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Audio codec table

The following codecs are installed with Windows Media Encoder. It is recommended that you use the Microsoft Audio codec for compressing and decompressing music content and ACELP.net for compressing and decompressing voice content.

Codec Description
Microsoft Audio Codec The MSAudio codec is a highly scalable codec that provides high quality mono and stereo audio content over a wide range of bandwidths. You can use the MSAudio codec to encode audio content at bandwidths ranging from 5 kilobits per second (Kbps) to 160 Kbps. The audio sampling rate ranges from 8 kilohertz (kHz) to 48 kHz. This allows you to choose the best combination of bandwidth and sampling rates for your content. This codec is also very loss tolerant, so it is excellent for use with streaming content. It has superb clarity and tonal depth to provide better sounding music content than comparable codecs. In addition, this codec can be used to remove an audio track from a piece of content by selecting the 0 kilobits per second (Kbps) audio format. If you are creating audio files for download, the MSAudio codec is a great choice because it provides near CD-quality sound at half of the datarate required by most codecs.
FhG MPEG Layer-3 Moving Picture Experts Group (MPEG) Layer-3, which is created by FhG, is a high-fidelity mono audio codec that is particularly good for CD-quality audio for an intranet or the Internet. MPEG Layer-3 comes with several formats depending on the network bandwidth you choose.
Lernout & Hauspie CELP 4.8 kilobits per second (Kbps) L&H is a low bit-rate codec for voice oriented mono audio content that has a sampling rate of 8.000 kilohertz (kHz).
ACELP.net ACELP is a low bit-rate codec that provides excellent voice compression. ACELP comes with several audio formats depending on the network bandwidth you choose.
Voxware MetaSound Voxware MetaSound provides high-quality sound using low- to mid-range bit rates. MetaSound comes with a variety of mono and stereo audio formats to choose from depending on your network bandwidth.
Voxware MetaVoice Voxware MetaVoice provides a mono audio format that is used for extremely low bit-rate voice only content.


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