Binary to Decimal Conversion
Decimal to Binary Conversion
Hexadecimal Conversions
ASCII - Character sets
Unicode - Character sets
Compression & Internet File Formats
Digitising Sound
Good notes will help you organise and process data and information
Sound is stored according to sample rates. The higher the sample rate, the better the quality, but the larger the file size.
The MP3 file format was designed to encode a raw audio file as a sequence of zeros and ones.
Click on the image below to find out about Sampling sound
Describe the differences between analogue and digital recordings. - [4 Marks]
An eight second file has been recorded with a sample rate of 10Hz and a sample resolution of 6 bits. How large will that file be in bytes? Show your working. - [3 Marks]
A microphone is left on for 20 hours recording MP3 audio files. If an MP3 uses 1MB in one minute, How large will that file be in Gigabytes? Show your working. - [4 Marks]
Lets look at the learning outcomes and decide which one best describes our current level of understanding :
Tick the one you feel is closest to your level
Rep. Sound in Binary