DSP to DSP SynchronizerHi! I am working on implementing a DSP to DSP synchronizer on the
TMS320C6701 using 16-QAM. I have already built and implemented the
transmitter but I am running late on time and having troubles with the
receiver. Can anyone help me out with algorithm, code, or material please?
Thank you very much in advance.
"Texas Longhorns" <OUSucks@hotmail.com> writes:
> Hi! I am working on implementing a DSP to DSP synchronizer on the
> TMS320C6701 using 16-QAM. I have already built and implemented the
> transmitter but I am running late on time and having troubles with
>...
DSP to DSP SynchronizerHi! I am working on implementing a DSP to DSP synchronizer on the
TMS320C6701 using 16-QAM. I have already built and implemented the
transmitter but I am running late on time and having troubles with the
receiver. Can anyone help me out with algorithm, code, or material please?
Thank you very much in advance.
...
/dev/dsp and /dev/video over networkI have a Mandrake 9.1 machine used for videocasting. I need to *also*
get video and audio from another building via Lan to be encoded by
Darkice or Helix Producer.
I am sending many streams at once so getting two computers that are as
powerful is an expensive option. Better to have one machine with mucho
CPU and another that just relays audio & video from the other building
to it.
Is there any way to get the /dev/dsp and /dev/video of one machine to
be accessable to the other? Mandrake uses devfs.
Regards,
Fred.
Fred Phase wrote:
> I have a Mandrake 9.1 machine used for videocastin...
Dsp and Dsp programble nameHi i want to DSP name and dsp programble neam to work on it by matlab
and also i want to ask if i want' any programe more than matlab or matlab is enouth for me to create every thing
thanks
"mahmoud " <alrazyreturn@live.com> wrote in message <iahfc9$dho$1@fred.mathworks.com>...
> Hi i want to DSP name and dsp programble neam to work on it by matlab
> and also i want to ask if i want' any programe more than matlab or matlab is enouth for me to create every thing
> thanks
Hi Mahmoud, Can you please try and rewrite your post. It is clear to...
DSP t DSP SynchronizationWhat would be the easiest way to synchronize two DSPs using the TI 'C6701
programmable digital signal processor. Would it be easier to send a sinusoid
from the transmitter end to the receiver and aknowledgement from the
receiver to the transmitter or use a stream of known bits?
Any help with algorithm, code or ideas would be appreciated.
Thank you.
I solved the same problem. Sinusoid did help but I used 5/6 frames for
synchronization. Like Sinusoid+silence+silence+sinusoid+.. You can
also use the more robust technique of known bits but it will increase
ur processing during listening...
DspTo do well dsp what areas of math I must know well, and also what dsp
starter kit for learning you would recommend me?
Dave
Dave wrote:
> To do well dsp what areas of math I must know well, and also what dsp
> starter kit for learning you would recommend me?
>
> Dave
>
Try this page:
www.dspguru.com
And check out the beginner books section. Rick Lyons' book is an
excellent place to start.
R
I recommend following
Math area: Probability , statistics, random theory
DSP kit: ADSP 2181, SHARC, TMS 320C54xx
ArunKumar
"Dave" <davecle@SoftHome.net> wr...
DSPPlease Give me outline of doing a project of dsp processor design.
On 21 Feb 2006 02:45:18 -0800, "SaHiD" <sahi.cse@gmail.com> wrote:
>Please Give me outline of doing a project of dsp processor design.
1) Pick an application that needs DSP. i.e. Radar with beam forming
2) Write a project specification. i.e. 500 page MS-Word document
3) Extract the DSP part of the project. i.e. Do beam forming
4) Select a DSP chip. i.e. TMS320CV5416 from Texas Instruments
5) Download the free eval version of their software
6) Do the project
7) Learn to write newsgroup posts with suff...
RISC/DSP embedded Linux dev kit targets "PDT" apps
http://www.linuxdevices.com/news/NS6564012489.html
...
Permissions on /dev/dsp, /dev/mixer resettingThe current permissions on my sound devices are:
$ ls -l dsp* mixer*
crw------- 1 root root 14, 3 Jan 30 2003 dsp
crw------- 1 root root 14, 19 Jan 30 2003 dsp1
crw------- 1 root root 14, 0 Jan 30 2003 mixer
crw------- 1 root root 14, 16 Jan 30 2003 mixer1
I then change them with:
$ chmod 666 dsp dsp1 mixer mixer1
$ ls -l dsp* mixer*
crw-rw-rw- 1 root root 14, 3 Jan 30 2003 dsp
crw-rw-rw- 1 root root 14, 19 Jan 30 2003 dsp1
crw------- 1 root root 55, 0 Jan 30 2003 dsp56k
crw-rw-r...
