Narrow-Bandwidth Television Association

I came across an item on YouTube which I found interesting called OscilloFun.

We NBTV-ers are familiar with using oscilloscopes to display NBTV using the X, Y, and Z (or pwm) channels, but it delights me to see that you can create graphics such as 3D boxes and text with what, to the ear, appears to be passable music.

Someone posted a link to a FLAC version of the music (oscillofun.flac). I have converted it to wav and, for those who don't own an oscilloscope and wish to try it, have written a small virtual 'scope to display it on. I also attach a link to a video showing it running on my PC (BTW it will require a modernish PC running windows >= XP).

http://www.youtube.com/watch?v=-zYBRFvO1gQ

Nice

Do you know if a programm allows to "write" on spectrograph ?

See also YouScope. I'm sure I have a WAV file of (an earlier version of) this (feeds into X and Y inputs of 'scope) somewhere, but can't lay my hands on it at present.

Playing it from my (now deceased) laptop, I remember that the inversion problem meant that I had my 'scope lying on its back to watch it!

http://www.youtube.com/watch?v=UcBDSoVs42M&feature=related

Lowtone wrote:Nice

Do you know if a programm allows to "write" on spectrograph ?

Yes I have written a (slow) version of such a programme and could post it if you like, but there are lots of (better) free versions on the net (e.g. google bitmap&wave etc).

Audacity is a good free way of viewing this type of file.

Dave Moll wrote:See also YouScope. I'm sure I have a WAV file of (an earlier version of) this (feeds into X and Y inputs of 'scope) somewhere, but can't lay my hands on it at present.

Playing it from my (now deceased) laptop, I remember that the inversion problem meant that I had my 'scope lying on its back to watch it!

Yes I have that (see attached).

I guess the main difference between this and the spectrum files to the oscillofun files is the latter is truly "listenable" in it's own right - someone went to a great deal of trouble to achieve that.

Edit: It seems uploads are disabled or there is a server problem at the moment - I will try to upload later.

Edit: looks like the full item was too big to upload - here is part 1 - let me know if anyone wants part 2

Dear All,

There is a 20MB limit on uploads...probably the default value in the forum software. But that can be changed if you wish to upload a larger file...just let Andrew, Dave or I know and we'll give you the green light.

Steve A.

gary wrote:
Yes I have written a (slow) version of such a programme and could post it if you like, but there are lots of (better) free versions on the net (e.g. google bitmap&wave etc).

It would be nice to try

gary wrote:Audacity is a good free way of viewing this type of file.

I use Gram 5 to see spectrographs

Lowtone wrote:It would be nice to try

Here it is then - warning don't bother trying it on very large images unless you have a lot of time or processing power available:

Here is an example of a familiar image:

and as displayed in cooledit 2000


(note the generator is optimised for a band resolution of 256)

Ah thanks
It works but really good with Gram 5, I have to speed up the file in order to display the picture

I have deliberately posted this to "O Silly Scope" because that is what I am begining to believe I have bought.
Yes, it is a (ARM) DSO 201 nano hand-held scope from eBay.
It came without any destructions, and what I have managed to glean from the net is most confusing. (It is not written in a format that in my dotage, am I able to understand).
I have bought a microSD card, formatted it in FAT16 ( a format foreign to LINUX), but cannot get it to save, let alone display, traces, tho' it gives a lovely clear trace from the Triple Waveform Generator.

Anyone got any exoerience with this toy?

Many thanks,

Alan

DSO201 - Problem solved!
Eventually sent to Seeed Studio forum at www.seeedstudio.com/forum/viewforum.php?f=12 (Yes, 3 * 'e' in the name)
There it was suggested that SD card was faulty or not properly in contact. The latter proved the fault - judicious use of a fingernail finally pressed the card home. Then up came functions that were previously missing. A fine little gadget!

Alan.