Re: [slim] How to fix music track that Transporter plays back twice as fast?
atrocity wrote: > That's the first time I've ever heard that. My inner skeptic wonders how > that would work when plugged into equipment expecting 44.1 and why an > oddball sample rate like that wouldn't completely break DTS. Are you > sure that's the real sample rate and, if so, that players don't already > concert to 44.1 before outputting? Though I also have trouble believing > circa 1990 consumer equipment could convert on the fly that well. > > On the other hand, maybe you're right and it explains why I got > intermittent single sample pops when attempting to capture LD output via > optical TOSLINK into a standalone CD recorder. Yes, if you sample digitally at 44.1 kHz, you'll get that popping. Of course, an analogue rip will work just fine, regardless of your computer's set sample rate. It's great to hear that I'm not the only one ripping audio from LDs. Out of curiosity, what LDs have you found worth your while to rip? This time around, I ripped the two versions of "Koyaanisqatsi" (they sound so much better than any of the CDs, not to mention the fact that they're complete), "Pink Floyd's The Wall" (the 1997 "widescreen collector's edition", which allegedly has more dynamics and deeper bass than the DVD versions), "Pulse" by Pink Floyd (which I ripped for the few extra tracks that aren't on the CD; I haven't noticed a strong difference in audio quality, however). The LD of Duran Duran's music videos also has fantastic audio quality, even though it's analogue only. megarat's Profile: http://forums.slimdevices.com/member.php?userid=66421 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
atrocity wrote: > Yep...I did things backwards and Googled that AFTER I stupidly > questioned it in public. :) > > But I still wonder what really comes out of the digital output. I > started using the optical output on a Panasonic player into a Sony > receiver circa 1992 and everything just worked, with the Sony indicating > a 44.1 sample rate. Is 44.056 simply close enough that nothing complains > or is the output upsampled to 44.1? Good question. I guess on these old devices we can exclude any upsampling. There wasn't any computing power to do that in a player. In case of my Transporter i think it plays back the files simply 0.1% faster out of its buffer. A 1kHz tone becomes 1001Hz then. I doubt you can hear that. Transporter (modded) -> RG142 -> Avantgarde Acoustic based 500VA monoblocks -> Sommer SPK240 -> self-made speakers Wombat's Profile: http://forums.slimdevices.com/member.php?userid=4113 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
Wombat wrote: > https://en.wikipedia.org/wiki/LaserDisc > NTSC discs have a 44.056kHz audio track. Yep...I did things backwards and Googled that AFTER I stupidly questioned it in public. :) But I still wonder what really comes out of the digital output. I started using the optical output on a Panasonic player into a Sony receiver circa 1992 and everything just worked, with the Sony indicating a 44.1 sample rate. Is 44.056 simply close enough that nothing complains or is the output upsampled to 44.1? atrocity's Profile: http://forums.slimdevices.com/member.php?userid=16009 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
https://en.wikipedia.org/wiki/LaserDisc#cite_note-AllforMP3-26 NTSC discs have a 44.056kHz audio track. Transporter (modded) -> RG142 -> Avantgarde Acoustic based 500VA monoblocks -> Sommer SPK240 -> self-made speakers Wombat's Profile: http://forums.slimdevices.com/member.php?userid=4113 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
megarat wrote: > The LD's native digital audio is Redbook-esque, but not precisely so, > being 16 bit and 44056 Hz. That's the first time I've ever heard that. My inner skeptic wonders how that would work when plugged into equipment expecting 44.1 and why an oddball sample rate like that wouldn't completely break DTS. Are you sure that's the real sample rate and, if so, that players don't already concert to 44.1 before outputting? Though I also have trouble believing circa 1990 consumer equipment could convert on the fly that well. On the other hand, maybe you're right and it explains why I got intermittent single sample pops when attempting to capture LD output via optical TOSLINK into a standalone CD recorder. atrocity's Profile: http://forums.slimdevices.com/member.php?userid=16009 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
Well, I'll be darned. I'm not sure what happened with my previous tests of the sample rate, but after some more futzing with Audacity it appears that the Transporter can play the music just fine. I'm not sure if this was user error, but I did discover some curious inconsistencies with how Audacity performs on my Mac vs. my Linux box, especially with how files are exported, and it's possible that the software let me down. And while I'm a tiny bit annoyed that the Transporter couldn't handle these files as-is, as I wanted to preserve these files from the rounding errors inherent with resampling, and keep them immortalized as a perfect copy of the original digital source, I think this will probably be a perfectly practical solution, and I'm looking forward to doing an A/B test between the original LD source and the Redbook-upsampled versions to see if I can hear any differences. Thanks for all of your help with this. megarat's Profile: http://forums.slimdevices.com/member.php?userid=66421 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
I only had speed problems on my Transporter when trying non-standard samplerates like 64kHz. These files play fine in foobar. I can only guess the upsampling leaves some PCM header that it misinterprets while i don't know the header ever reaches the player because LMS sends the music only. Since Squeezeboxes work correctly i get even more confused. Isn't the config people use to upsample in LMS specific for every player? Ever played with that and left some trace? Transporter (modded) -> RG142 -> Avantgarde Acoustic based 500VA monoblocks -> Sommer SPK240 -> self-made speakers Wombat's Profile: http://forums.slimdevices.com/member.php?userid=4113 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
