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through-zero doppler


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In today's increasingly mechanized world, where the bottom line so often takes precedence over human considerations, the working man never knows how long it will be before he is replaced by a machine. It's no secret that some in management at Gillian's Fish Products, where I work, feel that automation would improve productivity and quality control. But what they don't understand is that they will lose something far more valuable if employees are let go: the resentful human touch.

 

No mere machine can replace the embittered alienation of the flesh-and-blood worker. Sure, machines may be able to gut whitefish in the blink of an eye. But would they be able, as I am, to despise and bemoan their miserable lot? To seethe with the unbearable knowledge that this will be their sole livelihood until the day they die? To identify with the glassy, sightless eye of every fish as their sharp blades spill the innards out?

 

Whether it's scaling each cod and struggling to suppress the repulsion and loathing within, or de-boning each haddock while fighting the impulse to drop the knife and walk out of the factory as far as your legs can take you, such sentiments could never be reproduced in mechanical form. Those special qualities can only come from one source: exhausted men and women forced to feed and clothe their children on a pauper's wages.

 

Replacing us with machines will increase profits, but can a dollar value be placed on the labors of someone who drinks before his morning shift just to get through the day? And when the machines are sitting in six-inch-deep gore at day's end, will they go home and take out their frustrations on family members and loved ones? I think not.

 

A machine can only contain wires, diodes, and gears, not the living, breathing sum of life's screw-ups, heartbreaks, and regrets.

 

You can install machines, but you can't install the permanent smell of fish in your nostrils, or hands that have been roughened, swollen, and discolored from years of fish dismemberment. You can build a machine to replicate the same repetitive motions we perform five backbreaking days a week, but all the engineers in the world cannot build a machine that will repeatedly bang its head on a locker, silent tears streaming down its metal cheeks, as it contemplates its wasted life.

 

Can a machine fume about years without a decent vacation, or having to pay exorbitant rent in a company-owned tenement near the factory? This, surely, only a man can do

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Whatever kiwi thats not true

 

Pitch goes up, pitch goes down, pitch goes up, pitch goes down ...

 

""reverse the motor""

 

Pitch goes down, pitch goes up, pitch goes down, pitch goes up .

 

 

The pitch doesn't go down because its going the other way

 

 

Does it matter if i drive my car in reverse down the street as if i drive my car forward down the street to get from point A to point B no it doesn't , do my tires on my car make a different sound? NO. does my car radio Pitch does UP if i pass the listener NO the sound still goes DOWN in pitch because thats the doppler effect when the sound passes the listener the pitch goes down. So your saying if the Ice Cream Trunk passes me the music box toon's pitch goes "down" if i wave my hand to catch my ice cream

man and he reverses his ice cream trunk and passes me in reverse the pitch goes 'UP"

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Originally posted by Chad-Chicago

In today's increasingly mechanized world, where the bottom line so often takes precedence over human considerations, the working man never knows how long it will be before he is replaced by a machine. It's no secret that some in management at Gillian's Fish Products, where I work, feel that automation would improve productivity and quality control. But what they don't understand is that they will lose something far more valuable if employees are let go: the resentful human touch.

 

No mere machine can replace the embittered alienation of the flesh-and-blood worker. Sure, machines may be able to gut whitefish in the blink of an eye. But would they be able, as I am, to despise and bemoan their miserable lot? To seethe with the unbearable knowledge that this will be their sole livelihood until the day they die? To identify with the glassy, sightless eye of every fish as their sharp blades spill the innards out?

 

Whether it's scaling each cod and struggling to suppress the repulsion and loathing within, or de-boning each haddock while fighting the impulse to drop the knife and walk out of the factory as far as your legs can take you, such sentiments could never be reproduced in mechanical form. Those special qualities can only come from one source: exhausted men and women forced to feed and clothe their children on a pauper's wages.

 

Replacing us with machines will increase profits, but can a dollar value be placed on the labors of someone who drinks before his morning shift just to get through the day? And when the machines are sitting in six-inch-deep gore at day's end, will they go home and take out their frustrations on family members and loved ones? I think not.

 

A machine can only contain wires, diodes, and gears, not the living, breathing sum of life's screw-ups, heartbreaks, and regrets.

