Ghz Wireless

Helpful Hints For Finding The Perfect Wireless Audio Transmitter Product For Whole-Home Audio Streaming
A growing number of wireless audio transmitter devices claim the ultimate freedom in streaming music all over the house. We will look at different products and technologies to find out in how far these products are useful for whole-house audio applications and what to look out for when buying a wireless system.
Running audio in your house can be a daunting undertaking. A lot of houses are not wired for multi-room audio and getting the music from your living room to your bedroom can be quite a challenge. There are a number of technologies solving this problem. These include infrared wireless, RF wireless, wireless LAN (WLAN) and powerline.
Infrared wireless audio devices are limited to line-of-sight applications, i.e. only operate within a single room because the signal is sent as infrared light which cannot penetrate walls. This technology is frequently found in wireless speaker kit products.
RF wireless products will send the signal as RF waves. These waves can without problems go through walls. RF wireless audio products either utilize FM transmission or digital audio transmission. FM transmitters are the least expensive option. They provide decent range but the music signal is prone to audio distortion and noise and is very susceptible to interference from other wireless transmitters.
Digital wireless audio transmitter devices, such as products from Amphony, utilize a digital protocol. The audio is first converted to digital data before being broadcast. This conversion and transmission in the digital domain will guarantee that the original audio quality is maintained. On the other hand, this is only the case of the data is sent uncompressed. Some wireless audio transmitters will apply some sort of audio compression. Such products include Bluetooth audio transmitters. Audio compression will degrade the quality of the audio to some degree.
Products using wireless LAN are useful when streaming audio from a PC. Their drawback is that they usually have some fairly high latency, i.e. the signal will be delayed by some amount since wireless LAN was not particularly designed for real-time audio streaming. WLAN receivers usually require purchasing a separate LAN card to be plugged into each receiver.
Powerline devices utilize the power mains to distribute music and offer great range but run into problems if there are individual mains circuits in the house in terms of crossing between circuits. Powerline products have another problem in the form of power surges and spikes which can cause transmission errors. To avoid audio dropouts, these products will generally have an audio latency of several seconds as a safeguard.
Here are some recommendations for choosing a wireless audio system: If you plan to stream audio into numerous rooms of your home, be sure to select a system that permits streaming to several receivers at the same time. That way you don’t have to buy a separate transmitter for every receiver that you are streaming to. Products with some type of error correction will be more resistant against radio interference from other wireless transmitters. Pick a digital RF transmitter to maintain the original audio quality, ideally one with an audio latency of less than 10 ms in case of video or other time-sensitive applications.
Pick a transmitter that has all of the audio inputs you require, e.g. speaker inputs, RCA inputs etc. Get a wireless system where you can buy additional receivers later on. You should confirm that you can get receivers for all the different applications you have. Such receivers may include amplified receivers for passive speakers or line-level receivers for active speakers. If you go with a digital audio transmitter, select one with an input audio level control knob to prevent the music signal from clipping inside the transmitter audio converter. This will ensure optimum dynamic range regardless of the signal level of your equipment.
Make sure that the system offers amplified receivers with a digital amplifier to ensure high power efficiency. This will help keep the receiver cool during operation. Also, make sure the amplifier provides low audio distortion. This is vital for good sound quality. Make sure the receivers can drive speakers with your preferred Ohm rating. Choosing a product where the wireless receivers have a small footprint and easy mounting options will help in the course of the set up. Products using the less crowded 5.8 GHz frequency band will typically have less problems with wireless interference than 900 MHz or 2.4 GHz products.
First Look: Astro Gaming A40 Wireless Audio System
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