Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

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KMN
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Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by KMN » Sun May 26, 2019 4:41 pm

Kind of like divine archive of knowledge this website is completely caked with amazingly instructive circuit descriptions and discussions of all manner of wonderful audio circuit topology, and these really unique schematics in the always recognizable hand drawn but easily readable style of this sites owner/creator and their always present ominous accompanying copyright warnings.

Can I use circuits I may never have come up with, which may even be very very close in implementation to those I learned from discussions and circuits shown here, often accompanied by said ominous copyright warnings?

Our site Owner/Host, Mr Wayne Kirkwood, you showed me how to do what seems like the best LF vertical filter concept I've heard of yet. You even linked me to all your discussions where you optimized your approach.

I'm a believer, plain and simple. I even sat there with some LTspice simulations for a while to convince myself. Yep, I agree your way is best I've seen. I believe it accomplishes everything I ever wanted and maybe more..... And, btw I still plan to get back to that software plugin thing, I spoke of, real soon, hopefully.

Problem is when I met you, that software filter, you and I chatted about, was just my current ADD tangent of the week, I was temporarily fixated on, that ended up distracting me from a phono front end project I had already been working before that. When I realized I wasn't going to be able to cough out the DSP vertical removal tool in a week or two I ended up dropping it with plans to return to it later.

Now I'm getting pretty into doing the Kicad layout for one of my more promising looking my MC front end first proto...btw it's a many transistor-ed, full balanced high symmetry pnp LTP's w/ current source, low impedance feedback, hum bucked L in the Rg leg, dual servo'd (maybe a 1mHz HPF or something like that) , etc.sort of a tweaked high performance ripoff of Cambridge's 640P MC front end that sort of reminds me of an over complicated alter ego dark side version of your MC front end, but it also seems to simulate pretty well. The ZTX951's I learned about from discussions here and allowed me get away from having multiple paralleled bjt''s, were a revelation not to mention the talks thermal drift etc.

At any rate I want to build this front end.

Man, considering my front ends ultra low fc HPF/servo circuit, some LF noise filtering sure would be nice.

I want to use a slightly tweaked version of a circuit utilizing that LF vertical filtering technique you showed me, Wayne, among other more traditional sub sonic filtering circuits from elsewhere. Are your lawyers going to track me down? How does that work.

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mediatechnology
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Re: Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by mediatechnology » Mon May 27, 2019 4:40 am

Thanks for the kind words.
Kevin its the drawings and PCB layouts that are copyrighted not the ideas or circuits which become public domain.
You're not dealing with Walt Jung here.

I can't tell you how many times I have been asked by someone about using a circuit or design and said yes.
If it were a commercial product I usually ask for attribution.
Here's an example: https://tkaudio.se/portfolio-items/tk-lizer-2/

Here's an example of one that I believe was stolen from me who didn't ask: https://patents.google.com/patent/US823 ... +8233643B1

Kevin I've been on the side of the fence that you think you might be on:
https://scholar.google.com/scholar_case ... 0000000002
https://proaudiodesignforum.com/forum/p ... te+control
https://proaudiodesignforum.com/forum/p ... f=12&t=280
https://ka-electronics.com

Tommy Robinson Sentenced to Nine Months in Prison: https://www.breitbart.com/europe/2019/0 ... sentenced/
Facebook Sanctions Violent Threats Against ‘Dangerous Individuals’: https://www.breitbart.com/tech/2019/07/ ... dividuals/
The Most Banned Network In The World: https://www.infowars.com/show

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JR.
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Re: Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by JR. » Mon May 27, 2019 9:20 am

mediatechnology wrote:
Mon May 27, 2019 4:40 am
Thanks for the kind words.
Kevin its the drawings and PCB layouts that are copyrighted not the ideas or circuits which become public domain.
You're not dealing with Walt Jung here.
:lol:
I can't tell you how many times I have been asked by someone about using a circuit or design and said yes.
If it were a commercial product I usually ask for attribution.
Here's an example: https://tkaudio.se/portfolio-items/tk-lizer-2/
pay it forward, we all started ignorant and had some mentoring along the way.
Here's an example of one that I believe was stolen from me who didn't ask: https://patents.google.com/patent/US823 ... +8233643B1
I don't recall that story, but do recall a fixed instal product back last century where signal was carried on top of a DC power fed to speakers for background music. As i recall these were pretty modest power levels using small IC power amp chips at each speaker. The product didn't get much traction because was not as cheap as existing constant voltage (70-100V) systems, and that industry needs a strong motivation to fix something that isn't broken. :lol:
Just do it... with some honor... Many of us have had intellectual property "borrowed".

JR
Visit https://circularscience.com to hear what properly "cleared" drums sound like.

Audio1Man
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Re: Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by Audio1Man » Mon May 27, 2019 12:35 pm

Hi KMN
I don’t have a problem building patent ideas or Copyright and verifying that it will work in my application. I have not used patent ideas or Copyright for production products without paying a royalty.

