AC3, short for Dolby Digital AC-3, is a new generation of multi-channel digital system for home theater. It contains five channels for normal-range speakers and one channel for the subwoofer driven low-frequency effects, and so it is also known as 5.1-channel. Audio files could be compressed to as small as 1/12 by AC3 with some loss on sound quality correspondingly.

WMA is Windows Media Audio. WMA is a new audio format developed by Microsoft well known as MP3. With a higher rate in files compression and better sound quality than the latter, even far beyond those of RA.

To convert ac3 to wma, please install DVD players such as WinDVD player or PowerDVD player, which include the AC3 decoder. Because wma format only supports stereo or mono channel, please configure output audio channel as stereo in properties of AC3 decoder.  Or install the ac3 decoder. In VISTA the codec is bundled as default. 

Download WMA Converter which can convert ac3 to wma file. Select an ac3 file, set the start time, the end time or audio encoding bitrate if needed. The bitrate is bigger, the file size is bigger, the audio quality is higher, and vice versa. Click the Convert button to convert ac3 to wma.

TTA is short for True Audio. Itís a both free and simple real-time Lossless Audio Codec based on adaptive filtering forecast. It has he same or better compression effect compared with the main other formats. The compression rate of TTA is up to 30% to 70%, and the encoding speed is very fast, too. Lossless audio formats (such as TTA) compression ratio is about 2:1, and the data it compressed is the same with that is not done.

To convert tta to wma, please install the appropriate the TTA directShow filter.

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