Re: [buildcheapeeg] Re: I published current design at SourceForge

From: Jim Meissner (jpmeissner_at_mindspring.com)
Date: 2001-12-02 18:25:34

Dear Jim Peters:

You are correct. I followed the HAL-4 format. The sampling rate is about 130 or 140 Hz. There is 60 Hz data there also, that will give you a way ofcalibrating. Have you tried running the exe file? The format would be "slink12r log001.dat". It seems to run out of the DOS prompt in Windows.

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: Jim Peters
To: buildcheapeeg_at_yahoogroups.com
Sent: Sunday, December 02, 2001 1:01 PM
Subject: Re: [buildcheapeeg] Re: I published current design at SourceForge

Jim Meissner wrote:
> I figured out (with some help) how to put the data on my website
> under Brain Wave Monitor. The DOS EXE file is there and some data.
>
> Look at LOG001.DAT. This has some simulated test frequencies. The
> source is 10 micro volts of 1-20 Hz sine wave test signal with some
> modulation and pulsing of the signal to demonstrate sidebands and
> other artifacts.
>
> The gifted medium's file name is called DOWNEY.DAT.
>
> Let me know if this works OK? OK?

The data seems to be in a format of 3-byte or 5-byte chunks, each
starting with an 0x03 byte, followed by 8-bit values for each channel,
with 0x80 for the zero volt position. Okay so far ? Do you have any
idea what the sampling frequency was ?

I can have a play with these, anyway.

Jim 

-- 
Jim Peters (_)/=\~/_(_) Uazú
(_) /=\ ~/_ (_)
jim@ (_) /=\ ~/_ (_) www.
uazu.net (_) ____ /=\ ____ ~/_ ____ (_) uazu.net

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This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:32 BST