WinX DVD Ripper Platinum is powerful DVD ripping software that can help rip DVD to popular digital formats, either video formats or audio formats, AAC, MP3 and AC3 indluded. With professional players, 5KPlayer, Windows Media Player, VLC, The KMPlayer, ffdshow, Winamp, XBMC, etc, everyone can play AAC audios effortlessly. In contrast to MP3's hybrid filter bank, AAC uses the modified discrete cosine transform (MDCT) together with the increased window lengths of 1024 or 960 points. The MPEG-4 audio coding algorithm family spans the range from low bitrate speech encoding (down to 2 kbps)to high-quality audio coding(at 64 kbps per channel and higher).ĪAC offers sampling frequencies between 8 kHz and 96 kHz and any number of channels between 1 and 48. The MPEG-4 audio standard does not define a single or small set of highly efficient compression schemes but rather a complex toolbox to perform a wide range of operations from low bitrate speech coding to high-quality audio coding and music synthesis. Also, it is supported by Nokia/Windows Phone, Android, Sony Walkman, Sony's PlayStation Portable, Nintendo's Wii, HDTV, Apple TV, DVB and more. The MPEG-2 audio tests showed that AAC meets the requirements referred to as "transparent" for the ITU at 128 kbps for stereo, and 320 kbps for 5.1 audio.ĪAC is the default or standard audio format for Apple's iPhone, iPod, iPad, iTunes, Sony's PlayStation 3 and YouTube. The quality for stereo is satisfactory to modest requirements at 96 kbps in joint stereo mode however, hi-fi transparency demands data rates of at least 128 kbps (VBR). AAC is able to include 48 full-bandwidth (up to 96 kHz) audio channels in one stream plus 16 low frequency effects channels, up to 16 "coupling" or dialog channels, and up to 16 data streams. The MPEG-2 standard contains several audio coding methods, including the MP3 coding scheme. MP3ĪAC has been standardized by ISO and IEC, as part of the MPEG-2 and MPEG-4 specifications. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at similar bit rates.
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