Breaking News
Comments
Newest First | Oldest First | Threaded View
old account Frank Eory
User Rank
Rookie
re: Wireless audio distribution - the last 30 meters
old account Frank Eory   10/13/2010 5:37:31 PM
NO RATINGS
As the author points out, it's much easier to find 3 MHz of available spectrum in an ISM band than it is to find 20+ MHz. Yet even with the 20+ MHz needed for 802.11g or the 40 MHz needed for 802.11n, hundreds of millions of WiFi users are able to make their WiFi devices work, despite sharing the same spectrum -- with other WiFi users as well as with Bluetooth, Zigbee, cordless phones, baby monitors, etc. The argument that tomorrow may bring a wireless application that is more beneficial is, in my opinion, a good argument for allocating even more spectrum for unlicensed ISM use -- not an argument for limiting ISM use to only those standards that are already established (WiFi, Bluetooth, etc.). As for copy protection concerns, that is a good subject for an entirely different discussion about analog vs. unencrypted digital vs. encrypted digital content and the DMCA law...and why copying for personal use is permitted for the first two types of content, but not for the third (encrypted).

WKetel
User Rank
Rookie
re: Wireless audio distribution - the last 30 meters
WKetel   10/6/2010 10:34:39 PM
NO RATINGS
The reason for not using up all of the spectrum today is that tomorrow something much more useful may arrive that would benefit us a lot more than not having to run speaker wires. That is one reason. Next, consider that these wireless systems offer no protection from interference by other systems using the same frequencies. Beyond that, there is an interesting realm of copying concern, if we have a digital transmission of some copy protected program, and the transmitted version is not copy protected, we have just defeated the "copy police". I admit that is a stretch, but it could get some folks excited. To repeat myself, when the spectrum is all used up, it is gone, and they aren't making spectrum any more.

t.alex
User Rank
Rookie
re: Wireless audio distribution - the last 30 meters
t.alex   10/2/2010 12:24:04 AM
NO RATINGS
Wketel, if the spectrum is available, why not use it?

WKetel
User Rank
Rookie
re: Wireless audio distribution - the last 30 meters
WKetel   9/29/2010 7:15:40 PM
NO RATINGS
While there might actually be some value in wireless audio, using it just to avoid running wires is a terrible waste of spectrum. Remember that there is only so much spectrum, and when it is full there is no more room, and something loses. So yes, it is neat to be able to do this, but it does constitute a waste of spectrum.

t.alex
User Rank
Rookie
re: Wireless audio distribution - the last 30 meters
t.alex   9/26/2010 12:12:07 AM
NO RATINGS
Besides the issues covered by the article, I think the number of audio streams supported is important as well. In home theatre system, the left and the right speak play different contents.

old account Frank Eory
User Rank
Rookie
re: Wireless audio distribution - the last 30 meters
old account Frank Eory   9/23/2010 8:07:48 PM
NO RATINGS
Great article, nicely covering the major issues of wireless digital audio distribution. I'm looking forward to trying out an SMSC-powered set of wireless speakers.



Most Recent Comments
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

Energizing the Young Engineers of Tomorrow
Max Maxfield
8 comments
It doesn't seem all that long ago when I was a bright-eyed, bushy-tailed young engineer. Now I feel like an old fool, but where are we going to find one at this time of the day (LOL)?

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 ...