A marine research vessel uses an array of underwater hydrophones to record whale vocalisations. The audio is captured as uncompressed digital sound.
State an algebraic expression to calculate the total raw data size, in bits, of a recording that has c c\,c independent audio channels, a sample rate of s Hzs\text{ Hz}s Hz, a bit depth of d bitsd\text{ bits}d bits, and a duration of t secondst\text{ seconds}t seconds.
Practise Edexcel GCSE Computer Science Data representation with exam-style questions for GCSE Computer Science. 50 questions covering Encoding characters with 7-bit ASCII, Representing bitmap images in binary, Representing analogue sound in binary, and Limitations of binary representation, matched to the Edexcel GCSE Computer Science (1CP2) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.