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#1
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DDR Machine
Hi!
I am new here Can anyone tell me what the DDR Machine is, please? Randi Helene |
#2
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A scam.
He claims it solves everything from barking to epilepsy--what trash. Science proves his claims are false: http://www.wirebird.com/bordercollie/doright.html -- Kristen & Kali CD, CGC, TDI, TT http://www.kristenandkali.com "Randi Helene Tillung" wrote in message ... Hi! I am new here Can anyone tell me what the DDR Machine is, please? Randi Helene |
#3
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A scam.
He claims it solves everything from barking to epilepsy--what trash. Science proves his claims are false: http://www.wirebird.com/bordercollie/doright.html -- Kristen & Kali CD, CGC, TDI, TT http://www.kristenandkali.com "Randi Helene Tillung" wrote in message ... Hi! I am new here Can anyone tell me what the DDR Machine is, please? Randi Helene |
#4
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you're full of crap. You shock your dog and tell us that it doesn't hurt.
_MLife KrisHur wrote: A scam. He claims it solves everything from barking to epilepsy--what trash. Science proves his claims are false: http://www.wirebird.com/bordercollie/doright.html |
#5
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you're full of crap. You shock your dog and tell us that it doesn't hurt.
_MLife KrisHur wrote: A scam. He claims it solves everything from barking to epilepsy--what trash. Science proves his claims are false: http://www.wirebird.com/bordercollie/doright.html |
#6
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On Sat, 6 Sep 2003 12:44:04 -0400, "KrisHur"
wrote: A scam. He claims it solves everything from barking to epilepsy--what trash. Science proves his claims are false: http://www.wirebird.com/bordercollie/doright.html This is not "science" as I know of it. But I'm not a scientist. Maybe a scientist would like to comment on the link above. Does it prove anything? Charlie |
#7
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On Sat, 6 Sep 2003 12:44:04 -0400, "KrisHur"
wrote: A scam. He claims it solves everything from barking to epilepsy--what trash. Science proves his claims are false: http://www.wirebird.com/bordercollie/doright.html This is not "science" as I know of it. But I'm not a scientist. Maybe a scientist would like to comment on the link above. Does it prove anything? Charlie |
#8
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Charlie Wilkes wrote in message . ..
More a priori science. Rocks can't fall from the sky, right? In all fairness, Charlie, those calculations are easily verified, and have been re-checked independently. I believe it's a very valid argument against the claims of how the device works physically. That's quite different from a scientific test of the claimed results of the device. But that's what you've been planning to test, isn't it? It's certainly something that we'd all like to see done. I'm certainly more interested in verifiable results than the science behind it and have no doubt that Mr. Howe doesn't really have the scientific background to present the acoustic information accurately, so will cut him some slack. Lynn K. I have been busy earning my living, but my hope is that I can get back to the cat shelter next week and continue my preparations for some genuine research. Charlie This is WHY it cannot work: "After reading the web page for Jerry Howe's "little black box" and doing a couple of calculations, I have demonstrated that the claims for "Doggy Do Right" are physically impossible. Specifically, it cannot possibly be audible to dogs at the ranges claimed. The essence of the reason is that attenuation of sound traveling through the air is not uniform for all frequencies, but is strongly frequency-dependent. The higher the frequency, the more rapid the attenuation. Basically, the reason for this is that higher frequencies require more rapid motion of the gas molecules which transport the sound. More energy is used accelerating the molecules at higher frequencies, causing more rapid attenuation (loss of signal). The "Doggy Do Right" is claimed to be ultrasonic, i.e., to work by means of very high frequency sound. Interestingly enough, the effect is not so pronounced in the frequency ranges of typical human speech, music, etc. but can be observed. When your neighbors, or passing motorists, play their stereos very loudly, typically you hear only the bass, because the higher-frequency treble is much weaker at any distance. When I was doing my postdoctoral research in atmospheric physics at the Naval Research Laboratory in Washington, DC, I used an acoustic levitator which pumped out many watts of sound at 33 kHz--an ultrasonic frequency, i.e. above the range of human hearing. I was interested in applying to raise a CCI assistance-dog puppy at that time, and was concerned about the effect of all of that noise (many, many times the human pain and damage thresholds, except mercifully silent to humans). 