Lesson 3 second year fourth quarter s

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Lesson 3 second year fourth quarter s

  1. 1. HARDWARE REQUIREMENTS FOR AUDIO Computer Components
  2. 2. PROCESSOR • Pentium 133 or a Power PC Mac – the minimum for acceptable performance for playing MP3s. • The higher the processor, the better the performance and quality of sound can be achieved.
  3. 3. MEMORY • The more RAM (Random Access Memory), the better. • But when the RAM is full, the computer uses the hard disk to handle the overflow.
  4. 4. HARD DISKS • The larger and faster the hard disk, the better. • It is needed for ripping, encoding and editing sound files.
  5. 5. CD DRIVES  CD-ROM  CD-R  CD-RW  Drive performance
  6. 6. CD – ROM (CD DRIVES) • Stands for Compact Disc-Read Only Memory • They can only read information not write.
  7. 7. CD-R (CD DRIVES)  Stands for Compact Disc-Recordable  It can record information but one can not erase or edit the information
  8. 8. CD-RW (CD DRIVES)  Stands for Compact Disc-ReWritable  It can write and later erase or rewrite the information.
  9. 9. DRIVE PERFORMANCE (CD DRIVES)  CD-ROM drives are usually labelled to as 12X, 16X or some other X value.  The X value refers to the data transfer rate relative to 150KB/sec 1x.
  10. 10. DVD DRIVES Also known as DigitalVideo Disc. It has several types, the single- layer DVD media with memory up to 4.7 GB on a storage disc while the dual-layer or double-layer DVD media can pack up to 8.5 on a single disc
  11. 11. DVD DRIVES (DRIVE PERFOMANCES)  Currently, the fastest write speed is 20X for recording on a single-layer DVD-R and DVD+R media.  Double-layer DVD+R and dual-layer DVD-R media write speeds are currently at 8X.
  12. 12. CONNECTORS  IDE  SCSI  Parallel  USB
  13. 13. IDE (CONNECTORS)  Stand for Integrated Drive Electronics  This means that the controller circuitry is on the drive rather than on a separate card  ATAPI (ATAttachment Packet Interface) is the protocol that is used to communicate with non-hard drive IDE devices like CD-ROMs
  14. 14. SCSI (CONNECTORS)  Stands for Small Computer Systems Interface  Gives faster connection throughout and reduces the load on the computer’s processor.  Plextor models will rip reliably maximum speed  Standard SCSI supports up to seven devices on the same channel.
  15. 15. PARALLEL (CONNECTORS) Some external drives can sometimes be based on SCSI but are usually limited to just one device. They use parallel interface so that there can be two or more connections but only one at a time.
  16. 16. USB (CONNECTORS) Stands for Universal Serial Bus General purpose interface designed to overcome the limitations of serial and parallel interfaces.
  17. 17. SOUND CARDS Most overlooked devices in computer audio. It handles analog to digital (A/D) and digital to analog (D/A) conversion, mixing, music synthesizing, sound effects, and amplification.
  18. 18. STORAGE DEVICES  Floppy Disks  CDs  DVDs  MP3 players  Thumb Drives
  19. 19. FLOPPY DISKS STORAGE DEVICES It is a data storage medium that is composed of a disk of thin, flexible (“floppy”) magnetic storage medium encased in a square or rectangular plastic shell. It can handle data up to 1.44MB
  20. 20. CDS STORAGE DEVICES Officially known as the Compact Disc DigitalAudio or CD-DA It remains the standard physical medium for the sale of commercial audio recordings to the present day.
  21. 21. DVDS STORAGE DEVICES  DVD-Audio (Commonly abbreviated as DVD-A) is a digital format for delivering very high-fidelity audio content on a DVD  An advantage of using a DVD-Audio disc is that users may optionally employ a copy protection mechanism called Content Protection for Pre-recorded Media (CPPM)  This prevents users from extracting audio to computers and portable media players.
  22. 22. MP3 PLAYERS STORAGE DEVICES Digital audio player, more commonly referred to as an MP3 player, is an electronic device that stores, organizes and plays audio files from 32GB up to 250GB.
  23. 23. THUMB DRIVES STORAGE DEVICES Known as portable data storage Characterized as small, handy and about the size of a human thumb
  24. 24. SPEAKERS AND HEADPHONES These are essential for listening to sound recordings
  25. 25. MICROPHONES The importance of selecting the right kind of microphone is often overlooked by ICT technicians.
  26. 26. TWOTYPES OF MICROPHONES  Dynamic Microphone (also known as a Karaoke microphone)  Works with most sound cards.  Condenser Microphone (also known as a powered microphone)  Only works with sound cards that can provide power to the microphone.
  27. 27. TWOTYPES OF MICROPHONES Dynamic Microphone Dynamic Microphones  Moving coil with magnet (like a speaker)  Requires no power  Generally more rugged than condenser microphones (except for ribbon mics)  Generally not as sensitive as condenser microphones  Generally not as flat as condenser microphones Condenser Microphone Condenser (Electret) Microphone  Moving diaphragm only (no coil to move)  Flatter than dynamic microphones  More sensitive than dynamic microphones  Requires power source  Traditional microphones require high-voltage power supplies (9 volts)  Modern electric microphones require only battery (or phantom)  Not as rugged as dynamic microphones

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