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12893240
Encoding audio and video
Descrição
Encoding audio and video
Sem etiquetas
encoding audio
encoding video
audio and video
sample rate
bit rate
bit depth
computing
year 11
Mapa Mental por
Leon Snailham
, atualizado more than 1 year ago
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Criado por
Leon Snailham
mais de 6 anos atrás
14
0
0
Resumo de Recurso
Encoding audio and video
Sounds created on a computer exist as digital information encoded as audio files
1. Microphone measures change in air pressure
2. Microphone translates air pressure into electrical voltage
3. Analogue to Digital Converter digitises the electrical voltage to bytes of information
4. Computer displays the digitised sound for manipulation
Sound input through a microphone is converted to digital for storage and manipulation
Digital sound is broken down into thousands of samples per second. Each sound sample is stored as binary data
Digital audio quality
sample rate - the number of audio samples captured every second
bit rate - the number of bits used per second of audio
bit depth - the number of bits available for each clip
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