> If it is double speed then there is only probably one channel in the > file - convert to 2 channel. I have plenty of mono flac's which play perfectly on my Transporter, so I don't think double speed and one channel is related. Fizbin's Profile: http://forums.slimdevices.com/member.php?userid=58734 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
It wouldn't surprise me if the Mac optical input is the source of the issue. I doubt it understands 44056. Worst comes to worst you can record the LD analog output. Apesbrain's Profile: http://forums.slimdevices.com/member.php?userid=738 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
Thanks for the details re: Transporter playback. This gives me some evidence that the sample rate is the issue, and I'll keep looking in it. More to come. Re: ripping LDs, yes, I just connect a TOSLINK cable from the optical out on the back of the LD player to the audio input on my Mac Mini. (Many modern Macs have a special 1/8" phono audio-in port that will function as a TOSLINK input if you use the proper adapter.) Once connected, the rip is pretty straightforward. megarat's Profile: http://forums.slimdevices.com/member.php?userid=66421 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
I'm curious, you don't hear much about LDs these days; how are you "ripping" them? LD digital output to USB audio interface? Apesbrain's Profile: http://forums.slimdevices.com/member.php?userid=738 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
megarat wrote: > > Does the Transporter have an issue with files that aren't sampled at > 44.1 kHz? It's good for 16/24-bit at 44100/48000/88200/96000. Apesbrain's Profile: http://forums.slimdevices.com/member.php?userid=738 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
If it is double speed then there is only probably one channel in the file - convert to 2 channel bpa's Profile: http://forums.slimdevices.com/member.php?userid=1806 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
That's correct. I've re-opened an upsampled file and confirmed that it's indeed 44.1 kHz. Does the Transporter have an issue with files that aren't at 44.1 kHz? megarat's Profile: http://forums.slimdevices.com/member.php?userid=66421 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
By opening, changing sample rate to 44100, and saving, right? Should work. You might try a different converter such as foobar2000. Apesbrain's Profile: http://forums.slimdevices.com/member.php?userid=738 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
I'm doing the upsampling with Audacity. megarat's Profile: http://forums.slimdevices.com/member.php?userid=66421 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] How to fix music track that Transporter plays back twice as fast?
How are you converting then to redbook? Apesbrain's Profile: http://forums.slimdevices.com/member.php?userid=738 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
[slim] How to fix music track that Transporter plays back twice as fast?
Greetings, I hoping that one of the experts here can help me with a long-standing issue. In a nutshell: I have some music files that play fine on a Squeezebox2 and a Squeezebox3, but when I play them on a Transporter, they play back twice as fast. And I mean that quite literally: the music sounds like The Chipmunks on speed, and you can even see the elapsed time indicator on the display ticking off two seconds at a time. Because they play fine on the SB2/SB3, I presume this isn't a server issue (unless there are Transporter-specific server settings that I'm unaware of), so I'm wondering if there is a property of the music file that might be causing this. Some additional details: I have a collection of laserdiscs, and one of the hallmarks of LDs is that they have the capacity for (essentially) CD-quality audio, and there are many music LDs that are noteworthy for having fantastic sound, with even a better dynamic range than an equivalent CD. I have a few of these LDs, and I am trying to rip their audio tracks into a format that I can play on my home audio systems. Analogue rips work just great, no problems there. The 2x playback problem, however, occurs with digital rips of the LD's digital stereo audio track. The LD's native digital audio is Redbook-esque, but not precisely so, being 16 bit and 44056 Hz. I capture the audio with Audacity via direct TOSLINK connection at exactly the same specifications (16 bit and 44056 Hz). The rips play back fine in Audacity, and after I export the tracks as flac files, they play just fine on everything I've tried, including the SB2 and SB3, and perhaps a dozen different types of media-playing software. On the Transporter (and only the Transporter (that I have been able to tell)), mysteriously, they play back at double speed. I've tried upsampling the music files to Redbook specs (44.1 kHz), in case the oddball sample rate was confusing it, but that didn't help. The problem isn't limited to flac files as well: I've converted a couple of these problematic flac files to aiff, and the problem persists (with the exact same symptoms: plays fine on everything but Transporter). In case it's not obvious, these digitally-ripped LD tracks are the only files that I've encountered this problem with. I have a pretty large music library, containing mostly flac, ogg vorbis and mp3 files, and I have never encountered this issue with the Transporter before, until I did these digital rips from LD. I think that summarizes it. Any ideas? Any help would be appreciated, and if anyone wants to investigate, I can provide a track or two. megarat's Profile: http://forums.slimdevices.com/member.php?userid=66421 View this thread: http://forums.slimdevices.com/showthread.php?t=106680 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
