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#1
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Bluetooth audio receiver
Can I use Bluetooth to transmit audio played on my home PC to
loudspeakers which are in another room? Is it possible to get a device which is like a bluetooth receiver to pick up the audio broadcast from the PC dongle and then output an audio signal into my self-powered speakers? (I'm on bit of a budget, so I would rather not buy another Bluettooth transmitter dongle or buy some complete send-receive kit unless I have to.) |
#2
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Bluetooth audio receiver
John D wrote:
Can I use Bluetooth to transmit audio played on my home PC to loudspeakers which are in another room? Is it possible to get a device which is like a bluetooth receiver to pick up the audio broadcast from the PC dongle and then output an audio signal into my self-powered speakers? (I'm on bit of a budget, so I would rather not buy another Bluettooth transmitter dongle or buy some complete send-receive kit unless I have to.) The most reliable solution is: wires (line level audio) At least they won't let you down. Wireless schemes or other kinds of networking schemes, all have their exposures. For example, with wireless, you have competition from the portable telephone, microwave, existing Wifi for computers, any Bluetooth traffic that is already there. With networking over power lines, any interference generating appliance (vacuum cleaner), can affect the goodput of the network. That being said, here is a (not so cheap) solution. ******* If the device in the other room is near a power outlet, you can actually use power lines to carry audio. If you could find an ethernet to audio box, you could also use other Homeplug Alliance member's solutions for power line networking. The reason I mention that, is maybe the solution could be cheaper, if using a different set of component parts. http://download.devolo.com/webcms/05...1/awb_2_de.jpg http://www.materiel.net/ctl/Solution...arter_Kit.html http://www.devolo.de/de_DE_cs/produk...naudioext.html Audio quality is roughly CD quality. http://download.devolo.net/webcms/06...xtender_de.pdf The above power line method is not bulletproof. Apparently, vacuum cleaners and hair dryers, if operated on the same outlet, can knock out the service. If you can make some lucky choices in each room, as to where to plug in the adapters, you might avoid most of it. ******* Bluetooth "basic" audio channel, is telephony quality (64 kilobit). And telephony voice channels carry 4KHz signals. (Would sound like a bad AM radio station, like our local government sponsored broadcaster.) Bluetooth also has audio profiles. They carry some kind of compressed content, which will have lossy compression artifacts. So similar issues to MP3. If you like MP3s, then maybe you wouldn't mind. I have seen a lossless CODEC for Bluetooth mentioned, but I don't think it is shipping yet. When it is available, it should be more interesting. ******* There are analog wireless devices, some of which are quite cheap. (Radio Shack used to carry some of these, but I don't see the exact ones any more.) None that I've looked at so far, bothered to state what analog bandwidth they carried. Which means you have no way of judging what they'll sound like. At least the Devolo is uncompressed, and has a sampling rate of 44.1KHz (audio can be up to the Nyquist limit, or 22.05 KHz - the practical limit should be whatever a CD promises). ******* You could also go Wifi audio. If you have a Wifi router already, for your computer, then this could be your remote audio peripheral. Notice that this thing actually has audio specs :-) Being wireless, it only works as long as there is sufficient goodput via the local conditions (apartment dwellers beware). http://www.rokulabs.com/products_soundbridge_specs.php ******* One problem with all of this, is the instant you say "audio" or "audiophile", the price goes up. At least some of these things, do not have expensive component costs. But the price goes up, to suit the perceived market. The display on the Roku is just a waste, but it looks pretty. HTH, Paul |
#3
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Bluetooth audio receiver
John D wrote:
Can I use Bluetooth to transmit audio played on my home PC to loudspeakers which are in another room? Bluetooth is intended as PAN (personal area network). I.e. am operating range of 3 feet or 1 meter. Is it possible to get a device which is like a bluetooth receiver to pick up the audio broadcast from the PC dongle and then output an audio signal into my self-powered speakers? Possible: yes. Certainly if you are living in the middle of nowhere (wich means: no interfering magnetrons, wifi, wireles baby monitoring equipment, etc.) (I'm on bit of a budget, so ...don't waste it :-) -- Kind regards, Gerard Bok |
#4
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Bluetooth audio receiver
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#5
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Bluetooth audio receiver
Jon wrote:
In article , says... Can I use Bluetooth to transmit audio played on my home PC to loudspeakers which are in another room? Yes, but bare in mind that bluetooth is designed for short range applications. If you try and put it through walls etc you may find the signal is degraded. Not enough to log into my next door neighbours mobile phone though. Next time I saw him I asked if he had a mobile with blue tooth enabled and he told me it was is son's. Dave |
#6
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Bluetooth audio receiver
Gerard Bok wrote:
John D wrote: Can I use Bluetooth to transmit audio played on my home PC to loudspeakers which are in another room? Bluetooth is intended as PAN (personal area network). I.e. am operating range of 3 feet or 1 meter. How did you work that one out? Bluetooth has come a long way and was always intended as a comms device but distance 1m? I always saw it advertised as capable of 'up to 30 feet' so you appear to be a factor of 10 out! I have never seen its range purported to be so minimal |
#7
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Bluetooth audio receiver
DCA wrote:
Gerard Bok wrote: John D wrote: Can I use Bluetooth to transmit audio played on my home PC to loudspeakers which are in another room? Bluetooth is intended as PAN (personal area network). I.e. am operating range of 3 feet or 1 meter. How did you work that one out? Bluetooth has come a long way and was always intended as a comms device but distance 1m? I always saw it advertised as capable of 'up to 30 feet' so you appear to be a factor of 10 out! I have never seen its range purported to be so minimal http://en.wikipedia.org/wiki/Bluetooth Class 1 100 mW (20 dBm) ~100 meters Class 2 2.5 mW (4 dBm) ~10 meters Class 3 1 mW (0 dBm) ~1 meter Paul |
#9
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Bluetooth audio receiver
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#10
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Bluetooth audio receiver
On 14 Jan, 07:29, Jon wrote:
In article , says... Jon wrote: In article , says... Can I use Bluetooth to transmit audio played on my home PC to loudspeakers which are in another room? Yes, but bare in mind that bluetooth is designed for short range applications. If you try and put it through walls etc you may find the signal is degraded. Not enough to log into my next door neighbours mobile phone though. Next time I saw him I asked if he had a mobile with blue tooth enabled and he told me it was is son's. Being able discover another device requires much less signal strenght than sustaining an audio stream. -- Regards Jon There are a number of different bluetooth profiles. The one the OP wants is "A2DP" - i.e. high quality, stereo audio. Not to be confused with the low quality mono "headset" or "handset" profiles. To get this to work you'll need a dongle that supports A2DP and a receiver that also supports it, and provides a line out into your amp. I use a Belkin Tunestage originally bought for my iPod. It has an iPod-specific dongle that plugs into the iPod, and a receiver that plugs into the amp. Happily, as it's A2DP my mobile phone and my Apple Macbook Pro can both natively stream audio to it without a dongle at all. The audio is lossy, i.e. compressed, but it's plenty good enough not to notice, at least to my ears. Range is around 20-30 feet, if I had to guess. I also use some excellent bluetooth stereo headphones/headset - the Motorola HT820s. These were under 20 quid delivered via Amazon and work with all my BT devices nicely. Ric |
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