Bit rates for XM and Sirius?

eds65gto · 4th September 2005, 04:30 PM

Does anyone know the bit rates for XM and Sirius? I have a disagreement with a friend and would like to get the right answers.
Thank You
Ed

oPossum · 6th September 2005, 10:31 PM

They both use a variable bit rate (VBR). It probably varies from about 5 to 50 kbps.

The aggregate bit rate of both services is around 6 Mbps. Some of this is overhead. Assume 5 Mbps for 180 channels = 28 kbps per channel average.

They use different CODECs, so even if the bit rate where fixed and equal, the sound would still differ. The CODECs are more efficient than MP3, and have different character than AAC.

Brian Donaldson · 7th September 2005, 02:03 AM

I have a year free subscription with a new car to Sirius. the sound quality is awfull. I Emailed asking about the bitrate. Here's the response....

Dear Brian,

Thanks for your recent email. We appreciate the time you have taken to
contact SIRIUS in regards to our bitrate. Currently at this time our
system is using a 34 Kbs bitrate. We understand any inconvenience this
may cause. We are trying to accommodate listeners of all types. We
hope this information helps.

We are committed to providing you with the best in customer care. If
you have any more questions, please feel free to contact SIRIUS
Customer
Care. For your convenience, we are available 24 hours a day, 7 days a
week at:

1-888-539-SIRIUS (7474)

As well as by email at:

www.sirius.com/customercare

Sincerely,

Michael B
SIRIUS Customer Care

Did you know that SIRIUS has great money-saving billing options? You
can get 1-14 months free depending on the option you choose. Call us
at
888-539-SIRIUS (7474) and weâ€™ll help you choose the plan thatâ€™s
right
for you!

Original Message Follows:
------------------------
First Name: Brian
Last Name: Donaldson
Email Address: yahoo.com
Subscriber: Yes
Account Number: xxxxxxxx
Message: What bitrate do you use. The sound quaility in my new Dodge is
awful. I do like the programming and considered getting a home
reciever,
but the sound quality is so bad that I can't enjoy the music. If this
isn't due to a short term problem that is soon to be rectified, my
subscription will end after the free year.

Thanks

4th September 2005, 04:30 PM	#1
eds65gto diyAudio Member Join Date: Dec 2004 Location: Mt Pleasant Sc	Bit rates for XM and Sirius? Does anyone know the bit rates for XM and Sirius? I have a disagreement with a friend and would like to get the right answers. Thank You Ed

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6th September 2005, 10:31 PM	#2
oPossum diyAudio Member Join Date: May 2005 Location: Michigan	They both use a variable bit rate (VBR). It probably varies from about 5 to 50 kbps. The aggregate bit rate of both services is around 6 Mbps. Some of this is overhead. Assume 5 Mbps for 180 channels = 28 kbps per channel average. They use different CODECs, so even if the bit rate where fixed and equal, the sound would still differ. The CODECs are more efficient than MP3, and have different character than AAC.

7th September 2005, 02:03 AM	#3
Brian Donaldson diyAudio Member Join Date: Jan 2003 Location: Texas, Love it or leave it	I have a year free subscription with a new car to Sirius. the sound quality is awfull. I Emailed asking about the bitrate. Here's the response.... Dear Brian, Thanks for your recent email. We appreciate the time you have taken to contact SIRIUS in regards to our bitrate. Currently at this time our system is using a 34 Kbs bitrate. We understand any inconvenience this may cause. We are trying to accommodate listeners of all types. We hope this information helps. We are committed to providing you with the best in customer care. If you have any more questions, please feel free to contact SIRIUS Customer Care. For your convenience, we are available 24 hours a day, 7 days a week at: 1-888-539-SIRIUS (7474) As well as by email at: www.sirius.com/customercare Sincerely, Michael B SIRIUS Customer Care Did you know that SIRIUS has great money-saving billing options? You can get 1-14 months free depending on the option you choose. Call us at 888-539-SIRIUS (7474) and weâ€™ll help you choose the plan thatâ€™s right for you! Original Message Follows: ------------------------ First Name: Brian Last Name: Donaldson Email Address: yahoo.com Subscriber: Yes Account Number: xxxxxxxx Message: What bitrate do you use. The sound quaility in my new Dodge is awful. I do like the programming and considered getting a home reciever, but the sound quality is so bad that I can't enjoy the music. If this isn't due to a short term problem that is soon to be rectified, my subscription will end after the free year. Thanks

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