1. Sound: Audio & Music B.Sc. (Hons) Multimedia ComputingMedia Technologies

2. Agenda History and overview of computer-based sound Digitised Sound Synthesised Sound Sound Formats Sound for Multimedia Software Sound Editors Sound Sequencers B.Sc. (Hons) Multimedia ComputingMedia Technologies

3. Overview B.Sc. (Hons) Multimedia ComputingMedia Technologies Computer sounds can be digital or synthesised Digital sound is referred to as Audio Synthesised sound is referred to as Music Digital sounds are recordings of real sounds Synthesized sounds are programmed reproductions of sounds based on algorithms and hardware tone generators.

4. Digitized Sound B.Sc. (Hons) Multimedia ComputingMedia Technologies Digital sound involves digitization, which means to encode data in the form of ones and zeros. The computer converts an analogue data source to a digital data stream with an analog- to-digital converter. These converters are devices that exist on the computers sound cards/modules, and are controlled by the software you use to process the sound, SoundForge on the PC, Sound Edit on the MAC, for example.

5. Synthesized Sound and MIDI B.Sc. (Hons) Multimedia ComputingMedia Technologies MIDI = Musical Instrument Digital Interface Synthesized sound isn't digitally recorded; its a mathematical reproduction of a sound based on a description. Synthesizers use hardware and algorithms to generate sounds on-the-fly from a description of the desired sound.

6. Sound Formats B.Sc. (Hons) Multimedia ComputingMedia Technologies Audio.WAV (Developed by IBM and Microsoft).AU.AIFF (Audio Interchange File Format).MP3 (MPEG).SND (Mac) Music.MID (Musical Instrument Digital Interface) and other proprietary formats

7. Sound for Multimedia B.Sc. (Hons) Multimedia ComputingMedia Technologies Generate sounds for multimedia scenarios including: Sound effects Ambient sound for mood and effect Virtual Juke Box Voice-over

8. Software: Sound Editors B.Sc. (Hons) Multimedia ComputingMedia Technologies Sound Editors - edit wave forms of digitised sounds Trim Apply effects - e.g. reverb, echo, equalisation (EQ) Insert silence Fade-in, fade-out Combine sounds Adjust volume (gain)

9. Software: Sound Sequencers B.Sc. (Hons) Multimedia ComputingMedia Technologies Synthesized sounds played back via pre- recorded or live MIDI note event data - velocity, pitch, etc. Sound cards may also have prerecorded digital samples stored on them. These 'samples' can then be played by sequencing software that will play a number of tracks simultaneously in an ensemble. Software such as Cakewalk, Steingerg's Cubasis, and eMagic's Logic Audio.

10. B.Sc. (Hons) Multimedia ComputingMedia Technologies

11. B.Sc. (Hons) Multimedia ComputingMedia Technologies