Matko Uibo wrote: > There is new Hi-Rez audio format avaliable - MQA - Master Quality > Authenticated > > Have anybody looked deeper into this to confirm is it some kind of drm?
Hi Marko, I had never heard of MQA before, and now have only read the blog post you included a link to plus a follow-up post by the same blogger. MQA is not a system of DRM but, instead, uses a watermark to include non-Nyquist information. This is used to better recreate transients in the original audio waveform. > Since flac is bsd licenced there should be no licencing issues. Licensing of FLAC is for the code, not for the audio content. FLAC files can and do contain copyrighted audio content. Unlike FLAC, MQA will be proprietary. > I have > heard rumors that if flac file contains pcm data with mqa watermark then > it can be unpacked but mqa data is lost and mqa capable hardware cant > decode it, since I don't have mqa capable dac I don't know is it true or > false. I don't know is special playback software needed for playng flac > with MQA data. FLAC is lossless so, after decompression, the resulting audio content is identical to the original. Any watermark, MQA or otherwise, will therefore be preserved. MQA is unconnected with FLAC, so I am puzzled why you posted about it to the flac-dev list. > Here is screenshot that I found from this article > https://mrapodizer.wordpress.com/2015/01/13/mqa-what-is-meridian-hiding/ Here is the follow-up blog post: https://mrapodizer.wordpress.com/2015/02/09/mqa-further-explained/ Regards, Martin -- Martin J Leese E-mail: martin.leese stanfordalumni.org Web: http://members.tripod.com/martin_leese/ _______________________________________________ flac-dev mailing list flac-dev@xiph.org http://lists.xiph.org/mailman/listinfo/flac-dev
