Edexcel GCSE Computer Science
3.2.3: understand how sound, an analogue signal, is represented in binary
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 |
