Hi, my name is Steve Drake and I have been watching this NG for many years. I now help at the University of Alberta in the communications department and I'm looking for demo's with DSP's. I want to find some way to excite students about this hardware. And what can be done with it. I would like to ask you out there about what was your most memorable demo you saw while going to University? What things really stood out when you saw them on a scope, or heard on a speaker. So far I remember one thread here about the shepherds pipe ( I know its not really showing the hardware) and thought that might interest some students, also just talking into a mike while hearing yourself on a headset with different delays was kinda fun. I am interested in any ideas. Thanks for your time. Regards, Steve Drake
The Coolest Demo you ever saw ?
Started by ●November 17, 2003
Reply by ●November 18, 20032003-11-18
Steve Drake wrote:> Hi, my name is Steve Drake and I have been watching this NG for > many > years. I now help at the University of Alberta in the > communications > department and I'm looking for demo's with DSP's. I want to find > some > way to excite students about this hardware. And what can be done > with it. > > I would like to ask you out there about what was your most > memorable > demo you saw while going to University? What things really stood > out when you saw them on a scope, or heard on a speaker. > > So far I remember one thread here about the shepherds pipe ( I > know > its not really showing the hardware) and thought that might > interest some students, also just talking into a mike while > hearing yourself on a headset with different delays was kinda fun. > > I am interested in any ideas. Thanks for your time. > > Regards, > > Steve DrakeOne which I remember was "Stairways to heaven", played in a mono track, then provided with an artificial echo. I was amazed how much a mathematically simple calculation of delays and summing it into the mono tune could influence the "stereo" feeling. Bernhard
Reply by ●November 19, 20032003-11-19
Steve Drake <sdrake@freenet.edmonton.ab.ca> wrote in message news:<vpvirvg2665i5rkqkfdiupeuitpl4u8n3l@4ax.com>...> Hi, my name is Steve Drake and I have been watching this NG for many > years. I now help at the University of Alberta in the communications > department and I'm looking for demo's with DSP's. I want to find some > way to excite students about this hardware. And what can be done with > it. > > I would like to ask you out there about what was your most memorable > demo you saw while going to University? What things really stood out > when you saw them on a scope, or heard on a speaker. > > So far I remember one thread here about the shepherds pipe ( I know > its not really showing the hardware) and thought that might interest > some students, also just talking into a mike while hearing yourself on > a headset with different delays was kinda fun. > > I am interested in any ideas. Thanks for your time. > > Regards, > > Steve DrakeThe most impressive DSP demo I ever saw was just a couple of years ago. Somebody had been to sea and collected some sidescan sonar data. In the first image you saw there was something on the sea floor, but the image was rough and blurry. An then we saw the Synthetic Apertuere Sonar image made from the same data, and everything just came into focus. Rune
Reply by ●November 21, 20032003-11-21
Rune Allnor wrote:> Steve Drake <sdrake@freenet.edmonton.ab.ca> wrote in message news:<vpvirvg2665i5rkqkfdiupeuitpl4u8n3l@4ax.com>... > > Hi, my name is Steve Drake and I have been watching this NG for many > > years. I now help at the University of Alberta in the communications > > department and I'm looking for demo's with DSP's. I want to find some > > way to excite students about this hardware. And what can be done with > > it. > > > > I would like to ask you out there about what was your most memorable > > demo you saw while going to University? What things really stood out > > when you saw them on a scope, or heard on a speaker. > > > > So far I remember one thread here about the shepherds pipe ( I know > > its not really showing the hardware) and thought that might interest > > some students, also just talking into a mike while hearing yourself on > > a headset with different delays was kinda fun. > > > > I am interested in any ideas. Thanks for your time. > > > > Regards, > > > > Steve Drake > > The most impressive DSP demo I ever saw was just a couple of years ago. > Somebody had been to sea and collected some sidescan sonar data. In the > first image you saw there was something on the sea floor, but the image > was rough and blurry. An then we saw the Synthetic Apertuere Sonar image > made from the same data, and everything just came into focus. > > RuneMaybe what they seem to call here 4D ultransonic scanning of a baby in the womb. It is what appears to be a 3d pic of the baby (dunno why they call it 4D!). Tom
