3.2.3: understand how sound, an analogue signal, is represented in binary
Keyword | Definition |
---|---|
amplitude | how high or low a sound wave is, which can indicate the volume of a sound when it's at its highest or lowest |
analogue | a type of signal that is continuous: a never ending amount of detail |
digital | a type of signal that is represented as binary bits |
digitise | the process of turning an analogue signal into digital samples |
resolution | the number of bits used to store each sample. |
sample | a measure of the amplitude of a sound at a given point in time |
sampling frequency | the number of samples recorded every second. 1KHz is 1000Hz which is 1000 samples every second |
sound | an analogue signal caused by vibrations that humans hear as noises, speech and music |