Electrical Engineering › Section W · Signal conversion and data transmission › Topic W.2
Digital signal processing
Once a signal is a stream of numbers, arithmetic can filter it, clean it, compress it and analyse it in ways analog circuits struggle to match. Digital signal processing is that arithmetic, and the digital signal processor is the chip built to do it in real time.
In this topic
- The digital signal processing chain
- Why process signals digitally
- The core operation: multiply and accumulate
- Worked example: a moving-average filter
- Real-time demands and data rates
- Worked example: a real-time budget
- Inside a digital signal processor
- Fixed point or floating point
- Where DSP is used
- Common mistakes to avoid
- Key takeaways
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