Reply by ●November 21, 20032003-11-21
"Tom" <somebody@nOpam.com> wrote in message news:3FBDCE1A.49A675F6@nOpam.com...> > > Rune Allnor wrote: > > > Steve Drake <sdrake@freenet.edmonton.ab.ca> wrote in messagenews:<vpvirvg2665i5rkqkfdiupeuitpl4u8n3l@4ax.com>...> > > Hi, my name is Steve Drake and I have been watching this NG for many > > > years. I now help at the University of Alberta in the communications > > > department and I'm looking for demo's with DSP's. I want to find some > > > way to excite students about this hardware. And what can be done with > > > it. > > > > > > I would like to ask you out there about what was your most memorable > > > demo you saw while going to University? What things really stood out > > > when you saw them on a scope, or heard on a speaker. > > > > > > So far I remember one thread here about the shepherds pipe ( I know > > > its not really showing the hardware) and thought that might interest > > > some students, also just talking into a mike while hearing yourself on > > > a headset with different delays was kinda fun. > > > > > > I am interested in any ideas. Thanks for your time. > > > > > > Regards, > > > > > > Steve Drake > > > > The most impressive DSP demo I ever saw was just a couple of years ago. > > Somebody had been to sea and collected some sidescan sonar data. In the > > first image you saw there was something on the sea floor, but the image > > was rough and blurry. An then we saw the Synthetic Apertuere Sonar image > > made from the same data, and everything just came into focus. > > > > Rune > > Maybe what they seem to call here 4D ultransonic scanning of a baby in thewomb. It is what appears to be a 3d pic of> the baby (dunno why they call it 4D!). > > Tom > >Time?
Reply by ●November 21, 20032003-11-21
Tom <somebody@nOpam.com> wrote in message news:<3FBDCE1A.49A675F6@nOpam.com>...> Rune Allnor wrote: > > > Steve Drake <sdrake@freenet.edmonton.ab.ca> wrote in message news:<vpvirvg2665i5rkqkfdiupeuitpl4u8n3l@4ax.com>... > > > Hi, my name is Steve Drake and I have been watching this NG for many > > > years. I now help at the University of Alberta in the communications > > > department and I'm looking for demo's with DSP's. I want to find some > > > way to excite students about this hardware. And what can be done with > > > it. > > > > > > I would like to ask you out there about what was your most memorable > > > demo you saw while going to University? What things really stood out > > > when you saw them on a scope, or heard on a speaker. > > > > > > So far I remember one thread here about the shepherds pipe ( I know > > > its not really showing the hardware) and thought that might interest > > > some students, also just talking into a mike while hearing yourself on > > > a headset with different delays was kinda fun. > > > > > > I am interested in any ideas. Thanks for your time. > > > > > > Regards, > > > > > > Steve Drake > > > > The most impressive DSP demo I ever saw was just a couple of years ago. > > Somebody had been to sea and collected some sidescan sonar data. In the > > first image you saw there was something on the sea floor, but the image > > was rough and blurry. An then we saw the Synthetic Apertuere Sonar image > > made from the same data, and everything just came into focus. > > > > Rune > > Maybe what they seem to call here 4D ultransonic scanning of a baby in the womb. It is what appears to be a 3d pic of > the baby (dunno why they call it 4D!). > > TomIt's called 4D because one scans/images a 3D volume that evolves with time. 3 spatial dimensions + time makes a 4D image. Rune
Reply by ●November 21, 20032003-11-21
Steve Drake wrote:> Hi, my name is Steve Drake and I have been watching this NG for many > years. I now help at the University of Alberta in the communications > department and I'm looking for demo's with DSP's. I want to find some > way to excite students about this hardware. And what can be done with > it. > > I would like to ask you out there about what was your most memorable > demo you saw while going to University? What things really stood out > when you saw them on a scope, or heard on a speaker. > > So far I remember one thread here about the shepherds pipe ( I know > its not really showing the hardware) and thought that might interest > some students, also just talking into a mike while hearing yourself on > a headset with different delays was kinda fun. > > I am interested in any ideas. Thanks for your time. > > Regards, > > Steve DrakeI can only speak for myself as to what is impressive. record musical instrument in presence of yammering class. play back music *without* noise. That would (would have) my attention. YMMV :)