 

You can install machines, but you can't install the permanent smell of fish in your nostrils, or hands that have been roughened, swollen, and discolored from years of fish dismemberment. You can build a machine to replicate the same repetitive motions we perform five backbreaking days a week, but all the engineers in the world cannot build a machine that will repeatedly bang its head on a locker, silent tears streaming down its metal cheeks, as it contemplates its wasted life.

 

Can a machine fume about years without a decent vacation, or having to pay exorbitant rent in a company-owned tenement near the factory? This, surely, only a man can do

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Originally posted by Walters9515

Does it matter if i drive my car in reverse down the street as if i drive my car forward down the street to get from point A to point B no it doesn't , do my tires on my car make a different sound? NO. does my car radio Pitch does UP if i pass the listener NO the sound still goes DOWN in pitch because thats the doppler effect when the sound passes the listener the pitch goes down. So your saying if the Ice Cream Trunk passes me the music box toon's pitch goes "down" if i wave my hand to catch my ice cream

man and he reverses his ice cream trunk and passes me in reverse the pitch goes 'UP"

 

Actually, it DOES matter in that if you get caught by your local policeman doing so.... your wallet will suffer some serious sizzle and flange as your bank account reverberates due to the lack of funds incrementally affected by a reduction in the AD converters tallied by the Judge.

 

Does your radio pitch does up? I dont know, I dont think there can be a serious answer to this. Perhaps the power of prayer?

 

As for the ice cream man, I DO know that yelling "ICE CREAM!!!!!!!" at the top of my lungs definitely changes pitch no matter what direction the poor guy is travelling. his tires DO change in pitch when running over the friendly neighborhood red squirrel that was stupid enough to try and cross the road in the first place.

(But in all seriousness, that IS another story)

 

:D

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The pitch doesn't go down because its going the other way

Marissa love, you clearly don't understand what the Doppler effect is, or the basic laws of physics. Or much at all really.

 

What you just said makes as much sense as saying that gravity doesn't pull you downwards.

 

To take your car radio example: the pitch heard by the listener only goes DOWN if the car is receding AWAY from you. If the car is APPROACHING you, the pitch goes UP.

 

The vehicle speed gets added to the speed of sound, and the sound waves reach your ear faster as a result. Pitch goes up.

 

And obviously (to most people), if the car is moving away from you, the soundwaves get delay or s-t-r-e-t-c-h-e-d out, resulting in a drop in pitch.

 

Here, let me put this into words that you will understand:

 

why? why how how flanger walters dog food how cut the traces why? how do I sizzle how?? sizzle level digital why rivet sizzle Tascam leslie flange NTK postive negative Fletcher positive negative how parking lot answer kiwi phil delay how do I my delayed digital why phil delayed break the traces negative my delay flange level watery dog food why break the traces how Tascam delay why oscillating how? retard how I why?? how Why? how?? postive blue bear swells swells ADT what delay retard Fletcher fart dog food negative how?? ADT what delay overlapping how Tascam how level swells how level when slosh flanger slosh where when positive flanger flanger postive how?? delays phil kiwi

 

Have a happy Christmass sweetie :wave:

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Leslie cab#1:

 

Motor forward:

 

The microphone is in the middle of the leslie cab

the leslie goes clockwise so the pitch passing the microphone does DOWN

 

 

Leslie cab#2

 

Motor Reverse

 

The microphone is in the middle of the leslie cab

The leslie goes Counter clockwise so the pitch passing the microphone does UP?

 

 

If the Microphone is in the SAME position and place i don't get how if the motor is going clockwise or counter clockwise would make a difference because the microphone is AT the SAME place?

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Originally posted by Walters9515

Leslie cab#1:


Motor forward:


The microphone is in the middle of the leslie cab

the leslie goes clockwise so the pitch passing the microphone does DOWN



Leslie cab#2


Motor Reverse


The microphone is in the middle of the leslie cab

The leslie goes Counter clockwise so the pitch passing the microphone does UP?



If the Microphone is in the SAME position and place i don't get how if the motor is going clockwise or counter clockwise would make a difference because the microphone is AT the SAME place?

 

Well, what if the microphone was actually in a JOHNNY-CAB in the same position? The pitch would does down the way its supposed to without converters.

Clockwise or counter-clockwise it may do the same way on the other side of the flange.

 

But I'm not sure it would work the way YOU would want it to. All I can say is for you to experiment with it. Use some google to look up anything here you dont understand. or maybe ask Chad.

 

:)

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I don't really know what part of this you are struggling with darling ... let's try this again, shall we?

