Stupid question--rise and fall

[Peaches]

Is (was) it just me, or is the shape of the rise and fall different between waltz and foxtrot?

I wish I could remember my algebra better, because in my mind I can see these sine-wave-esque graphs to describe what I mean, but I don't remember enough to be able to give a formula for things, lol.  But it just seems (seemed) to me like foxtrot is more of a sine wave that's been shifted upward (so all values are positive) and flattened, whereas I think of vals...er, *delete*delete*delete*delete*, waltz...is more of a negative, absolute value sine wave (I think that's what I mean.) that's also been shifted upwards so that all values are positive.

Is this making sense...shoddy algebra aside?

[elisedance]

not exactly to me at least...  I think of foxtrot as a sine wave for sure but waltz has more wind so the waves form peaks

But both are a bit misleading since its really more about energy than rise and fall - where to put it and, even more important where not.

[Peaches]

not exactly to me at least...  I think of foxtrot as a sine wave for sure but waltz has more wind so the waves form peaks

But both are a bit misleading since its really more about energy than rise and fall - where to put it and, even more important where not.

/*geek on*/
But if there's an absolute value function involved the graph would come to points, abeit pointing downwards.  The negative values would all end up reflected around the x-axis.  It would end up looking like a bunny hopping through the grass.  Put a negative in front of the entire thing and, IIRC, it should take that entire resultant graph and flip it upside down.  Then shift upwards.  I think.  (God, it's been a long time since I've had to think about this stuff.)

I think we're in agreement, though...

[elisedance]

not exactly to me at least...  I think of foxtrot as a sine wave for sure but waltz has more wind so the waves form peaks

But both are a bit misleading since its really more about energy than rise and fall - where to put it and, even more important where not.

/*geek on*/
But if there's an absolute value function involved the graph would come to points, abeit pointing downwards.  The negative values would all end up reflected around the x-axis.  It would end up looking like a bunny hopping through the grass.  Put a negative in front of the entire thing and, IIRC, it should take that entire resultant graph and flip it upside down.  Then shift upwards.  I think.  (God, it's been a long time since I've had to think about this stuff.)

I think we're in agreement, though...

I trust you

[TangoDancer]

ED's post could not have been better. Yes, there is a distinct difference in the rises/lowers of both dances (though, we rarely see it in the int'l, and almost 'never' see it in the american). Her post reads that the enrgies create different timings, shapes, peaks, etc. which, of course, require, though a shared principle, different techniques.

[ZPomeroy]

waltz...is more of a negative, absolute value sine wave (I think that's what I mean.) that's also been shifted upwards so that all values are positive.

Is this making sense...shoddy algebra aside?

I think i understand what you mean, though you would want a reflection in the x axis so something like - lsinxl so that every cusp (at half of the period) would be the peak of the rise. Is that what you meant?

Zac

[QPO]

it is not that the rise and fall is displayed differently. as in foxtrot it is mostly done with CBM more than in waltz. Or have I misinterpreted the question

[Peaches]

waltz...is more of a negative, absolute value sine wave (I think that's what I mean.) that's also been shifted upwards so that all values are positive.

Is this making sense...shoddy algebra aside?

I think i understand what you mean, though you would want a reflection in the x axis so something like - lsinxl so that every cusp (at half of the period) would be the peak of the rise. Is that what you meant?

Zac

Bingo!

[elisedance]

waltz...is more of a negative, absolute value sine wave (I think that's what I mean.) that's also been shifted upwards so that all values are positive.

Is this making sense...shoddy algebra aside?

I think i understand what you mean, though you would want a reflection in the x axis so something like - lsinxl so that every cusp (at half of the period) would be the peak of the rise. Is that what you meant?

Zac

Bingo!

you could do it electronically with a diode acting as a rectifier

[Peaches]

"My cat's breath smells like cat food."

[QPO]

I am feeling rather labotamised here 

[cornutt]

waltz...is more of a negative, absolute value sine wave (I think that's what I mean.) that's also been shifted upwards so that all values are positive.

Is this making sense...shoddy algebra aside?

I think i understand what you mean, though you would want a reflection in the x axis so something like - lsinxl so that every cusp (at half of the period) would be the peak of the rise. Is that what you meant?

Zac

Bingo!

you could do it electronically with a diode acting as a rectifier

You have to add a bias, otherwise diode drop will clip the bottom off.   

[elisedance]

lets design a waltz cirtuit board

[TangoDancer]

Finally got a student to understand the difference that Rise and Fall refers to the body, and Rise and Lower refer to the feet, and that both need to be addressed seperately when we dance. Light bulbs! Epiphanies! He is getting better now.

[QPO]

Finally got a student to understand the difference that Rise and Fall refers to the body, and Rise and Lower refer to the feet, and that both need to be addressed seperately when we dance. Light bulbs! Epiphanies! He is getting better now.

I love those moments