file formats

Question 1

file formats:

Answer 1

a sounds file format is a recognised methodology for organising & compressing digitised sounds data bits & bytes into a data file. File structure must be known before data is saved or loaded into a computer & edited/played as a sound.

Question 2

JPEG (Joint Photographic Experts Group)

Answer 2

• uses LOSSY COMPRESSION –> compresses detail into shareable file size
• good for storing
• good for everyday use, supported by most web browsers
  NEGATIVES:
• quality can be lost

Question 3

MP3 (moving picture experts group layer 3)

Answer 3

• popular audio format
• is a data compression format for encoding digital audio
• was created to provide high quality, low-bitrate copy of sound files, i.e. cd tracks.

Question 4

MP4 (MPEG-4 Part 14)

Answer 4

• common format
• wide codec compatibility –> supports subtitles & metadata
• is LOSSY (efficient compression techniques)
• good choice for users & content creators