Several Tips To Help Select A Cordless Surround Sound Package
The latest range of wireless surround sound transmitter devices promises streaming of music throughout the home without limits. We will take a look at the most popular technologies for wireless audio and give some suggestions for selecting the best wireless audio product.
Infrared products send the audio as lightwaves. Light can't penetrate walls. Therefore devices utilizing infrared, such as wireless surround sound kits, are limited to a single room.
RF wireless audio devices broadcast the music signal via radio waves. These radio wave signals can easily go through walls. The signal is sent either by using FM transmission or digital transmission. FM transmitters are the least expensive alternative. 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.
Products utilizing digital wireless audio transmission, such as Amphony audio transmitter products, employ a digital protocol in which the audio is converted to a digital signal before transmission. This method guarantees that the audio quality is completely maintained. Some transmitters employ some sort of audio compression, such as Bluetooth transmitters, which will degrade the audio to some degree. Transmitters which send the audio data uncompressed will attain the highest fidelity.
Products utilizing wireless LAN are useful when streaming audio from a PC. Their disadvantage is that they normally 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 typically require purchasing a separate LAN card to be plugged into every receiver.
Powerline products broadcast the audio via the power mains and offer large range. They run into problems in homes where there are separate mains circuits in terms of being able to cross over into another circuit. Powerline products have another problem in the form of power surges and spikes which can cause transmission errors. To prevent audio dropouts, these products will commonly have an audio latency of several seconds as a safeguard. Here are some recommendations for selecting the optimum wireless audio system: Try to find a system that can run several wireless receivers from a single transmitter. Ideally an unlimited number of receivers should be supported. That way you don't need to purchase additional transmitters when you begin adding receivers in several rooms of your house. Some products have some form of error correction built in which will help guard against dropouts in case of strong wireless interference. 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.
Here are some recommendations for picking the perfect wireless audio system: Try to find a system that can run several wireless receivers from a single transmitter. Ideally an unlimited number of receivers should be supported. That way you don't need to purchase extra transmitters when you begin adding receivers in different rooms of your house. Choosing a product with some form of error correction will help mitigate against strong RF interference. Such interference can be brought on by other wireless transmitters. Choose a digital RF transmitter to maintain the original audio quality, preferably one with an audio latency of less than 10 ms in case of video or other time-sensitive applications.
Choose a transmitter that has all the audio inputs you need, such as speaker inputs, line-level RCA inputs etc. Choose a system where you can add receivers later on which provide all of the necessary outputs, e.g. amplified speaker outputs, RCA outputs etc. Given that you may want to connect the transmitter to several sources, you should choose a transmitter that can be adjusted to different signal volume levels to prevent clipping of the audio signal inside the transmitter converter stage. Ensure that the amplified wireless receivers have built-in digital amplifiers with low distortion figures. This will keep the receiver cool due to high amplifier power efficiency and provide optimum sound quality. Make sure the receivers can drive speakers with your desired Ohm rating. Picking a product where the wireless receivers have a small footprint and easy mounting options will help in the course of the set up. Products which operate in the 5.8 GHz frequency band will have less trouble with wireless interference than products using the crowded 900 MHz or 2.4 GHz frequency band.
The latest range of wireless surround sound transmitter devices promises streaming of music throughout the home without limits. We will take a look at the most popular technologies for wireless audio and give some suggestions for selecting the best wireless audio product.
Infrared products send the audio as lightwaves. Light can't penetrate walls. Therefore devices utilizing infrared, such as wireless surround sound kits, are limited to a single room.
RF wireless audio devices broadcast the music signal via radio waves. These radio wave signals can easily go through walls. The signal is sent either by using FM transmission or digital transmission. FM transmitters are the least expensive alternative. 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.
Products utilizing digital wireless audio transmission, such as Amphony audio transmitter products, employ a digital protocol in which the audio is converted to a digital signal before transmission. This method guarantees that the audio quality is completely maintained. Some transmitters employ some sort of audio compression, such as Bluetooth transmitters, which will degrade the audio to some degree. Transmitters which send the audio data uncompressed will attain the highest fidelity.
Products utilizing wireless LAN are useful when streaming audio from a PC. Their disadvantage is that they normally 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 typically require purchasing a separate LAN card to be plugged into every receiver.
Powerline products broadcast the audio via the power mains and offer large range. They run into problems in homes where there are separate mains circuits in terms of being able to cross over into another circuit. Powerline products have another problem in the form of power surges and spikes which can cause transmission errors. To prevent audio dropouts, these products will commonly have an audio latency of several seconds as a safeguard. Here are some recommendations for selecting the optimum wireless audio system: Try to find a system that can run several wireless receivers from a single transmitter. Ideally an unlimited number of receivers should be supported. That way you don't need to purchase additional transmitters when you begin adding receivers in several rooms of your house. Some products have some form of error correction built in which will help guard against dropouts in case of strong wireless interference. 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.
Here are some recommendations for picking the perfect wireless audio system: Try to find a system that can run several wireless receivers from a single transmitter. Ideally an unlimited number of receivers should be supported. That way you don't need to purchase extra transmitters when you begin adding receivers in different rooms of your house. Choosing a product with some form of error correction will help mitigate against strong RF interference. Such interference can be brought on by other wireless transmitters. Choose a digital RF transmitter to maintain the original audio quality, preferably one with an audio latency of less than 10 ms in case of video or other time-sensitive applications.
Choose a transmitter that has all the audio inputs you need, such as speaker inputs, line-level RCA inputs etc. Choose a system where you can add receivers later on which provide all of the necessary outputs, e.g. amplified speaker outputs, RCA outputs etc. Given that you may want to connect the transmitter to several sources, you should choose a transmitter that can be adjusted to different signal volume levels to prevent clipping of the audio signal inside the transmitter converter stage. Ensure that the amplified wireless receivers have built-in digital amplifiers with low distortion figures. This will keep the receiver cool due to high amplifier power efficiency and provide optimum sound quality. Make sure the receivers can drive speakers with your desired Ohm rating. Picking a product where the wireless receivers have a small footprint and easy mounting options will help in the course of the set up. Products which operate in the 5.8 GHz frequency band will have less trouble with wireless interference than products using the crowded 900 MHz or 2.4 GHz frequency band.
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