Active Noise Cancellation Device

[James Hill]

Hello

I'm after someone who can make an "Active Noise Cancellation Device".

If you're that someone and would like some extra cash please contact
me at jhill1000@yahoo.co.uk.

Thanks
James

 

[Rich Grise]

On Tue, 16 Nov 2004 08:21:25 -0800, James Hill wrote:

Hello

I'm after someone who can make an "Active Noise Cancellation Device".

If you're that someone and would like some extra cash please contact
me at #########@#####.###

Do you have a government research grant? 'Cause according to the
thread a couple of months ago, that's about what it will cost.
Just coming up with a parameter set is a major undertaking.

Good Luck!
Rich

 

[James Meyer]

On 16 Nov 2004 08:21:25 -0800, jhill1000@yahoo.co.uk (James Hill) wroth:

Hello

I'm after someone who can make an "Active Noise Cancellation Device".

If you're that someone and would like some extra cash please contact
me at jhill1000@yahoo.co.uk.

Thanks
James

Active noise cancellation works only in very specific situations. It
isn't a magic solution to any random noise problem.

Why don't you tell the group what you want to accomplish?

Jim

 

[James Hill]

Rich Grise <rich@example.net> wrote in message news:<pan.2004.11.16.16.08.17.238108@example.net>...

On Tue, 16 Nov 2004 08:21:25 -0800, James Hill wrote:

Hello

I'm after someone who can make an "Active Noise Cancellation Device".

If you're that someone and would like some extra cash please contact
me at #########@#####.###

Do you have a government research grant? 'Cause according to the
thread a couple of months ago, that's about what it will cost.
Just coming up with a parameter set is a major undertaking.

Good Luck!
Rich

Thank you for your interest.

This "Active Noise Cancellation Device" would be for illustration
purposes so it would not need be to of a particularly high standard.

I have the schematics for this device which need some minor
modifications.

Please contact me if you would like to make this device.

James

 

[Joel Kolstad]

"James Hill" <jhill1000@yahoo.co.uk> wrote in message
news:20207174.0411161705.5f4df5f6@posting.google.com...

I have the schematics for this device which need some minor
modifications.

These are famous last words! They fall into the same category as folks who
have perpetual motion machines that are complete other than a few 'minor
modifications' remaining!

 

[Guy Macon]

James Hill wrote:

I'm after someone who can make an "Active Noise Cancellation Device".

If you're that someone and would like some extra cash please contact

....

This "Active Noise Cancellation Device" would be for illustration
purposes so it would not need be to of a particularly high standard.

I have the schematics for this device which need some minor
modifications.

Please contact me if you would like to make this device.

Read this:

How To Ask Questions The Smart Way
http://www.catb.org/~esr/faqs/smart-questions.html

 

[Pig Bladder]

On Wed, 17 Nov 2004 08:35:05 +0000, Guy Macon wrote:

James Hill wrote:

I'm after someone who can make an "Active Noise Cancellation Device".

If you're that someone and would like some extra cash please contact

...

This "Active Noise Cancellation Device" would be for illustration
purposes so it would not need be to of a particularly high standard.

I have the schematics for this device which need some minor
modifications.

Please contact me if you would like to make this device.

Read this:

How To Ask Questions The Smart Way
http://www.catb.org/~esr/faqs/smart-questions.html

Hey, Guy! How are you and Dave enjoying your mutual admiration
society?

I already told him I'd do it for a grand, but he whimped out. Whatta
maroon.

Ach, well, c'est fromage.

Peace,
The Pig Bladder from Uranus, still waiting for some hot babe to
ask me what my favourite planet is.

 

[onyx]

Active noise cancellation works only in very specific situations. It
isn't a magic solution to any random noise problem.

Why don't you tell the group what you want to accomplish?

Jim

Most "engineering solutions" embody some sort of bandwidth limitations.
Of course, the lower the frequency, the easier the solution.
Especially if working in the audio range i.e. up to 20 KHz lets say.

Noise cancellation in the RF range, even low RF 1MHz for example is
more difficult. I am guessing (no "assuming") that higher RF freqs
2.4 GHz 5.8 GHz are beyond the scope of your problem.


Dave