Thread
:
anti noise
View Single Post
#
12
Posted to rec.woodworking
[email protected]
external usenet poster
Posts: 2,833
anti noise
On Sun, 29 Jan 2017 17:45:39 -0800 (PST), DerbyDad03
wrote:
On Sunday, January 29, 2017 at 4:45:14 PM UTC-5, wrote:
On Sat, 28 Jan 2017 20:27:28 -0800 (PST), DerbyDad03
wrote:
On Saturday, January 28, 2017 at 9:39:49 PM UTC-5, wrote:
On Sat, 28 Jan 2017 21:27:59 -0500, "J. Clarke"
wrote:
In article 12iq8c55slnivedgg69jjakin8g14s3fkp@
4ax.com,
says...
On Sat, 28 Jan 2017 13:55:23 -0800, Electric Comet
wrote:
i guess that shop noise from machines is mostly white noise
but with compute power as it is i wonder if it is possible
to sample the white noise and cancel fast enough so that i
cannot hear it
or at least cancel most of it by analyzing the predominant noises
based on previous samples
Yes it is possible.
I suppose that among the many other things of
which Electric Comet is unaware is that a major
audio manufacturer has noise cancelling headsets
in their third or fourth generation of
production, available off the shelf at Best Buy.
Auto manufacturers use anti-noise to change (reduce, increase, or
"enhance") engine noise. It's quite different than the **** headsets
you mention, though. It is a technology that a saw manufacturer
could, but is *highly* unlikey to, use.
Honda uses Active Noise Cancellation to mask the noise caused by the vibration that
occurs when the Variable Cylinder Management kicks in and shuts down the back 3
cylinders.
I installed a device to suppress the VCM so I don't have to deal with the vibration, the noise,
the lack of response, etc. The 2nd generation of Honda's VCM is supposed to be better, but
the earlier version that I have both sucks for the driver and is bad for the engine.
I'm not familliar with that particular unit but ANC isn't just a
matter of masking the noise when VCM kicks in.
I don't recall ever saying it was.
"Honda uses Active Noise Cancellation to mask the noise..."
There is anti-noise
added to lower overall noise in some models. In others (not
necessarily Honda), it's there to make it sound like a muscle car. ;-)
Reply With Quote
[email protected]
View Public Profile
Find all posts by
[email protected]