One major problem that has been taking wireless speakers is interference from other devices. In this post, I will show you how different products deal with this issue.
Almost every wireless speaker operates in one of the frequency bands which is allocated for unlicensed equipment. That is fairly logical since people don’t want to apply for license before being able to use the product. For example, Amphony speaker products work in the 2.4 GHz and 5.8 GHz frequency range. In addition, in the United States then 900 MHz frequency band is fairly popular.
Unfortunately, the frequency space which is available within each of these three common frequency bands is fairly limited. Modern wireless speakers utilize data transmission. Data transmission requires more bandwidth then classic analog wireless models. Further, the higher the bit rate of the signal, the higher the required band with. Since these three frequency bands are also being utilized by other wireless devices such as garage door openers, cordless telephones and walkie-talkies, it is easy to imagine that these frequency bands can become saturated fairly quickly. That is especially true in urban environments where you have many people concentrate within a small amount of space watt using all sorts of wireless gadgets.
It is not easy to combat signals coming from other devices such as wireless routers and cordless telephones. For example, let’s imagine that you pick a frequency channel carefully. Smart wireless speakers would scan the frequency space which is available and find out which channels are being utilized by other equipment. Then they would avoid those frequency channels in order to minimize interference from those other devices as well as to those devices. Unfortunately, there are many frequency-hopping devices on the market. Those devices do not restrict themselves to one specific frequency band but instead of throughout the entire frequency space.
That means regardless of what channels you pay, you will always experience some amount of interference is soon as those products will occupy your frequency channel. The good news, however, is that those frequency hopping products only occupy any specific frequency for short amount of time. That will enable you to use data buffering in order to combat such interference. There buffering is done within the transmitter and wireless speakers. By using buffering, often data which is corrupted can be recovered.
As they are more devices being launched, and other technologies fairly common. This technology uses acknowledgments which are sent from the speakers back to the transmitter. That way the transmitter can re-send data which has been corrupted or lost during the transmission.