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1
No relation; they are just two of the more well-known free resamplers available.

As Wombat mentioned, SSRC (unlike SoX) introduces sub-sample delays, which complicates 'null' testing.

Note that SRC (a.k.a. libsamplerate) is a different resampler again.
2
Ogg Vorbis - Tech / Re: OGG chaining libvorbis android
Last post by lithopsian -
Multiplexing is not a way to concatenate two streams into a single stream. It is a way to have two (or more) concurrent but separate streams. Typically these will be streams with different codecs such as a video and audio stream, but it can be used for multiple audio streams such as alternate languages or sequences in a game. You wouldn't normally play two multiplexed audio streams at the same time, and in any case that's not what you want. The strict "Ogg Vorbis I" specification doesn't allow multiple multiplexed audio tracks and some players won't work properly with them. You might want to have a play just for fun: oggz-merge will turn multiple streams into a single multiplexed file of parallel audio tracks.

The simplest way to concatenate two streams is just to re-encode. Foobar should do this for you. There are also explicit ogg "joiners", programs that will just join two ogg streams for you without messing about. ffmpeg will do it on Linux, but there is also oggCat. I believe that joining Vorbis streams gaplessly effectively requires "playback" and so would be considered to be re-encoding with a small loss of quality but there shouldn't be an issue with doing this once,
3
Ogg Vorbis - Tech / Re: OGG chaining libvorbis android
Last post by silent10 -
It does sound like you don't really want to chain these two pieces of audio. It sounds like the simplest way to concatenate two audio streams into one stream, but that's really not what its doing. If you really want gapless concatenation of two streams, then you should re-encode into a single stream. In general you'd then have to decide what single set of metadata to have, but perhaps not an issue in your case.

Is multiplexing an option if I only want decoders to see only one track? If not then how to concatenate two audio streams into one stream?
4
Ogg Vorbis - Tech / Re: OGG chaining libvorbis android
Last post by lithopsian -
So vlc is borked then ;) Most software treats chained ogg streams as separate tracks. This is almost inevitable since each chained stream can have separate metadata. I'd never noticed before that vlc doesn't, but then chained ogg files are pretty rare.

My Linux vlc loads all chained streams as a single "track" with the metadata of the first stream. It can successfully seek from a play position in the first stream to a play position in the second stream. If it doesn't do so on Android then it may be a bug. I'm using vlc v2.0.3, you may well have a different version although probably newer. My vlc does get itself slightly messed up, counting play time separately in the two chained files so that the playing time suddenly resets to zero in the middle of the single track and never reaching the total track time - also the playtime in the seekbar is off, not quite matching the play position it actually seeks to. vlc generally is quite poor at determining the length of tracks without playing them first.

It does sound like you don't really want to chain these two pieces of audio. It sounds like the simplest way to concatenate two audio streams into one stream, but that's really not what its doing. If you really want gapless concatenation of two streams, then you should re-encode into a single stream. In general you'd then have to decide what single set of metadata to have, but perhaps not an issue in your case.
5
I am looking for analytical/non-colored/studio headphones (semi-open or closed) and dac+amp.

The answer is here: https://hydrogenaud.io/index.php/topic,114222.msg940869.html#msg940869
6
What I still don't understand: SSRC and SoX seem to be somehow related. What exactly is the difference between them? Or are these just different names for the same resampling algorithm?
7
Ogg Vorbis - General / Re: nokia 222 + ogg vorbis?
Last post by sanskrit44 -
i see, thanks a lot.

p.s.: out of curiosity, does there exist a compact non-touch, non-smartphone offering an out of the box ogg vorbis (or even flac) support these days?
8
Audio Hardware / Re: Analytical headphone + dac&amp
Last post by KozmoNaut -
And forget all about opamp rolling and "cleaner power", it's audiophool nonsense.
As I understand some op-amps distorts/colors signal more than others and 5€ wall charger will not be a good choice, not that I am going to invest a lot in "clean power", but I guess it needs to be decent.

The rub here is that the circuits are designed around the characteristics of particular opamps, so by switching them out, the results can be extremely unpredictable.

Quote
Actually, I would be willing to know, which headphones are being used by professionals to master records in the biggest studios worldwide. I was surprised when I found out that famous Abbey Road recording studio is apparently using the old DT102:

Yes, because they work. Of course they do look rather old-fashioned, but it's the sound quality that matters. And the fact that the sound engineers have lots of experience with the sound signature of that particular headphone, letting them achieve consistent results.

Also, I would assume they use the DT100, as the DT102 is a one-ear model ;-)

The voltage out should be regulated and filtered on device anyway, otherwise you are going to have problems.
I agree with you, but it would be hard to expect to get proper implementation of regulation and filtering in couple hundred $/€ amplifier.

Why would that be? It's not particularly expensive to implement decent regulation and filtering.
9
Audio Hardware / Re: Analytical headphone + dac&amp
Last post by kose -
The voltage out should be regulated and filtered on device anyway, otherwise you are going to have problems.
I agree with you, but it would be hard to expect to get proper implementation of regulation and filtering in couple hundred $/€ amplifier.
10
General Audio / Volumio UPnP
Last post by danielfelix -
Hi, I want to use Foobar with Volumio via UPnP, I installed the required plugins (foo_out_upnp and Foo_upnp) but only a white noise is heard. In the interface of Volumio I see the data of what I am reproducing in Foobar.
What am I doing wrong?

Daniel