 

 

Leslie horn approaching the mic - pitch goes up.

 

Leslie horn right on the mic - original pitch

 

Leslie horn receding away from the mic - pitch goes down.

 

The result is sort of like a sine wave vibrato. Except it's made much more complicated by all the reflected sound that introduces delays and phase shifts - but sweetie, try to walk before you can run - there's a good girl.

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Most all Lawn Care items fall into one of the following categories. From Establishment to Mowing or Watering. We will follow the example of a new lawn being established and cared for over the course of a season and list the things that may need to be done. We can't cover every single item that there is possible to be done to a lawn here for lack of time and space, however, if you don't find it here you will find it in our Lawn Care Manual or Sprinkler System Installation Manual that you can order elsewhere on this site. Let's start with Establishing Turfgrass.

Establishment

 

Turfgrass can be established a variety of ways. The method you choose will be determined by the situation your lawn is in. Do you have a new construction? An existing lawn that is thin and rough? A fair lawn that is just a little thin? Depending on what condition your lawn is in will determine where to start. Let's say you have a lawn that is in fair condition but needs thickened up. An easy way to do this is to Aerate and overseed. An aerator is a machine that will poke a hole in the ground (thousands of them actually) and remove a core of soil and leave it laying on the surface. These are called core aerators. Some aerators will simply push a spike into the ground creating a hole, this type is not as good. To start with, mow your grass as low as you can safely, don't throw rocks and dig dirt with the mower, but get it down to about 1" high.

 

 

This will stunt the grass and slow it's growth allowing the new grass that you will seed to get started with limited competition from the existing grass. After mowing take an aerator, rent one, buy one or borrow one, and go over the entire lawn at least twice. Depending on the model you use, the aerator will poke holes every 2 to 8 inches apart. I like to be able to look down at the lawn at any point and not see spots that don't have holes larger than 6". If you have a spot larger than 6" without holes in it, you won't have very much grass come up in that spot, so go over the lawn as many times as it takes to be sure you have holes everywhere. Once your done aerating, spread your seed. The amount of seed you use is important. If you don't use enough you won't get the desired results. Professionally, we use 350# per acre for lawns. Divided out per thousand square feet that is 8# per thousand square feet. This brings up an important point, measure the square footage of your lawn accurately and write it down. Every thing you do in lawn care will ask for how large the lawn is. Spread the seed with a spreader of any type, do not use your hand and just throw it around, you won't get even coverage. Spread the seed using half of the required amount spreading it in one direction, use the other half spreading the opposite direction creating a cross hatch pattern on the lawn. This way you are assured of getting even coverage. After spreading the seed take a drag of any type, a piece of chain link fence, a board with a rope tied to it, or what ever you can drag behind your mower. Drag the lawn, this will push and drag seed into the holes you created and break up the little plugs of soil that the aerator left on the ground, it will cover up most of the seed giving much better germination and a thicker lawn. After dragging, spread a starter fertilizer, this can be done first if you want, it really doesn't matter. A starter fertilizer has a higher middle number than first and last numbers. (More Phosphate) For complete explanation on what the numbers mean on fertilizer bags, how they affect grass and what micro-nutrients grass also needs, refer to our Lawn Care Manual. You will need to put down 8 pounds per thousand square feet of a 6-12-12 or 4 pounds per K of a 6-24-24. This will give the ground the nutrients needed to germinate and start a turf lawn, thus the name "starter fertilizer". After about a month the new grass will start to yellow off some or maybe turn pale green, this is showing you that it is time to fertilize again. Apply 6# per K of 15-15-15 this will provide the nitrogen for green and growth and phosphate and potash for root growth and overall vigor. After the grass is about 3 weeks old you should be able to start mowing. CUT IT HIGH!!! Refer to the section on mowing for more. Fertilizing will also need to be done on a regular schedule. Refer to Fertilizing for a complete schedule. If you have a new home and this is the first lawn a few things are different. Mainly you will have to do clean up and get the proper grade before working on seeding. Once this is done you will have to till up the ground to make a soft seed bed. After tilling fertilize, and seed just as described above using the same amount of seed. After this you will have to cover the entire lawn with straw. Shake out straw to cover approximately 50% of the soil from view. After done you should be able to look down and still see about half of the soil showing through the straw, no more. This equates to about 100 bales per acre. After your done strawing it's time to start watering. Soak the lawn until runoff the first watering, followed by daily waterings of sufficient length to keep the soil wet. If it dries out, the seed won't germinate.

