Ghz Wireless
Recommendations For Picking The Best Wireless Audio Transmitter Product For Whole-Home Audio Streaming
The newest series of wireless audio transmitter devices claims streaming of music throughout the home without limits. We will look at various products and technologies to find out in how far these devices are practical for whole-house audio applications and what to look out for when purchasing a wireless system.
Running music in your home can be a intimidating job. Many homes are not wired for multi-room audio and getting the music from your living room to your bed room can be quite a challenge. Devices which resolve this challenge are mostly based on the following technologies: infrared wireless, RF wireless, wireless LAN or powerline.
Infrared wireless audio devices are limited to line-of-sight applications, i.e. only function within a single room since the signal is broadcast as infrared light which can’t penetrate walls. This technology is frequently found in wireless speaker kit products.
RF wireless audio products send the audio signal via radio waves. These radio wave signals can without problems go through walls. The signal is sent either by using FM transmission or digital transmission. FM transmission is economical but rather prone to static, audio distortion and susceptible to interference.
Products using digital wireless audio transmission, such as Amphony audio transmitter products, utilize a digital protocol in which the audio is converted to a digital signal before transmission. Some wireless audio transmitters will use audio compression, such as Bluetooth transmitters which will lower the audio quality to some degree. Digital wireless audio transmitters which send the audio uncompressed offer the highest audio fidelity.
Wireless LAN (WLAN) products are useful when streaming from a PC but will add some amount of latency or delay to the signal since wireless LAN was not originally designed for real-time audio streaming. Also, a number of products require to purchase separate wireless LAN modules that are plugged into every audio receiver.
Powerline products send the audio by means of the power mains and provide great range. They run into problems in homes where there are separate mains circuits in terms of being able to cross over into another circuit. Also, these products build in a delay of several seconds to safeguard against transmission errors during power surges and spikes which prevents their use in applications where the audio from wireless loudspeakers has to be in sync with other non-wireless speakers or video.
Here are some guidelines for selecting a wireless audio system: If you plan to stream audio into several rooms of your house, be certain to go for a system that allows 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. Selecting a product with some type of error correction will help mitigate against strong RF interference. Such interference can be caused by other wireless transmitters. Choose a digital RF transmitter to preserve the original audio quality, preferably one with an audio latency of less than 10 ms in case of video or other time-sensitive applications.
Select a transmitter that has all the audio inputs you require, such as speaker inputs, line-level RCA inputs etc. Get a wireless system where you can purchase 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. Select a transmitter that can regulate the audio volume of the input stage. This will give you the flexibility to connect the transmitter to any type of equipment with different signal levels. Otherwise the audio may get clipped inside the transmitter converter stage or the dynamic range is not fully utilized.
For high amplifier power efficiency and greatest sound quality, check that the amplified receiver has a built-in low-distortion digital amplifier. Pick a system that offers receivers that can drive speakers with the preferred Ohm rating. Make sure the receivers have a small form factor and are easily mountable. This will help during the installation. Devices which work in the 5.8 GHz frequency band will have less trouble with wireless interference than products utilizing the crowded 900 MHz or 2.4 GHz frequency band.
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