#9340: SACD/DSD decoding support ------------------------------------+---------------------------- Reporter: forart.eu | Owner: nobody Type: enhancement | Status: new Priority: normal | Milestone: Unscheduled Component: Audio & Video/Codecs | Version: R1/Development Resolution: | Keywords: SACD Blocked By: | Blocking: Has a Patch: 0 | Platform: All ------------------------------------+---------------------------- Comment (by pulkomandy): It's really 1-bit, however it's not an usual PCM encoding but pulse density modulation. This can be decoded easily with an analogic electronics circuit, removing the need for a classical DAC and the noise and nonlinearities it introduces. We could transcode to 8-bit audio, but this would result in a stream at about 2.5megabytes per second (the sampling rate is very high to compensate for the 1-bit resolution), and using only 8-bit would result in low quality. Decoding to 16 or 32 bits audio would result to 5 or 10MB/s bitrate, for a single channel (there can be 6 channels in a 5.1 disc). And if we make the decoder itself downsample everything, then the high quality of the format is lost and I don't see much point in the whole effort. -- Ticket URL: <https://dev.haiku-os.org/ticket/9340#comment:4> Haiku <https://dev.haiku-os.org> Haiku - the operating system.