Real-time EEG: timing and block size
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The document discusses the timing requirements for real-time EEG analysis, emphasizing the need for instantaneous processing and minimizing delays and jitter. It highlights the importance of data processing in blocks, with varying block sizes affecting jitter and overall performance. The text also explains the delay calculations associated with different block sizes and the trade-offs involved in processing EEG data efficiently.
Real-time EEG: timing and block size
- 3. Timing requirements • “realtime” analysis – instantaneous – very fast – well controlled
- 4. Timing requirements • “realtime” analysis – instantaneous – very fast – well controlled y = a*x + b
- 5. Timing requirements • “realtime” analysis – instantaneous – very fast – well controlled y = a*x + b T = delay + jitter T = complexity*datasize + jitter
- 6. Timing requirements • “realtime” analysis – instantaneous – very fast – well controlled • quantifying time – delay – jitter y = a*x + b T = delay + jitter T = complexity*datasize + jitter
- 8. Timing requirements • Minimizing delay – reduce data size – increase speed of algorithm – increase bandwith of transfer
- 9. Timing requirements • Minimizing delay – reduce data size – increase speed of algorithm – increase bandwith of transfer • Minimizing jitter – ?
- 26. Understanding jitter • data is processed in blocks everywhere – amplifier – usb port – network (tcp packet) – processing stream step 1 – processing stream step 2
- 27. Understanding jitter • data is processed in blocks everywhere – amplifier – usb port – network (tcp packet) – processing stream step 1 – processing stream step 2 • unequal block sizes cause jitter