Microsoft KB Archive/944626

= You experience poor audio quality when you use Internet Audio Broadcast to listen to a meeting in Live Meeting 2005 =

Article ID: 944626

Article Last Modified on 11/13/2007

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APPLIES TO


 * Microsoft Office Live Meeting 2005

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SYMPTOMS
When you use Internet Audio Broadcast (IAB) to listen to a meeting in Microsoft Office Live Meeting 2005, you experience poor audio quality.



CAUSE
This issue may occur for one or more of the following reasons.

Cause 1
This issue may be caused by network congestion or by Internet congestion.

Cause 2
This issue may be caused by congestion on proxy devices, firewall devices, and Network Address Translation (NAT) devices that are used for incoming Internet connections or for outgoing Internet connections.

Cause 3
This issue may be caused by a slow Internet connection, such as a dial-up connection, a slow broadband connection, or an intermittent broadband connection.

Cause 4
This issue may be caused by software that bounds sound card drivers, monitors sound card drivers, or uses sound card drivers. Or, this issue may be caused by software that uses computer resources such as CPU resources, memory resources, or network resources.

Cause 5
This issue may be caused by audio programs or Voice over IP (VoIP) programs, such as Vonage and Skype, that compete for bandwidth on the network. These programs may cause network saturation to the extent to which the audio seems choppy or stops.



RESOLUTION
To resolve this issue, determine whether the audio quality is related to Live Meeting services or to something else.

Resolution for Cause 1
To resolve this issue, try to stream audio from another media source such as the Windows Media Web site. To do this, visit the following Windows Web site:

http://www.windowsmedia.com/MediaGuide/Home

Resolution for Cause 2
To resolve this issue, try to bypass any proxy devices, firewall devices, or NAT devices. Then, connect directly to the Internet.

Resolution for Cause 3
To resolve this issue, upgrade the Internet connection to use more bandwidth. For example, you can upgrade to a Digital Subscriber Line (DSL) connection or to a cable connection.

Resolution for Cause 4
To resolve this issue, exit all programs such as Winamp, TotalRecorder, and other programs that are running and that use audio components. Additionally, exit all external programs or external devices that consume bandwidth for audio purposes or for video purposes, such as Vonage and Skype.

Resolution for Cause 5
To resolve this issue, determine whether any additional media codecs, such as the DivX codec, are installed that may hamper the ability of Windows Media Player to decode the incoming audio stream. If third-party codecs are installed, remove the codecs by using the Add or Remove Programs item to test whether the third-party codec causes the issue. You can add the third-party codec back when you verify that the codec does not cause the issue.

Note Poor audio quality may be caused by a hacked codec from DivXNetworks, Inc., and by a third-party program that is named TotalRecorder. TotalRecorder lets you record Internet broadcasts among other options. TotalRecorder runs in the background and may cause delays, high CPU processor cycles, high memory usage, and other issues. Such issues reduce the overall audio quality of Windows Media Player.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Additional query words: lm7, lm2005, 1098, IAB, Media Player, WMP, Audio, Quality

Keywords: kbexpertisebeginner kbtshoot KB944626

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