33 KHz is within the canine hearing range. To try to shorten a long story, both theory and measurements showed the sound to be so rapidly attenuated that if the puppy remained by my desk it would be unable to hear the ultrasonic source 18 feet away. The equation for sound attenuation as perceived by a measurement device (or a dog) at some distance r (measured in meters) from a point source, at room temperature, is I(source)*exp{-2E-13*(f^3)*r} I(dog) = ------------------------------ 4 * pi * r^2 where r is the distance from the source to the dog; I(source) is the intensity (power) output at the source; I(dog) is the intensity at the dog, f is the frequency of the sound, and pi is the numerical constant pi, approximately 3.14159265. This information may be found in almost any textbook on acoustics, but we found it in "Sonics" by TF Hueter and RH Bolt, Wiley and Sons, 1955. Plugging in the frequency of 33 kHz replicated our measurements almost exactly. So what does all of this imply for "Doggy Do Right"? It is claimed to be "ultrasonic," meaning it must use frequencies above the range of human hearing. We don't know if it emits a continuous monotone or some varying pattern of frequencies, but it does not make any difference for this demonstration. The range of human hearing is generally reported to be 20-20,000 Hz (20 Hz - 20 kHz). Thus, in order to be "silent to humans," as is claimed on the "Doggy Do Right" web page, the frequency, or range of frequencies, used must be 20 kHz or higher. The greatest possible range would be obtained with the lowest possible frequency, 20 kHz. Substituting this in for frequency in the equation given above, we find that at room temperature the range of the device is far less than the 500 ft claimed on the web site. It is less than 100 feet. I won't give the exact figure here, since it would be too easy for Jerry Howe to simply adjust his claims to fit these results. Anyone with a scientific calculator can repeat my calculation. I will mention, however, that the range is so short that the device's claimed ability to be heard by a dog across the street would not work in most neighborhoods, with typical street widths and zoning (set back from street) ordinances. If the frequency or frequencies used are higher than 20 kHz, and/or the temperature is lower than "room temperature" (which to physicists is about 77 Fahrenheit), the range will be even less. For the purpose of the range calculation, I assumed that attenuation of 120 dB, or twelve orders of magnitude, would render the device inaudible. This is the range in power between the human threshold of hearing (minimum) and threshold of pain (maximum). While some believe that dogs have a lower threshold of hearing than humans, that only applies, if at all, within the range of best canine hearing, not at 20 kHz and above. For anyone who has read this far, my personal favorite line from the Doggy Do Right web site is, "if you can hear barking dogs, they can hear Doggy Do Right." My husband John, who has over 90% hearing loss, can hear our hound Jobe (a.k.a. Ch. Gr. Nite. Ch. WC 'PR' Susquehanna Vally Jobe) at distances over 2 miles, in the cold of winter. At that range, at room temperature, the Doggy Do Right would be attenuated over 300 orders of magnitude. |
#9
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Charlie Wilkes wrote in message . ..
More a priori science. Rocks can't fall from the sky, right? In all fairness, Charlie, those calculations are easily verified, and have been re-checked independently. I believe it's a very valid argument against the claims of how the device works physically. That's quite different from a scientific test of the claimed results of the device. But that's what you've been planning to test, isn't it? It's certainly something that we'd all like to see done. I'm certainly more interested in verifiable results than the science behind it and have no doubt that Mr. Howe doesn't really have the scientific background to present the acoustic information accurately, so will cut him some slack. Lynn K. I have been busy earning my living, but my hope is that I can get back to the cat shelter next week and continue my preparations for some genuine research. Charlie This is WHY it cannot work: "After reading the web page for Jerry Howe's "little black box" and doing a couple of calculations, I have demonstrated that the claims for "Doggy Do Right" are physically impossible. Specifically, it cannot possibly be audible to dogs at the ranges claimed. The essence of the reason is that attenuation of sound traveling through the air is not uniform for all frequencies, but is strongly frequency-dependent. The higher the frequency, the more rapid the attenuation. Basically, the reason for this is that higher frequencies require more rapid motion of the gas molecules which transport the sound. More energy is used accelerating the molecules at higher frequencies, causing more rapid attenuation (loss of signal). The "Doggy Do Right" is claimed to be ultrasonic, i.e., to work by means of very high frequency sound. Interestingly enough, the effect is not so pronounced in the frequency ranges of typical human speech, music, etc. but can be observed. When your neighbors, or passing motorists, play their stereos very loudly, typically you hear only the bass, because the higher-frequency treble is much weaker at any distance. When I was doing my postdoctoral research in atmospheric physics at the Naval Research Laboratory in Washington, DC, I used an acoustic levitator which pumped out many watts of sound at 33 kHz--an ultrasonic frequency, i.e. above the range of human hearing. I was interested in applying to raise a CCI assistance-dog puppy at that time, and was concerned about the effect of all of that noise (many, many times the human pain and damage thresholds, except mercifully silent to humans). 