Usually, at a lesser MP3 bitrate, making use of joint stereo is considered as more valuable and beneficial. So a 128kb/s sum and difference stereo signal should be a bit better than two 64kb/s mono streams and also be a closer aproximation to the original than the other Joint Stereo method. Joint stereo can be simply considered as a means adopted to minimize the space occupied by an audio file without interrupting the stereo signal. By recombining these two signals in the appropriate manner you can recreate the original left and right stereo channels.īecause the difference signal tends to contain far less information than the sum signal you can allocate more bitrate to the sum so theoretically gaining a bit in quality. This is the same method that FM uses where you transmit two signals, one the sum of left and right (ie mono) and one the difference between left and right. There is another method called Sum and Difference. ![]() But it does allow more bits to be allocated to the audio information. This is not really a true stereo signal as it bears only a passing resemblance to the original. There are two common Joint Stereo techniques. ![]() No, UK DAB stations broadcast in joint stereo not true stereo, so that uses bandwidth to tell the digital signal which bits go to which speakers, so it's a computerised stereo rather than 2 seperate 64k channels.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |