tailieunhanh - Chapter 8: Digital Media

Sound cards are responsible for transforming bits stored in an audio file into music, sound effects, and narrations Digital signal processor | Digital Media Chapter 8 Chapter 8: Digital Media Chapter Contents Section A: Digital Sound Section B: Bitmap Graphics Section C: Vector Graphics Section D: Digital Video Section E: Digital Rights Management Chapter 8: Digital Media Digital Sound Digital Audio Basics Portable Audio Players MIDI Music Speech Recognition and Synthesis Chapter 8: Digital Media Digital Audio Basics Digital representation of sound Figure 8-1 Chapter 8: Digital Media Digital Audio Basics Sampling rate refers to number of times per second that a sound is measured Figure 8-2 Chapter 8: Digital Media Digital Audio Basics Sound cards are responsible for transforming bits stored in an audio file into music, sound effects, and narrations Digital signal processor Figure 8-3 Chapter 8: Digital Media Waveform Audio The most popular waveform audio formats include AAC, AIFF, MP3, RealAudio, Wave, and WMA Audio or media player software allows you to record and play . | Digital Media Chapter 8 Chapter 8: Digital Media Chapter Contents Section A: Digital Sound Section B: Bitmap Graphics Section C: Vector Graphics Section D: Digital Video Section E: Digital Rights Management Chapter 8: Digital Media Digital Sound Digital Audio Basics Portable Audio Players MIDI Music Speech Recognition and Synthesis Chapter 8: Digital Media Digital Audio Basics Digital representation of sound Figure 8-1 Chapter 8: Digital Media Digital Audio Basics Sampling rate refers to number of times per second that a sound is measured Figure 8-2 Chapter 8: Digital Media Digital Audio Basics Sound cards are responsible for transforming bits stored in an audio file into music, sound effects, and narrations Digital signal processor Figure 8-3 Chapter 8: Digital Media Waveform Audio The most popular waveform audio formats include AAC, AIFF, MP3, RealAudio, Wave, and WMA Audio or media player software allows you to record and play waveform audio files You can embed waveform files into a Web page Chapter 8: Digital Media Portable Audio Players Pocket-sized, battery-powered device that stores digital music Ipod, Zune Digital music is available from a wide variety of sources Formats include MP3, AAC, and WMA Figure 8-5 Chapter 8: Digital Media MIDI Music MIDI (Musical Instrument Digital Interface) specifies a standard way to store music data for synthesizers, electronic MIDI instruments, and computers MIDI-capable sound cards contain a wavetable Set of prerecorded musical instrument sounds Does not produce high-quality vocals Does not have full resonance of “real” sound Chapter 8: Digital Media Speech Recognition and Synthesis Speech synthesis is the process by which machines produce sound resembling spoken words Text-to-speech software Speech recognition refers to the ability of a machine to understand spoken words Speech recognition software Chapter 8: Digital Media Speech Recognition