33 KHz is within the canine hearing range. To try to shorten a long story, both theory and measurements showed the sound to be so rapidly attenuated that if the puppy remained by my desk it would be unable to hear the ultrasonic source 18 feet away. The equation for sound attenuation as perceived by a measurement device (or a dog) at some distance r (measured in meters) from a point source, at room temperature, is I(source)*exp{-2E-13*(f^3)*r} I(dog) = ------------------------------ 4 * pi * r^2 where r is the distance from the source to the dog; I(source) is the intensity (power) output at the source; I(dog) is the intensity at the dog, f is the frequency of the sound, and pi is the numerical constant pi, approximately 3.14159265. This information may be found in almost any textbook on acoustics, but we found it in "Sonics" by TF Hueter and RH Bolt, Wiley and Sons, 1955. Plugging in the frequency of 33 kHz replicated our measurements almost exactly. So what does all of this imply for "Doggy Do Right"? It is claimed to be "ultrasonic," meaning it must use frequencies above the range of human hearing. We don't know if it emits a continuous monotone or some varying pattern of frequencies, but it does not make any difference for this demonstration. The range of human hearing is generally reported to be 20-20,000 Hz (20 Hz - 20 kHz). Thus, in order to be "silent to humans," as is claimed on the "Doggy Do Right" web page, the frequency, or range of frequencies, used must be 20 kHz or higher. The greatest possible range would be obtained with the lowest possible frequency, 20 kHz. Substituting this in for frequency in the equation given above, we find that at room temperature the range of the device is far less than the 500 ft claimed on the web site. It is less than 100 feet. I won't give the exact figure here, since it would be too easy for Jerry Howe to simply adjust his claims to fit these results. Anyone with a scientific calculator can repeat my calculation. I will mention, however, that the range is so short that the device's claimed ability to be heard by a dog across the street would not work in most neighborhoods, with typical street widths and zoning (set back from street) ordinances. If the frequency or frequencies used are higher than 20 kHz, and/or the temperature is lower than "room temperature" (which to physicists is about 77 Fahrenheit), the range will be even less. For the purpose of the range calculation, I assumed that attenuation of 120 dB, or twelve orders of magnitude, would render the device inaudible. This is the range in power between the human threshold of hearing (minimum) and threshold of pain (maximum). While some believe that dogs have a lower threshold of hearing than humans, that only applies, if at all, within the range of best canine hearing, not at 20 kHz and above. For anyone who has read this far, my personal favorite line from the Doggy Do Right web site is, "if you can hear barking dogs, they can hear Doggy Do Right." My husband John, who has over 90% hearing loss, can hear our hound Jobe (a.k.a. Ch. Gr. Nite. Ch. WC 'PR' Susquehanna Vally Jobe) at distances over 2 miles, in the cold of winter. At that range, at room temperature, the Doggy Do Right would be attenuated over 300 orders of magnitude. |
#10
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Charlie Wilkes wrote: More a priori science. Rocks can't fall from the sky, right? I have been busy earning my living, but my hope is that I can get back to the cat shelter next week and continue my preparations for some genuine research. Charlie On Sat, 06 Sep 2003 18:18:05 GMT, Ed Williams "edwilliams REMOVE wrote: Randi Helene Tillung wrote: Hi! I am new here Can anyone tell me what the DDR Machine is, please? Randi Helene Randi, The DDR machine cannot work as claimed. (some of jerrys wacky claims are at the end of this post) This is WHY it cannot work: "After reading the web page for Jerry Howe's "little black box" and doing a couple of calculations, I have demonstrated that the claims for "Doggy Do Right" are physically impossible. Specifically, it cannot possibly be audible to dogs at the ranges claimed. snipped The whole concept that people seem to be MISSING here is that YOU DON'T HAVE TO BE ABLE TO HEAR A SOUND FOR IT TO HAVE AN EFFECT!!! Sub-audible beat frequencies can affect brain waves. So can strobe lights. Did you know that strobe lights can also alter brain waves and have been known to trigger seizures? http://www.siumed.edu/neuro/epilepsy...eizuresjs.html I've had some interesting meditational experiences using a sub-audible beat frequency tape, (I hear nothing) designed to alter brain waves to the level for astral travel. While I don't know if I have ever actually accomplished that act, I had some amazing dreams. ;-) Dick Sutphen has experimented with this concept on humans. There are temper control tapes out there that also use the same concept. Those worked on me. I am now more even tempered than I was before using them for a number of months several years ago. You don't have to hear it for it to work. The frequency used is determined by what "state" you want the brain to work in. Alpha waves etc. Here are some interesting links that I googled: http://serendip.brynmawr.edu/bb/neur...klafrance.html http://healingsounds.com/articles/ne...nd-healing.asp http://www.mindcontrolforums.com/p/brain_1.htm K. |
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