ncpl;406196 Wrote: > Thanks. I'd spotted that some were 16/48, others 24/48 and some 2ch > PCM. > > I guess I wonder if the 16/48 DD would be same/worse/better than a > 16/44 PCM equivilant. In other words is PCM better in all cases than > anything DD/AC3 at similar rates? > > Either way, it's sounding good so far. I wonder also if they sound > better as I'm not diverting any brain power to watching the screen at > the same time...
All Dolby digital use lossy compression. What you're seeing with 16/48 DD is just a higher sample rate, 48kHz instead of 44.1kHz, but the signal is still compressed to a maximum bit rate of 448 kbit/sec. To answer your question, with PCM the maximum bit rate is determined by the bit depth (16 or 24) and the sample rate (44.1, 48, 88.2, 96, etc.) and for a 24 bit / 48 kHz file the maximum bit rate would be 1152 kbit/sec, which is more than double the maximum bit rate for the equivalent Dolby digital 24/48 file. All of which means that with the PCM file you're getting a lot more information which should mean slightly better sound. And don't forget that you should be converting the PCM files into flac files which will make them about half the size and if your using a SqueezeBox they can be streamed on your network as flac file, which means that they will use much less bandwidth than a raw wav (PCM) file. So, yes, if the music DVD contains PCM files, than use the PCM files instead of the Dolby digital files and rip them to flac. Please note: there is one good reason to use the Dolby digital files: if you want to make a 5.1 channel encoded flac file from the 6 channel Dolby digital file. You can stream a 5.1 channel encoded (using either Dolby digital or DTS) flac file to a SqueezeBox and if you connect the digital output of the SqueezeBox to the digital input a home theater receiver then the receiver will decode the signal and playback in 5.1 channels. Hope that I haven't confused you too much. -- ralphpnj Lock, Stock and Two Smoking Barrels -> Snatch -> The Transporter -> Transporter 2 'Last.fm' (http://www.last.fm/user/jazzfann/) ------------------------------------------------------------------------ ralphpnj's Profile: http://forums.slimdevices.com/member.php?userid=10827 View this thread: http://forums.slimdevices.com/showthread.php?t=61197 _______________________________________________ ripping mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/ripping
