DSP Robotics Support

tulamide wrote:Here's something you will really like (and which is very unusual). In the Ruby version you can actually enter a negative value for the decimal places.

Example:
156.49

places 2 => 156.49
places 1 => 156.5
places 0 => 156
places -1 => 160
places -2 => 200

Isn't that cool?

tulamide,
I went back to the examples and I see what you mean.
Ruby rounds 'up' with negative decimal places.
Thanks for your patience.
Also, it seems that 4 decimal places is about it for Ruby.

Best,

ROXY

rocknrollkat wrote:Jan. 28, 2016
Here's something I just discovered, purely by accident.
You can use readouts as summing points.

ROXY

It also works nicely with STRINGS. The TRIGGER [connection order] is important.

RJHollins wrote:

rocknrollkat wrote:Jan. 28, 2016
Here's something I just discovered, purely by accident.
You can use readouts as summing points.

ROXY

It also works nicely with STRINGS. The TRIGGER [connection order] is important.

I just tried this with strings, and actually it 'concatenates' (strings together) numbers, words, or combinations.
And yes, the connection order is important.
Here's a schematic demonstrating the principle.

Enjoy !

ROXY

Hello Gang,

Find uploaded a perfect doubler for sine waves. This works as a phase locked loop with out the filter.
It can even lock to other wave forms, but with a distorted output of course.
Hope someone finds this useful, and if you do PLEASE comment on how you used it or if you add something to it also.

Schematic and module uploaded. Note that I cascaded it. You could build an octave generator with several of these.

Later then, BobF.....

Feb. 6, 2016
Hi gang,
Bob's Freq. Doubler reminded me of one that I built by accident while trying to develop a 'capacitor' in Flowstone.
It takes up an incredibly small 352 bytes, is 'level' adjustable, cascadable, how much fun can you have with it ??
Replace the float value of 6 (unity gain) with a (here it comes....) 'knob' from let's say 1 to 10 and have even more fun !!
Enjoy your new toy !!

ROXY

@Bob: Clever stuff there! You could create the basis for a nice traditional organ from that.
I wonder if the CPU would be less than using several sine oscillators with freq set to x2, x4, x8 etc. Any idea anyone?

@Roxy: This is essentially a ring modulator so you get a sum and difference of the two input frequencies. If both are the same sine wave you get f+f and f-f (zero) so it doubles. I like making dissonant sounds with these.

Cheers

Spogg

@Roxy: This is essentially a ring modulator so you get a sum and difference of the two input frequencies. If both are the same sine wave you get f+f and f-f (zero) so it doubles. I like making dissonant sounds with these.

Hi Spogg,
Interesting analysis, The first 'multiply' block is there to raise the gain to a useful level, nothing more.
I was taught that a ring modulator uses diodes in a switching ring to create the f+f,f-f formula, as you point out.
This should be an addition - subtraction problem, yet it works with a 'multiply' block.
I substituted the 'multiply' blocks with 'add' blocks, no dice.
This is where I get into trouble.
Flowstone has its own ideas about these 'modules', they do NOT replicate their hardware counterparts, I've found.
Any thoughts, etc., always welcome !!

All the best,

ROXY

Hi guys,

Thanks for the feedback! Really hope someone can post more ideas on a use for this PLL doubler.
Great idea there Spogg. I will have to look at this some more when I have time.

Spogg is correct in the 60's and 70's there where ring modulators built around IC's like the MC1495 and CA3080. The MC1495 was a four quadrant multiplier , while the CA3080 was a operational trans-conductance op-amp. The OTA for short was used in many a synthesizer for the building of VCA's , VCO's, VCF's and etc.. Look it up, its a cool device if you are into hardware.

Again thanks, BobF....

Feb. 10, 2016
I used to build ring modulators using 4 diodes in the classic ring configuration, with 3 transformers, an input, modulation and output transformer.
Those days were really fun, discrete components is what I came up on.
Tubes, then transistors, then chips....

ROXY

Nubeat7 wrote:interesting way to do it
you can also use the format prim for this, it has the advantage of correct roundings...

Thanks for the schematic, and sorry for the delay in getting back to you !

ROXY