OEM Satellite Radio: Poor Quality!?!?!
#16
Satellite radio in general is just a notch above FM, but lower quality than CD's. The OEM receivers compound the problem by outputting a really flat signal to a poor Bose equalizer. If you mess with the audio settings treble/bass etc you can get it to sound OK never but never great. I would expect a really good equalizer could do a much better job.
Satellite radio is digital, so as far as reception goes you either get it or you don't; there's no in between.
Satellite radio is digital, so as far as reception goes you either get it or you don't; there's no in between.
#18
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Originally Posted by Maximus
its not the sat radio thats bad quality, its the Sirius.
Sirius has no quality control so their product is not as good as XM.
With XM, the content is not as repetitive, and the quality is just as good, if not better than CD. Their reception in the radio is crisp, and the XM also offers the Navtraffic service, which displays traffic information per city.
It also depends on where you have ur antenna mounted, and how good the coverage is in the area you live, just like sat. tv.
Sirius has no quality control so their product is not as good as XM.
With XM, the content is not as repetitive, and the quality is just as good, if not better than CD. Their reception in the radio is crisp, and the XM also offers the Navtraffic service, which displays traffic information per city.
It also depends on where you have ur antenna mounted, and how good the coverage is in the area you live, just like sat. tv.
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Originally Posted by Maximus
Yea, the antenna on the dash wont work to well. I had mine inside of the car for a while (on the rear by the speakers) and the reception was choppy. The glass attenuates the signal a little, but the roof and A pillar will also get in the way of the signal, cus its a satellite signal directly from above. Maybe if you could somehow get some slack in the wires so u can run it to somewhere around the sunroof, because the roof outside the car is the best place to recieve signal.
#22
Uhh, SAT radio is not nearly as good as CD quality sound. SAT radio aims to perform as well as/better than FM radio in sound quality. That's the bottom line. XM Radio uses CTaac-Plus compression that tosses out high frequency data and recreates the data based on what the lower frequencies look like. This is done to conserve bandwidth - you can lower the sampling rate while still being able to transmit the desired frequency range. It's called SBR (spectral band recreation) and needless to say, it screws up the upper spectrum more often than I'd like. But what can you expect when you're creating something out of nothing?
If you want to find an easy way to expose the inadequacy of AAC-Plus, listen to something brassy. Trumpets and french horns will sound particularly bad as AAC-Plus has a very difficult time recreating all the overtones.
Sorry I don't know much about Sirius; they use a different compression scheme. XM's average music channel bandwidth is about 64kbps. Remember that this equates to something much higher in MP3 bitrates since XM is tossing out a good deal of information in the high frequencies, and the AAC codec is better at low bitrates on top of that.
More info on CTaac-Plus and MP3Pro SBR compression...
http://www.ebu.ch/en/technical/trev/trev_291-dietz.pdf
http://www.telos-systems.com/?/techt...us/default.htm
If you want to find an easy way to expose the inadequacy of AAC-Plus, listen to something brassy. Trumpets and french horns will sound particularly bad as AAC-Plus has a very difficult time recreating all the overtones.
Sorry I don't know much about Sirius; they use a different compression scheme. XM's average music channel bandwidth is about 64kbps. Remember that this equates to something much higher in MP3 bitrates since XM is tossing out a good deal of information in the high frequencies, and the AAC codec is better at low bitrates on top of that.
More info on CTaac-Plus and MP3Pro SBR compression...
http://www.ebu.ch/en/technical/trev/trev_291-dietz.pdf
http://www.telos-systems.com/?/techt...us/default.htm
Last edited by chenga; 02-28-2006 at 06:29 AM.
#23
#24
Originally Posted by G35_TX
Attenna on the dash with not effect quality only signal strength. I had mine on my dash in my 04 G35 without any problems with my aftermarket setup.
#25
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Originally Posted by Maximus
Sat Radio has much to do with the area where you live. If you are in an area with good sat. coverage, or closeby a terrestrial repeater, you should get full signal bars all the time, and error-free audio. However if you are in an area with poor coverage, choppy audio will result.
#27
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