Search found 17 matches

by trung05101
Mon Oct 28, 2013 3:21 pm
Forum: BioSemi all other topics
Topic: Research BCI online
Replies: 0
Views: 12643

Research BCI online

Dear all, I just graduated master of Biomedical Engineering. I used mean threshold and ARNN algorithms for Identification of eye commands in an EEG-controlled wheelchair. Now, I research to build BCI online and find place to do a PhD. Please share me information about scholarship or project to resea...
by trung05101
Wed Jun 20, 2012 5:34 pm
Forum: ECG/EMG data analysis
Topic: Drift votage
Replies: 1
Views: 16288

Drift votage

Hi all,
I use Active two to acquistion data, but some time it drift voltage data.
How to solve it?
I want filter data before store in BDF file? How to do this?
Thanks.
by trung05101
Fri Apr 06, 2012 12:24 pm
Forum: BioSemi all other topics
Topic: Drift signal
Replies: 0
Views: 6089

Drift signal

Hi all
I collect data. When I used high pass filter (no reference), the signal is good. But I don't chose high pass filter (no reference), the signal is drift.
How to solve it?
Thanks
by trung05101
Fri Apr 06, 2012 4:08 am
Forum: BioSemi all other topics
Topic: sample
Replies: 5
Views: 9793

Hi Coen and everyone !
I received data from TCP/IP, but when I decrease sample rate, the time to collect package increase. How to explain it?
Thanks.
by trung05101
Mon Apr 02, 2012 9:51 am
Forum: BioSemi all other topics
Topic: Filter
Replies: 1
Views: 6703

Filter

Hi all!
I use Cheb1 in Matlab to filter data eeg. But they are not like with data filter from Active Two. What kind filter in Active Two ?
Thanks.
by trung05101
Thu Mar 22, 2012 1:41 am
Forum: BioSemi all other topics
Topic: Read DBF
Replies: 4
Views: 12017

Thanks.
But I only downloaded ReadBDFChannel.m and ImportBDFHeader.m. I don't have funtion sopen and sread.
by trung05101
Tue Mar 20, 2012 2:49 pm
Forum: BioSemi all other topics
Topic: sample
Replies: 5
Views: 9793

Thanks Coen.
by trung05101
Tue Mar 20, 2012 2:18 pm
Forum: BioSemi all other topics
Topic: Read DBF
Replies: 4
Views: 12017

Read DBF

Hi all!
I downloaded MatLab code to read BioSemi BDF format data files. But I don't know how to use it. Example I want read channel 1, testdata.bdf.
Thanks.
by trung05101
Tue Mar 20, 2012 1:48 pm
Forum: BioSemi all other topics
Topic: sample
Replies: 5
Views: 9793

Thanks Coen.
What mean is TCP sample/channel 2 ?
I think a pakage have 192 bytes, they have 6 byte/channel (2 sample).
But when I receive data, I only receive 96 bytes/ 1 time. Is this true?
Thanks.
by trung05101
Tue Mar 20, 2012 5:07 am
Forum: BioSemi all other topics
Topic: sample
Replies: 5
Views: 9793

sample

Hi all!
I receive data by TCP/IP. Data have 32 channels, sample rate 256. Bytes sent by server: 192 bytes. TCP samples/channel: 2. How many samples (bytes)/channel in a second I will receive?
Please help me.
Thanks.
by trung05101
Tue Mar 13, 2012 3:44 am
Forum: BioSemi all other topics
Topic: Header
Replies: 2
Views: 6970

Thanks!
by trung05101
Thu Mar 08, 2012 5:25 am
Forum: BioSemi all other topics
Topic: Header
Replies: 2
Views: 6970

Header

Hi Coen and everyone!
I read data from server by TCP. This data have header?
I chose sample rate 256, 32 channel so byte in TCP array is 192.
But data alway negative, it isn't same on green.
Please help me.
by trung05101
Wed Mar 07, 2012 4:22 am
Forum: BioSemi all other topics
Topic: Convert value
Replies: 2
Views: 6784

Thanks1
by trung05101
Mon Mar 05, 2012 8:07 am
Forum: BioSemi all other topics
Topic: Convert value
Replies: 2
Views: 6784

Convert value

Hi all!
I use matlab read data from Active Two by TCP.
I use command: data = fread(t, 2, 'int32') (t is server).
Result data= 1.0e+009 *0.9121. If a change int32 by int16, result
data = -32457. I don't know what result is true and how to check it.
Thanks.
by trung05101
Wed Feb 22, 2012 7:46 pm
Forum: BioSemi all other topics
Topic: TCP
Replies: 1
Views: 5956

TCP

Hi everyone.
I want to receive data from TCP?
But I don't know TCP Active Two?
Please help me?
Thanks
by trung05101
Wed Feb 22, 2012 7:03 pm
Forum: BioSemi all other topics
Topic: How to build BCI online?
Replies: 2
Views: 7703

Thanks.
by trung05101
Tue Feb 21, 2012 9:31 am
Forum: BioSemi all other topics
Topic: How to build BCI online?
Replies: 2
Views: 7703

How to build BCI online?

hi everyone.
I have a Ative two system. I want to build BCI online, but I don't know what to do?
Please help me?