DSP Group TeakLite DSP Board
I've pulled a DSP Group Teak Lite DSP development board out of the bin
at work. It's about 3-4 years old.
Their web site asks you to login before you can look at docs an
support S/W etc.
Does anyone have an old support login for this site?
Cheers,
Alfie.
...
DSP using a non DSP processorMy requirement is to use a moderate controller (Non DSP) and take
analog sinusoidal signals (half second cycle 50 hz) , take their
samples, do a Fourier transform to remove harmonics and then multiply
them to find instantaneous power. Then do a Low Power Filtering
operation on this power signal.
Is it possible? has anyone implemented anything similar or am I being
too ambitious?
please post your comments about its feasibility.
Thanks,
Rohan
Rohan wrote:
> My requirement is to use a moderate controller (Non DSP) and take
> analog sinusoidal signals (half second cycle 50 hz) , take the...
Which DSP vendor has the best DSP architecture and why?There are 4 major supplier of general purpose DSPs; Agere, TI, Analog
Devices and Motorola. Which DSP vendor has the best DSP
architecture(s), DSPs, tools, support and why?
Thanks.........dp
On 19 Dec 2003 19:25:35 -0800, petkevich@yahoo.com (dp) wrote:
>There are 4 major supplier of general purpose DSPs; Agere, TI, Analog
>Devices and Motorola. Which DSP vendor has the best DSP
>architecture(s), DSPs, tools, support and why?
>
>Thanks.........dp
Your question tickled me.
It's like asking, "Who makes the best
gasoline-powered vehicle, who has the
best maintenan...
DSP parts with free dev software/cheap dev tools?Hi - I'm looking at doing some DSP work (specifically, I'm working on
an AHARS system).
I've never worked with a DSP - but I understand them to essentially be
a microcontroller with especially strong math abilities. Thus this
seems like a perfect solution to my needs.
Problem is - it seems most all DSPs require expensive dev software and
hardware. I'm coming from the ARM and AVR world where software is free
and programmers are inexpensive. Being a student - this transition is a
bit unpleasant.
Are there any inexpensive routs into the DSP world? I'm looking for a C
compil...
xpc target and dsphi
Is it possiple to implement the dsp processer into thhe xPC target if i am having the cc studio setup on the host side & it is possible to built the simulink model which contain the dsp processer
is this above interfacing is possiple with xpc target ?
regards
ramana
...
/dev/dsp-no such devicehello,
I've got a problem with sound.When I run sound apps I get info"Sound server
informational message:
Error while initializing the sound driver:
device /dev/dsp can't be opened (No such device)
The sound server will continue, using the null output device".
What's problem and how to resolve this????
Thx for all
Bemol wrote:
> hello,
> I've got a problem with sound.When I run sound apps I get info"Sound server
> informational message:
> Error while initializing the sound driver:
> device /dev/dsp can't be opened (No such device)
> The sou...
Permissions in /dev/dspI have had problems on and off over the years with audio on Linux, but
always hacked through it and made it work. Now I am trying to understand
it.
Now is the chance. I have two identical hardware systems with (supposedly)
identical loads of Debian Sarge 3.1. Sound works just fine on one, but on
the other when KDE loads it gets a "Device /dev/dsp can't be opened.
Permission denied." And the error is correct because if I start a
program needing sound (totem, XMMS) as su/root it works. So, I have a
permission problem.
Looking at the /dev/dsp on the working system I get...
crw-rw---- 1 root audio 14, 3 2006-07-22 19:00 dsp
On the non sound working box it is...
crw-rw---- 1 root root, 3 2006-07-22 19:00 dsp
So, the sound works with a group permission of audio 14, but only works as
root with a group permission of root. But I don't see a group called
audio 14 anywhere in my user/group utilities. In fact, I haven't been able
to grep up a string of "audio 14" anywhere on the system. I have googled
up lots of suggestions for a fix, but few if any have explanations.
So, can anyone tell me what should have setup the "audio 14" group?