Reply by ●December 1, 20032003-12-01
I agree about sticking to audio for impessive demos - it's something everyone can easily relate to, and is relatively inexpensive and simple processing. Simple things like surround sound, concert hall effects, filtering, etc. are all things that can be done easily and are impressive. I just flew back from London on the weekend and pressed a button on my entertainment console (since I didn't know what it did I just had to press it and see what happened) and noticed that all of a sudden I could hear the airplane engines with my headphones on, when I hadn't even really noticed them before. I had just thought it was the better quality headphones in business class (an upgrade), but there was obviously some kind of noise reduction built into the console. I'm not sure if it was active, or just designed for the known background noise of an aircraft, but it sure worked well, and the audio quality, which normally is awful on airplanes, was pretty decent. It impressed me, and every once in a while I had to turn it on and off to experience it again :-) So you see, even though I get to play with the latest and greatest high end DSPs, and was coming back from a trip to show these to our customers for things like 3G basestations and radar systems with 100 MHz data rates, I came away from the trip impressed with a DSP application that probably fit into a cheap little fixed pointer ... ------ Ron Huizen BittWare "Richard Owlett" <rowlett@atlascomm.net> wrote in message news:vrtb0bn4iknb89@corp.supernews.com...> Steve Drake wrote: > > > Hi, my name is Steve Drake and I have been watching this NG for many > > years. I now help at the University of Alberta in the communications > > department and I'm looking for demo's with DSP's. I want to find some > > way to excite students about this hardware. And what can be done with > > it. > > > > I would like to ask you out there about what was your most memorable > > demo you saw while going to University? What things really stood out > > when you saw them on a scope, or heard on a speaker. > > > > So far I remember one thread here about the shepherds pipe ( I know > > its not really showing the hardware) and thought that might interest > > some students, also just talking into a mike while hearing yourself on > > a headset with different delays was kinda fun. > > > > I am interested in any ideas. Thanks for your time. > > > > Regards, > > > > Steve Drake > > > I can only speak for myself as to what is impressive. > > record musical instrument in presence of yammering class. > > play back music *without* noise. > > That would (would have) my attention. YMMV :) > >
Reply by ●December 2, 20032003-12-02
Ron Huizen wrote:> ... there was obviously some kind of noise > reduction built into the console. I'm not sure if it was active, or just > designed for the known background noise of an aircraft, ...I'm really intrigued. Ignoring that the noise changes depending on the seat, how can the reduction be anything but active? I thought that the signal that one needs to add to a particular waveform to cancel it is unique, and that an average won't do. What don't I get? Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
Reply by ●December 3, 20032003-12-03
You probably don't get my ignorance :-) I assumed (yeah, I know what happens when you assume) that there was some way to compensate for known noise, and I further assumed that the majority of the background noise would be the same in different seats. I don't think the headphones were big enough to have the noise reduction circuit, but they did have a special plug (I assumed so you wouldn't take them with you) that maybe had a mic signal back to the console. Guess I should have tried making some more background noise to see if it got removed :-) ---- Ron "Jerry Avins" <jya@ieee.org> wrote in message news:3fccc36b$0$7588$afc38c87@...> Ron Huizen wrote: > > > ... there was obviously some kind of noise > > reduction built into the console. I'm not sure if it was active, orjust> > designed for the known background noise of an aircraft, ... > > I'm really intrigued. Ignoring that the noise changes depending on the > seat, how can the reduction be anything but active? I thought that the > signal that one needs to add to a particular waveform to cancel it is > unique, and that an average won't do. What don't I get? > > Jerry > -- > Engineering is the art of making what you want from things you can get. > ����������������������������������������������������������������������� >