Fertilizing

 

Fertilizing the grass does more than just make it green. Of course it will make it grow too, but lot's of things happen when you fertilize. Going back to our establishment, fertilizer makes the seed germinate faster, and get started out of the ground. After the grass has a good start fertilizer will make the grass get thicker send off Rhizomes, Stolons or Tillers all making the grass thicker and healthier. What most people want to know is how much and when. Simply put, most grasses will benefit from four applications of fertilizer per year. Spread out 60 days apart starting in early spring approximately 30 days before the growing season starts in your area, continuing through the growing season until fall. Spring fertilizing gets the grass off to a fast start giving you that rich green color everyone wants. A word of warning though, don't use too much fertilizer, follow the listed guidelines on the bag, or these generic instructions. Too much fertilizer will cause excess growth, lead to Fungus growth and weaken the grass.

Weed Control

 

Controlling weeds in a new or existing lawn is vital to the health and overall appearance of the lawn. A beautiful smooth lawn gets most of it's good looks from the fact that it is smooth and level with no weeds sticking up above the turf. You have probably mowed your lawn before only to have dandelions popping up above the grass a day later making it look like you need to mow already. A weed free lawn holds it's good looks for several days if the grass is a monoculture with uniform growing heights.

Proper Mowing

 

Mowing is the most misunderstood part of lawn care, and the most often incorrectly performed part of lawn care. Far too many people will set their mowers too low or "scalp" the lawn. This leads to thin and dying out grass, shallow root systems, and in the long run, NO GRASS.

Watering

 

Once you have achieved the perfect lawn, after hundreds or thousands of dollars on Renovating or installing a lawn, it just doesn't make sense to let it go back to being a pasture from lack of watering or other maintenance that needs to be done. Spend a little time and money and keep it watered and you will keep the lush grass you spent your hard earned money and time on. The Ideal way to water your lawn is with an Automatic Underground Sprinkler System. This way the watering is done every day that it needs it, you don't have to drag hoses, you don't waste water from

 

 

overwatering, you get all of the lawn watered, not just where you happen to set the sprinkler. How many times have you started the sprinkler then forgot to move it? This wastes water and over waters some parts of the lawn while other parts may never get water because it's too far to drag a hose to. Another common problem in hand watering is that you can only run one or two sprinklers at a time. If you have a very large lawn this could take all day to water. Automatic systems will water when you program the system to come on, once a day, every other day, once a week, your choice for what needs to be watered. Also, shrubbery and annuals need to be watered separate from the lawn. If you applied the same amount of water on your landscape as gets put on the lawn you would surely kill some plants from overwatering. An automatic system waters landscape plants on their own zone at the times they need it, even multiple times per day for tender annuals like impatiens.

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Motor Forward:

Leslie horn aproaching the mic - pitch goes up.

 

Leslie horn right on the mic - original pitch

 

Leslie horn receding away from the mic - pitch goes down.

 

Motor Reverse:

 

Leslie horn aproaching the mic - pitch goes up.

 

Leslie horn right on the mic - original pitch

 

Leslie horn receding away from the mic - pitch goes down.

 

 

ITS THE SAME THING the horn just Approaches the mic and receding away from the mic just reverse

 

If the motor is in reverse how can it be RECEDing away before APPROCHING the mic?

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Originally posted by Walters9515

Motor Forward:



ITS THE SAME THING the horn just Approaches the mic and receding away from the mic just reverse


If the motor is in reverse how can it be RECEDing away before APPROCHING the mic?

 

 

I think it has a LOT to do with that Miracle-Ear by Ronco you've been using.

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And you didn't prove that it doesn't work. I'm sorry you don't have the brain power to understand it sweetie, but it's not false information.

 

I know you're a troll and all that, but you are a strange one.

 

You ask questions that a child might ask.

You get true answers.

You don't believe the answers you get.

You state that the answers are false.

If you knew the answer, why did you ask?

If you didn't know the answer, how can you say that the correct answer is false?

 

This is why people think you a just a jerk and deserve no respect. That's why we give you dog food - because you don't respect true information, only rubbish information.

 

I'm sorry this is way above your head - don't worry about.

 

Have a happy Chrismas.

