Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
old account Frank Eory
User Rank
Author
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
Author
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
Author
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
Author
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
Author
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
Author
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.



Radio
NEXT UPCOMING BROADCAST
In conjunction with unveiling of EE Times’ Silicon 60 list, journalist & Silicon 60 researcher Peter Clarke hosts a conversation on startups in the electronics industry. One of Silicon Valley's great contributions to the world has been the demonstration of how the application of entrepreneurship and venture capital to electronics and semiconductor hardware can create wealth with developments in semiconductors, displays, design automation, MEMS and across the breadth of hardware developments. But in recent years concerns have been raised that traditional venture capital has turned its back on hardware-related startups in favor of software and Internet applications and services. Panelists from incubators join Peter Clarke in debate.
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
The LT®3042 is a high performance low dropout linear ...
Chwan-Jye Foo (C.J Foo), product marketing manager for ...
The LT®3752/LT3752-1 are current mode PWM controllers ...
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...