1 / 12

Chapter 4

Chapter 4. Computers in Arts and Entertainment . Analog to Digital Conversion. Data: analog or digital Analog data is continuous wave patterns of sound and light Digital data is processed as bits (0s and 1s) Music: analog in to digital storage to analog out

teddy
Download Presentation

Chapter 4

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 4 Computers in Arts and Entertainment

  2. Analog to Digital Conversion • Data: analog or digital • Analog data is continuous wave patterns of sound and light • Digital data is processed as bits (0s and 1s) • Music: analog in to digital storage to analog out • An analog-to-digital converter (ADC) converts analog to digital • A digital signal processor (DSP) compresses the data • A digital-to-analog converter (DAC) converts the data back to analog for output

  3. Playing and Recording Music • Music can be created or performed using a synthesizer (creates sound from digital instructions) • The MIDI standard is used to represent music in digital form • A MIDI port connects the computer to an electronic instrument • The MIDI protocol is a series of messages that describe the action of a musical performance • Messages are saved in a MIDI file format • A sequencer is a program or device that records, processes, edits, and plays back MIDI data through a MIDI instrument or speaker

  4. Performing Music • Computer-controlled amplifiers and speakers output sound from instruments • Soundboard computers balance the sound and volume, and create special lighting and sound effects • Computer programs can help train performers (ex., Digital Conducting Feedback System)

  5. Dance • Dance notation software captures movement as a series of symbols to provide a guide for staging • Choreographers use animation software packages to plan the movements of dancers, ex., LifeForms • Dancers use motion capture to analyze their dance movements and create virtual partners Dancers wear sensors which transmit data to a base station • Dancers electronically document a dance fully for future staging, ex., DanceForms

  6. Sculpture and 3-D Media • Sculptors use CAD software to create a 3-D digital model to serve as a guide • 3-D scanning is used to scan an existing object and manipulate it with digital software • Uses a fine line of laser light across the surface • The Digital Michelangelo Project used a 3-D scanning system to archive the artist’s works • Computer numerically controlled (CNC) milling machines use the digital model as input to shape the desired medium • Telesculpture allows artists to collaborate on a work electronically

  7. Graphics Arts & Animation • Computers are used to create graphics in a process called rendering • Illustration software allows you to render art with a mouse or graphic tablet • Fractal art can be created with graphic software • A fractal is a geometric pattern repeated at ever smaller (or larger) scales • Computer-generated fractals uses mathematical formulas to create art

  8. Digital Photo Editing • Digital images can be edited with photo-editing software • Adjust contrast and brightness • Remove red-eye • Crop images • Remove or add elements • Add special effects • Remove blemishes and wrinkles • Ethical concerns have been raised about altering digital photos for news magazines and newspapers

  9. Digital Video Editing • Video editing software allows you to edit digital video • Automatically splits the video into smaller, more manageable scenes • Allows you to cut out, or prune, unwanted parts, edit individual scenes, and add titles or logos • Morphing is a special effect in which one image is transformed into another over several frames

  10. Digital Video Editing, 2 • Video composition is the process of integrating two or more elements into one complete scene • Used to integrate special effects • Can use a blue or green screen technique to film the subject (and digitally fill in the background later) • Audio effects can be added using video editing software • Finished scenes are combined into a complete video by adding transitional effects between scenes

  11. Digital Video Editing, 3 • Black-and-white movies can be colorized much faster with video editing software • The old film is scanned into the computer to create a digital version • A process called interpolation involves manually coloring key frames; the computer uses algorithms to determine colors for the other framesand automatically fills the colors in • The same ethical concerns arise with digital video as with digital photos

  12. Computer Animation • In 3-D animation, every object in a scene has to be sculpted in 3-D to form a wireframe model • Skin, hair, and other textures are mapped onto the wireframe • The software generates an image and adds final effects • The images are placed in an animation sequence • Key frame animation focuses on the key frames in an animation sequence • The animation software program computes the positions between the top and bottom of the sequence in a process called tweening

More Related