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Dude if the Mic is a constant its FIXED not moving at all how can the speaker direction make a difference if the mic is FIXED its not going to make a difference if the speaker is clockwise VS counter clockwise its going to "Approach" the mic the same clockwise VS counter clockwise and " receding" the mic the same clockwise VS counter clockwise

 

Its just Mirrored point A approaching point B receding to point C

its the same as Point C approaching point B receding to point A

 

 

The sound coming out of the leslie speaker is Neutral

 

motor Forward dirction

The Appraching pitch Shift Vs the Receding pitch Shift?

 

Motor Reverse direction

 

The Appraching pitch Shift Vs the Receding pitch Shift?

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Hummm let's see...

 

(1) Turn Lesie No.1 ON and turn the rotors ON.

 

(2) Turn Leslie No. 2 ON and turn the rotors ON.

 

(3) NOW lift Leslie 2 over your shoulders and run in circles around Leslie Number 1. Set 4 Omni-patterned microphones around the whole area to catch the resulting sound.

 

I don't know if it might work, but surely fun to watch.

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Hush now darling - don't cry.

 

Do you even know what a Leslie speaker is? From what you are saying, I don't think so. I've owned several, and I usually pulled them apart and re-powered them with solid state amps. I'm very familar with the guts of a Leslie.

 

Let's take the top horn (forget the rotor for a while, but the principle is exactly the same).

 

You have a speaker driver mounted below the base plate, facing upwards. The sound travels upwards into the horn. The horn is a bent tube, so the sound travel through 90 degrees and comes out the flared horn. The horn has a counterbalance horn, just for balance. These two horns are driven by a pully from a two-speed motor.

 

So the sound is coming out of one horn, which is spinning around in a horizontal plane.

 

So yes - the speaker is stationary

And yes - the microphone is stationary.

 

But you microphone is not pointing at the speaker - it's pointing at the horn. And that horn is either approaching, or receding away from the mic.

 

Such a simple thing is actually very complex to model. Because you have a doppler pitch bending effect going on - rising and falling in pitch. You also have a tremelo effect going on - rising and falling in amplitude. You have a whole bunch of early reflections going on, creating moving delays and resultant phase shifts.

 

And then you have the lower rotor, at slower speed, fed from a crossover, adding to the chaos. Especially when you change speeds - you get the different acceleration or deceleration rates and the whole thing is very complex.

 

OK - you are showing you ignorance here Walters. Or are you still just pretending to be ignorant? I think this must be real ignorance. :idea:

 

Anyway - have a great Christmas sweetie.

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So yes - the speaker is stationary

And yes - the microphone is stationary.

 

 

The only thing that is moving is the "Baffle" hooked up to the motor is doesn't changes the pitch if it moves counter clockwise from clockwise

 

Your saying that if the Baffle moves clockwife the pitch does down moving away from the mic

 

if the baffle moves counter clockwise the pitch does UP moving away from the mic?

 

How does the pitch go UP moving away from the stationary mic?

this is what i don't get

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Leslies use horns and rotors. I think Fender and some others used baffles - but the principle is all the same.

 

Using a baffle for example. Imagine the speaker is playing a pure note from an organ, at a fixed pitch.

 

When the baffle is moving towards you, it is pushing the soundwaves in the air towards you. That speeds them up - they reach your ears quicker, and you hear that as a higher pitch.

 

When the baffle is moving away from you, it is pushing the soundwaves in the air away from you. That slows them down - they take longer to reach your ears, and you hear that as a lower pitch.

 

That happens with every rotation.

 

If you reverse the direction of the motor, you are right - it basically sounds the same. You get the same rising and falling with each rotation.

 

So to answer you original question - how to get a leslie to 'doppler through zero'? Well ignoring your crap grammer, basically all you have to do is switch it on. All leslies bend the pitch up and down "through zero", since we've agreed that "zero" is the original pitch.

 

And how to reverse the doppler rotation effect? Just reverse the motor.

 

I never said it wouldn't sound basically the same.

 

But reversed is reversed. That's all you said you wanted.

 

You'll be using a software leslie anyway - so just reverse the polarity, or swap you left and right cables around.

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Originally posted by Walters9515

Why do u have 7 leslies do they sound different? and Why do they sound different is it because they cabinet material shape,size,woods?


Why did u change it to solid state power amp?

 

 

Yes, and yes, yes , and yes. Seriously, is it that hard a concept to grasp?

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