Please enable JavaScript.
Coggle requires JavaScript to display documents.
DATA REPRESENTATION (SOUND (Conversion (Analogue sound signals are…
DATA REPRESENTATION
SOUND
-
Sound sampling
-
-
The number of bits (audio bit depth) used to record each measurement is also known as the resolution.
More bits used per sample enables the height of the wave to be more accurately measured but increases file size
-
-
Available file formats
-
.FLAC or .M4A - lossless compression, slightly smaller files
.MP3 - lossy compression, much smaller files
IMAGES
-
Image resolution
-
-
The more pixels, the clearer the image
-
-
-
Colour or bit depth
The number of combinations (2n) dictates the bit depth and therefore the number of colours that can be represented
-
-
-
-
16 bits per pixel = 2 to the power of 16 = 65,536 colours
24 bits per pixel = 2 to the power of 24 = 16, 777, 216
-
COMPRESSION
LOSSY (JPG, GIF, MP3)
-
-
-
Suitable for images, sound and video
-
-
BENEFITS
-
-
Reduces downloads times of video, sound (including speech used for VOIP systems) and image files.
-