From: Jim Meissner (jpmeissner_at_mindspring.com)
Date: 2001-12-01 18:40:31
I got acceptable results using an 8 bit converter. If I had the choice nowI would go for 12 or 16 bits. Any kind of overload clipping such as eye blinks create a large number of frequency artifacts, and if the signal is ACcoupled there is a significant overload recovery time. The data is bad enough without introducing errors that you can control with a little more effort.
> like 5-10% of the signal is noise.
I wish that were true. It is more like 95% of the signal is noise.
Juergen P. (Jim) Meissner
Check out my Website at www.MeissnerResearch.com
Read about the benefits of the Brain State Synchronizer sounds for improving your life and health.
----- Original Message -----
From: jiva_at_humboldt1.com
To: buildcheapeeg_at_yahoogroups.com
Sent: Saturday, December 01, 2001 1:16 PM
Subject: [buildcheapeeg] Re: I published current design at SourceForge
>
> If we have a signal sampling frequency of 256Hz, and we require
> 12-bit data, then we need to represent 4096 possible voltage levels
I'm curious about the advantage of 12bit sampling when something
like 5-10% of the signal is noise.
Yahoo! Groups Sponsor
ADVERTISEMENT
To unsubscribe from this group, send an email to:
buildcheapeeg-unsubscribe_at_egroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:32 BST