What is TwinVQ ?
A. TwinVQ (Transform domain Weighted INterleave Vector Quantization) ) is a name of audio coding technique and is one of the object types defined in MPEG-4 Audio version 1. This object type is based on a general audio transform coding scheme which is integrated with the AAC coding frame work, a spectral flattening module, and a weighted interleave vector quantization module. This scheme has high coding gain for low bitrate and potential robustness against channel errors and packet loss, since it does not use any variable length coding and adaptive bit allocation. It supports bitrate scalability, both by means of layered TwinVQ coding and in combination with the scalable AAC. Note that some commercialized products such as Metasound (Voxware), SoundVQ (YAMAHA), and SolidAudio (Hagiwara) are also based on the TwinVQ technology, but the configurations are different from the MPEG-4 TwinVQ. .
How does TwinVQ compare to mpeg layer 3 (mp3)? TwinVQ not only averages a 33% lower filesize for the same song encoded in both formats, but has a fidelity to it much greater than the one of the *.mp3. In other words, TwinVQ beats mp3 in both filesize, and sound quality, resulting in shorter downloads, and more cd-like sound. Mp3 was pretty processor dependant, what about TwinVQ? Requirements Variable Encoder Player OS Windows95 and NT 4.0 Windows95 and NT 4.0 CPU Pentium 66MHz or better Pentium 90MHz or better (for 44KHz Stereo data) i486 66MHz or better (for 22KHz Mono data) Memory 16MB+ 16MB+ Audio N/A 16Bit (stereo) Sound Card What is TwinVQ’s file extension? TwinVQ’s file extension is *.vqf Can I convert my current mp3’s to the TwinVQ format? It is possible, yes, but we don’t recommend it. TwinVQ files encoded from raw cd audio have a higher quality than mp3’s do, and when you compress the mp3 audio data into TwinVQ you’re basically getting an mp3 with a lower filesize, minus the e
