Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 4   >   >>
Max The Magnificent
User Rank
Blogger
Re: Double the price in Canada
Max The Magnificent   8/21/2014 9:43:42 AM
NO RATINGS
@cookiejar: While the 3M Peltor X-Series Over-the-Head Earmuffs sells for $25.01 on www.amazon.com in the U.S., in Canada on www.amazon.ca they sell for $53.50 which is over double the price. I'll stick with Bilsom.

Eeek -- I don't blame you!

cookiejar
User Rank
CEO
Double the price in Canada
cookiejar   8/20/2014 8:09:21 PM
NO RATINGS
While the 3M Peltor X-Series Over-the-Head Earmuffs sells for $25.01 on www.amazon.com in the U.S., in Canada on www.amazon.ca they sell for $53.50 which is over double the price. 

I'll stick with Bilsom.

Max The Magnificent
User Rank
Blogger
Re: Active noise cancellation
Max The Magnificent   8/20/2014 9:23:33 AM
NO RATINGS
@seaEE: Is there any headphone on the market that can cancel all external noise from 0 to 20kHz to a reasonable degree, or are the upper frequencies too difficult to cancel?

I've not seen anything, but if there is I want it!!!

Max The Magnificent
User Rank
Blogger
Re: Find a need and fill it. Find an irritant and suppress it.
Max The Magnificent   8/20/2014 9:22:49 AM
NO RATINGS
@Nimrod: This may be Max the Magnificent dressed up for Halloween (or ESC-Mardi Gras) with all possible wearable electronics.

So nothing different there, then :-)

Max The Magnificent
User Rank
Blogger
Re: Find a need and fill it. Find an irritant and suppress it.
Max The Magnificent   8/20/2014 9:22:01 AM
NO RATINGS
@Nimrod: ...headpones such that the driver can listen to whatever while the passengers sleep.

Not a good idea -- I want my driver to be highly caffinated and wide awake with all sensors (eyes, ears) operating at maximum efficiency.

seaEE
User Rank
CEO
Active noise cancellation
seaEE   8/19/2014 10:13:50 PM
NO RATINGS
The pair I bought several years ago are okay at canceling out airplane rumble, but not much else.  Is there any headphone on the market that can cancel all external noise from 0 to 20kHz to a reasonable degree, or are the upper frequencies too difficult to cancel?

 

 

NimrodO0l1
User Rank
Rookie
Re: Find a need and fill it. Find an irritant and suppress it.
NimrodO0l1   8/19/2014 6:08:53 PM
NO RATINGS
Forgot two aspects and just thought of a few more.

As with most NR headphones, you want to be able to play you own music.  I have seen products that suppress that signal when an outside signal is detected.  Fender in their Passport PAs calls in Priority Interrupt.   Sound on input 1 (usually from a mike) suppresses all of the other channels.   

A variation on this in the car would be having the car's voice be able to cut in as well. This would be selectable if the passenger did not need or want it.    Which leads to the next variation:  headpones such that the driver can listen to whatever while the passengers sleep.

I think I am getting close to a product that might be called Google Aureality.  (Always good to come up with the product name if you can.)

Eventually of course, this and those geeky Google Glass things will be miniaturized into chips to be implanted in the heads of the ultra-chic.    Actually, a few more shrinks and cell phones will actually be the size of cells.  tres efficient.

I was thinking of the phrase, Great Googlemy-Mooglely.  This may be Max the Magnificent dressed up for Halloween (or ESC-Mardi Gras) with all possible wearable electronics.

 

 

 

 

 

Max The Magnificent
User Rank
Blogger
Re: Find a need and fill it. Find an irritant and suppress it.
Max The Magnificent   8/19/2014 5:50:11 PM
NO RATINGS
@Nimrod: ...we may have a new product idea...

If you build it, I'll be your first customer :-)

Max The Magnificent
User Rank
Blogger
Re: Find a need and fill it. Find an irritant and suppress it.
Max The Magnificent   8/19/2014 5:49:25 PM
NO RATINGS
@NimrodO0I1: The NR headphones cannot filter out music from the environment without filtering out speech...

I could live with that LOL

NimrodO0l1
User Rank
Rookie
Find a need and fill it. Find an irritant and suppress it.
NimrodO0l1   8/19/2014 5:45:49 PM
NO RATINGS
I think that somewhere between the in-ear monitor and the 'normal' NR headphones, we may have a new product idea.    You want normal earmuffs to suppress as much 'noise' as possible.  You want NR headphones to reduce as much periodic noise as possible. The NR headphones can do better on low frequency periodic noise than ear muffs can.   Now, the trick:  The NR headphones cannot filter out music from the environment without filtering out speech.   What if we supply the music signal via another means, say a bluetooth connection from the car radio.   Now the DSP in the NR headphones can run an algorithm to get the 'average' delay of the sound from the speakers vs that from the Bluetooth signal. Key: The Bluetooth signal will arrive several milliseconds before the sound from the car speakers.   The DSP software should be able to then control the speakers in the NR headphones to cancel some or all of what comes from the speakers.  That is, you can adjust the volume down (if you just find it too loud) or cancel it.  This could work for some of the frequency bands at rock concerts.  This gets complicated with multiple speakers, but I bet it would work for two as long as you were not moving head too much.  Most importantly,  the regular NR function would allow other non-periodic sounds to get through.  Eg, requests from she who must be obeyed to open a can of caffeine so she can keep driving.  Or asking you too explain what you and her beautiful cousin were doing in that pirogue down on the bayou.

 

 

Page 1 / 4   >   >>


Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

The Best of the Best Videos on YouTube
Max Maxfield
4 comments
A couple of days ago, my chum Paul was visiting me in my office. He'd wandered over from his cubicle in the next bay to take a brief coffee break. This week, Paul had been admiring the ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...