As JR said “pay it forward, we all started ignorant and had some mentoring along the way.”

I have had several ideas that were patent by company I worked for and some I consulted for, others I failed to file for.
My first real job was as a junior engineer I worked in the microwave business and the N type switch was limited to 5kMz where the VSWR was 1.05. I looked @ it and told my 30+ year older mentor why not change the way the RF switch is built, he said make up a drawing and we will get it made. The performance was improved to >8kMz and VSWR @1.05. It was patent and I received a great bonus.

I had a client ask me to solve a problem and then build a prototype. I did and he took it and filed a patent as his own and I did not get any credits and poor pay. That was the last time I worked for him.
Duke

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JR.
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Re: Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by JR. » Mon May 27, 2019 2:20 pm

Audio1Man wrote:
Mon May 27, 2019 12:35 pm
Hi KMN
I don’t have a problem building patent ideas or Copyright and verifying that it will work in my application. I have not used patent ideas or Copyright for production products without paying a royalty.

As JR said “pay it forward, we all started ignorant and had some mentoring along the way.”

I have had several ideas that were patent by company I worked for and some I consulted for, others I failed to file for.
My first real job was as a junior engineer I worked in the microwave business and the N type switch was limited to 5kMz where the VSWR was 1.05. I looked @ it and told my 30+ year older mentor why not change the way the RF switch is built, he said make up a drawing and we will get it made. The performance was improved to >8kMz and VSWR @1.05. It was patent and I received a great bonus.

I had a client ask me to solve a problem and then build a prototype. I did and he took it and filed a patent as his own and I did not get any credits and poor pay. That was the last time I worked for him.
Duke
Arguably "work for hire" inventions are property of the employer, but plenty of gray area and best negotiated before the fact, rather than after.

I have met and worked with scumbag businessmen before, one I even had to threaten lawsuit before he paid me what he owed me. That was a funny story looking back on it (not so funny at the time). I was so ticked off that I hired a lawyer, paid him straight time (no contingency), and authorized him to sue... when the sleazeball businessman tried to negotiate with my lawyer over the phone my lawyer shared than he was already authorized to sue, and he said he heard the guy's butthole snap shut over the phone. He was apparently stringing along multiple vendors the same way as me, and one lawsuit would have created a feeding frenzy among all the people he owed money to. I got 100% of what I was asking for on the spot, then I refused to work with him in the future. The product I was responsible for needed a circuit re-design due to an obsolete key component, so bye-bye product.

Since my lawyer settled the matter with one phone call he asked me for a bonus, and I reminded him I hired him straight time and would have paid him win or lose. 8-) Then I took him out for a celebratory dinner at a nice restaurant.

Karma works... I later heard that the same sleazebag business man ended up in jail for trying to cheat his business partners. :lol:

JR
Visit https://circularscience.com to hear what properly "cleared" drums sound like.

KMN
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Re: Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by KMN » Mon May 27, 2019 4:23 pm

Maybe something like having~ 3-5 boards fab'd, build up one or two, let er rip and see how it sounds? I mostly just want one. I was thinking I maybe I could make the one bitchen vinyl ripping rig to eclipse all others.

Wayne you've been very gracious with your wealth of knowledge and hosting the website. I'd be absolutely proud to promote the influence of your input and the site, even pay royalty were it appropriate, try to do it right..... Especially should I ever figure it was worthwhile to go into commercialized manufacture of record player electronics...:D Maybe we will all be rich!

Thank you everybody all of these responses were very helpful

KMN
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Re: Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by KMN » Mon May 27, 2019 5:52 pm

By the way. That voice forwarding technology "scandal"/ tale, I don't mean to make light of it, but that is some really great reading. Kind of x-files like. I am sure it must have been a quite a hassle indeed! I don't think I would not have enjoyed it at all.

Whenever you are ready to stage the ham/audio/comms electronics freedom stand just say the word!

Audio1Man
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Re: Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by Audio1Man » Mon May 27, 2019 9:51 pm

Hi JR

As JR Said Arguably "work for hire" inventions are property of the employer, but plenty of gray area and best negotiated before the fact, rather than after.

I did have an agreement prior to starting, however I made & sent the project before all of the paperwork was sent back to me, so it was my problem.
Duke

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JR.
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Re: Pro Audio Design Forum taught me all I know, can I build anything without getting sued?

Post by JR. » Mon May 27, 2019 11:38 pm

Audio1Man wrote:
Mon May 27, 2019 9:51 pm
Hi JR

As JR Said Arguably "work for hire" inventions are property of the employer, but plenty of gray area and best negotiated before the fact, rather than after.

I did have an agreement prior to starting, however I made & sent the project before all of the paperwork was sent back to me, so it was my problem.
Duke
Lets hope karma got him too....

JR
Visit https://circularscience.com to hear what properly "cleared" drums sound like.

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