Purchase new on CD Internet music services  Per-song  Monthly Subsciption Satellite Radio Illegal methods  File sharing networks  Copying CDs $9.99 pm $12.95 pm $14.95 pm or 99 cents 99 cents

Succeeding with Technology Digital Rights Management (DRM) DRM provides a way to control if and how many times a digital music file can be copied.  Fairplay: Apple’s DRM technology used in m4p files.  Janus: Microsoft’s DRM technology used in wma files (wma-drm 9.0).  Zune wma-drm 9.1: Microsofts new DRM for Zune not compatible with Janus.

Succeeding with Technology Online Music Distribution Wma drm 9.0 Online Stores  AOL Music Now  Yahoo! Music Unlimited  Musicmatch  Napster  Rhapsody To Go  Ruckus  Sony Music Store  URGE  Virgin Digital  Tesco Downloads M4P Stores  iTunes No DRM Stores –Amazon –eMusic.com –iTunes Plus The public’s reaction to DRM… Wma drm 9.1 Stores –Zune

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Audio File Formats & Players wavaiffmp3aac (m4a) aac (m4p) wmawma (drm 9.0) wma (drm 9.1) iPodXXXXX ZenXX XX ZuneXXXX

Succeeding with Technology 6.2 Digital Graphics Digital graphics Pixels Bit-mapped graphics Vector graphics Scientific visualization CAD 3D Modeling Software Key Terms

Succeeding with Technology Digital Graphics Digital graphics refers to computer-based media applications that support creating, editing, and viewing 2D and 3D images and animation.

Succeeding with Technology Digitizing Graphics Digital images are made up of a grid of small points called pixels (short for picture element).

Succeeding with Technology Digitizing Graphics Colors for pixels are expressed using numbers that represent combinations of intensities of red, blue, and green, with one byte (256 levels of intensity) for each. Using three bytes provides 16,777,216 (2 24 ) possible colors. How many bits does your PC use for color? Check your display properties. Demo tool:

Succeeding with Technology Vector graphics files store geometric descriptions that define all the shapes in the image. Graphics File Formats Bit-mapped graphics files store the color of each pixel in the image.

Succeeding with Technology Uses of Digital Graphics Creative Expression Presenting Information Communicating Ideas Exploring New Ideas  Scientific visualization uses computer graphics to provide visual representations that improve our understanding of some phenomenon. Electrons in a nanotube

Succeeding with Technology Uses of Digital Graphics Entertainment Documenting Life Designing Real-World Objects  Computer-assisted design (CAD) software assists designers, engineers, and architects in designing three-dimensional objects.

Succeeding with Technology Vector Graphics Software Vector Graphics Software, or drawing software, provides tools to create, arrange, and layer graphical objects on the screen to create pictures.

Succeeding with Technology 3D Modeling Software 3D Modeling Software provides graphics tools that allow artists to create pictures of realistic 3D models.  Objects are created using a wire framework.  Surface textures are applied to the objects.  Light source is defined.  The scene is rendered – lighting, shapes, and surfaces are calculated to create a 3D appearance on a 2D display.

Succeeding with Technology 3-D Modeling Software 3D Modeling is sometimes referred to as Ray Tracing.

Succeeding with Technology Real or computer generated?

Succeeding with Technology Real or computer generated?

Succeeding with Technology Computer Animation 2D Animation  Animated GIFs  Macromedia Flash Macromedia Flash 3D Animation  Involves rendering 24 3D images per second.  Expensive Software  Avars are used to provide hinges for movements of characters. 

Succeeding with Technology Defines avar for blinking eyelid.

Succeeding with Technology Digital Animation Software Softimage/XSI v3.0 $13, ds + Reactor = $1, Lightwave 3D, $1, Renderman $ 5, Check links for cool demos.

Succeeding with Technology 6.3 Digital Photography and Video Photo-editing Software Video-editing Software Key Terms

Succeeding with Technology Digital Photography Digital photos are created, or acquired, using a digital camera or scanner and are saved as bit- mapped images.

Succeeding with Technology Photo Editing Photo-editing software, such as Adobe Photoshop Elements and Microsoft Picture It!, includes special tools and effects that you can use to improve or manipulate bit-mapped photograph images.

Succeeding with Technology Today’s technology makes it easy to create realistic looking faked photos – thus photos are no longer trusted as evidence in court.

Succeeding with Technology Valuable Viewing, Sharing, and Printing Services

Succeeding with Technology Digital Video Digital video cameras, called digital camcorders, are available in a wide range of prices with wide-ranging capabilities. Camcorder Buying Guide

Succeeding with Technology Video Editing Video-editing software allows professional and amateur videographers to edit bad footage out and rearrange the good footage to produce a professional-style video production. Video editing storyline

Succeeding with Technology Portable Digital Video Hardware Portable Media Player (PMP)

Succeeding with Technology 6.4 Interactive Media Interactive media Video game consoles Interactive TV Key Terms

Succeeding with Technology Interactive Media Interactive media refers to digital media presentations that involve user interaction for education, training, or entertainment.

Succeeding with Technology Interactive Media in Education Authorware provides a toolkit for creating interactive 2-D tutorials and training for delivery on computer. Software like “Making History” is used to enhance education.

Succeeding with Technology Interactive Media in E-commerce

Succeeding with Technology Game Consoles Video game consoles, such as the Nintendo Wii, the Sony Playstation 3 (PS3), and Microsoft’s Xbox 360, are high-powered multiprocessor computers designed to support 3D interactive multimedia.

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Portable Gaming Hardware PlayStation Portable Nintendo DS

Succeeding with Technology Interactive TV Interactive TV is a digital television service that includes one or more of the following:  Video on demand  Personal video recorder  T-Commerce  Internet access on TV  Video games over TV

Succeeding with Technology Chapter 6 Questions? Don’t forget to turn your phone on!!