Thanks
Jim Phillips <JPxxxxx@yahoo.com> writes:
>I have had problems on and off over the years with audio on Linux, but
>always hacked through it and made it work. Now I am trying to understand
>it.
>Now is the chance. I have two identica...
/dev/dsp linuxCan someone point me to some documentation on how to
use the /dev/dsp device under linux?
I understand that files sent to this device is digial
and will be converted to analog in the soundcard.
And am I correct that music encoded with MP3, OGG, and
similar, are decoded to the same "format" which can
be sent to the soundcard?
I wonder if I in a C program can write a music tune,
in an array or something, containing frequencies that
will be converted to analog in the soundcard.
On Fri, 28 Apr 2006 23:04:59 GMT, edware <erixk@hotmail.com> wrote:
> Can someone point me to some ...
difference between CPU and DSPThe features of DSP:
Harvard architecture
hardware multiplier
SIMD instruction
special addressing mode(I haven't used it,but the documents say it
is used for DCT or FFT)
DAG unit
barrel shifter (not sure)
zero-overhead loop(ADI blckfin561 has this features, I don't know
the DSPs of other companies)
large stagte pipeline
ARM is a CPU, but after reading the documents, I find that ARM almost
has all above features,
I am told that CPU is for control applications, and DSP is for
computation-intensive applications
what architectural features make CPU suitable for co...
difference between CPU and DSPThe features of DSP:
Harvard architecture
hardware multiplier
SIMD instruction
special addressing mode(I haven't used it,but the documents say it
is used for DCT or FFT)
DAG unit
barrel shifter (not sure)
zero-overhead loop(ADI blckfin561 has this features, I don't know
the DSPs of other companies)
large stage pipeline
ARM is a CPU, but after reading the documents, I find that ARM almost
has all above features,
I am told that CPU is for control applications, and DSP is for
computation-intensive applications
what architectural features make CPU suitable for con...
/dev/dsp could not be openedI just installed Ubuntu 5.10 on an old pc that I have.
This computer has a SoundBlaster AWE64 ISA PnP sound card.
I am not sure that the sound card is even installed properly. Everytime
I try to play audio or even record something I get an error saying:
Error loading the sound driver device /dev/dsp could not be opened.
I just tried the following without any luck:
sudo modprobe snd-pcm-oss
sudo modprobe snd-pcm-mixer-oss
I am guessing that changes the driver to OSS. How do you change back to
ALSA?
I also tried the following:
sudo apt-get install udev
That didnt help either.
I tried instal...
which DSP?Hello,
I have a Yakumo Hypersound 128 MP3-Player and would
like to modify the firmware. Can anybody tell we,
which DSP is used?
Thank you in advance,
Daniel
...
SoundHello,
I am running Slackare 13 Linux on my laptop. One of the issues I have
noticed recently is that when I have Firefox running on YouTube or
similar site and then want to startup MPlayer/Audaciou or some
audio/video client, the clients will not even start up. Even on
command line, I cannot play any music. It looks like the Flash player
in Firefox is locking the /dev/dsp as long as the browser is up. Is
there anyway to allow the /dev/dsp device be accessed by other
applications at the sametime? (I know it is going to be annoying to
listen to multiple sounds at the s...
DSP@DSP@ fetches the address of the top of stack, and places it on the
stack.
In doing so, of course, a new stack entry has to be created. So, which
address goes on the stack? The previous one (before the new stack
entry) or the new one?
Currently, my code uses the new address:
INCT R4 - create new stack entry
MOV R4,*R4 - place address of stack pointer in top stack entry
Mark.
Op Mon, 13 Apr 2009 10:58:16 -0700 (PDT) schreef MarkWills:
> DSP@ fetches the address of the top of stack, and places it on the
> stack.
>
> In doing so, of course, a new stack entry has to be created. ...
embedded target DSPhello community,
i need urgent help.
does anyone has installed the toolbox "Embedded Target For TI 2000
DSP" or any other DSP. Of course with "Link to Code Composer Studio"?
It doesnt't work like it should. I got the project in the CCS but
when linking i got the errors with
MMREGS and config_ADC_A and config_PWM_A (its the simple tutorial
example where the ADC and the PWM ports are used).
Because of the error when linking i think there is a target specific
library wich is lost or which i don't find.
Does anyone knows in which library these target specific things a...