Re: Re: Clean vs Dirty Square Wave

[Guest guest]

Thanks for sound card info. Isn't there less distortion for lower

frequencies with a sound card? Truer square wave is generated at low

frequencies?

Thanks

Dan

Re: Clean vs Dirty Square Wave

>

> Bruce K. Stenulson wrote:

> <snip>

> > I've observed these erratic 'square wave' waveforms first on a newer

> > ASUS A7N8X-E motherboard system, which integrates the NVIDIA nfource 2

> > APU to produce it's audio output. I next ran the tests and saw exactly

> > the same distorted square wave output waveforms on a Creative Labs PCI

> > Soundblaster Live! MP3 sound card in another of my computers. My

> > assessment from tests of these two systems is that the FREX12 / Freqgen

> > square wave output is unsuitable for my purposes, (and likely also

> > unsuitable for other people's purposes.)

> >

> <snip>

>

>

> When I did some tests a while back, I found that the fancy new sound

> cards such as the SoundBlaster Live and Audigy did not put out a clean

> basic sine wave, but put out a series of sine waves that were phase

> shifted. The older and cheaper sound cards such as the AWE 64 Gold and

> the PCI 128 put out clean sine waves with no phase shifting. It seems

> to me that what is needed for sound card generated frequencies is just a

> basic two channel card, not the newer fancy cards. If you want square

> waves, use something like Ralph Hartwell's square wave converter:

> http://www.emachine.com/rifeindx.htm

>

> Regards,

>

>

>

>

[Guest guest]

My brother-in-law who is an EE tells me that no sound card can put out a good

square wave due to bandwidth issues.

Loyd http://www.royalrife.com

Re: Clean vs Dirty Square Wave

Bruce K. Stenulson wrote:

<snip>

> I've observed these erratic 'square wave' waveforms first on a newer

> ASUS A7N8X-E motherboard system, which integrates the NVIDIA nfource 2

> APU to produce it's audio output. I next ran the tests and saw exactly

> the same distorted square wave output waveforms on a Creative Labs PCI

> Soundblaster Live! MP3 sound card in another of my computers. My

> assessment from tests of these two systems is that the FREX12 / Freqgen

> square wave output is unsuitable for my purposes, (and likely also

> unsuitable for other people's purposes.)

>

<snip>

When I did some tests a while back, I found that the fancy new sound

cards such as the SoundBlaster Live and Audigy did not put out a clean

basic sine wave, but put out a series of sine waves that were phase

shifted. The older and cheaper sound cards such as the AWE 64 Gold and

the PCI 128 put out clean sine waves with no phase shifting. It seems

to me that what is needed for sound card generated frequencies is just a

basic two channel card, not the newer fancy cards. If you want square

waves, use something like Ralph Hartwell's square wave converter:

http://www.emachine.com/rifeindx.htm

Regards,

[Guest guest]

Thanks Bruce, , Al, Dan, and ,

I really appreciate your feed back.

I understand the need for a resonably clean square wave for plasma tube

work. My main interest is for electrode use. (us cheapies at the bottom)

At the moment, Frex doesn't touch the sound card, it just uses Fred's

FreqGen program. But I am now building Frex's own sound card management

system.

My problem! All computer sound card generated software on the market for

Rife work allows the user to select square wave. We all know the software

generated square wave is not very square, and has been termed, unsuitable

for Rife work. But still, the software vendors make this option available to

users, and users use it.

For my own peace of mind, I'll run some simple trials. I have regular access

to some people with arthritis in varying stages and types. I'll be able to

see how the two groups progress when using clean verse a dirty signal. This

should give me the right type of information on how to better construct Frex

to help people. I don't want a computer generated square wave in Frex if its

not going to be of any use, and only adds to confusion.

Regards

Ken

[Guest guest]

> My advice would be to not waste your time trying to generate a square

> wave with a sound card; what's the point in trying to make a square wave

> if it's impossible to make it square? On the other hand, you could also

> try sine waves compared to dirty square waves as part of your trials.

>

> Regards,

>

I'm not trying to make good square waves with the sound card, I just want to

know the difference between the sound cards dirty square wave verse a clean

square wave (hardware made).

The frequency distribution box that was built for me has a schmitt trigger

device in it to generate good square waves from the computers sound card

output like Alvin's convertor, be it sine or square coming from the sound

card.

So I have access to a very good square wave from the sound card. I want to

know what to be able to say to people who use Frex and can't afford a

hardware convertor, about the effectiveness of dirty square waves. Should I

really be pushing them to spend their money for a convertor to optimize the

results or say, hey, that dirty square wave coming out the sound card also

works well. Trials will let me know if there is any value in a dirty wave

form when compared to a crisp and clean wave form. If I do a trial, then

I'll have extra knowledge and will be in a better position to help people.

I feel abit uninformed not being able to correctly advise users about the

pros and cons of clean square waves verse dirty ones. I don't want to advise

people to part with their money if it is not necessary when electrodes are

the delivery system.

My attention has be brought to this issue because I received enough emails

from users that tell me they are experiencing good results with a dirty

signal. Can a clean square wave give them better performance and herx

reactions. I want to know this before I advise them to spend their money.

Electrodes also seem to be very popular with Lyme sufferors, I don't know if

this is a price thing or its the way electrodes work. I have never run Rife

frequencies through an electrode system, always the plasma so this is new

ground for me.

Regards

Ken Uzzell

[Guest guest]

Thanks Gordon,

I'm pretty happy with my B/R, although I can't hook Frex upto it because it

is intergrated with no external input.

The image on Jims site showed those spikes.

> Ken,

>

> A good square wave can be obtained by feeding a sine wave into a R/B

> modified device( i.e. well overmodulated) The square wave thus produced

has

> two long spikes at the leading edge of the envelop, a desirable effect in

> Rife work. I constructed several devices and when checked with the scope

> they all display this phenomena.

>

> Regards,

>

> Gordon

>

> > I understand the need for a resonably clean square wave for plasma tube

> > work. My main interest is for electrode use. (us cheapies at the bottom)

> >