# 4 Signals and signal processing

The last section in this course focuses on signals, in particular sound signals. You will investigate how sounds can be recorded, analysed and reproduced. By the end of the section, you will return to the op-amp and see how it can be used to amplify a sound or other signal.

OpenLearn - An introduction to electronics
Except for third party materials and otherwise, this content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence, full copyright detail can be found in the acknowledgements section. Please see full copyright statement for details.