Stereo Tool :: Stereo Tool 6.10

Quote:

Hans,

A question completely off topic of the clipper. When using low latency, the quality slider has to be at 1.0 because if not it creates HORRIBLE distortion/artifacts/nasty sounds.

That makes sense. I'll explain briefly.

-If you set the latency at 4096, quality at 100%, you'll get some artifacts but they are spread over the entire 4096 samples and are nearly unnoticeable.
- Now if you lower the quality to 50%, the artifacts are "condensed" more at regular intervals. So they are not spread out nicely anymore. So basically half of the time there are no artifacts, and the other half of the time they are twice as loud. Now, at latency 4096 they are still nearly unnoticeable.
- If you lower the latency to 2048 and set the quality back to 100%, you keep the same artifacts as for the 4096/50% situation, but all of the time. So they are louder, but since they are spread out nicely in time, you should hardly notice them.
- Lower the quality slider again, and they get condensed again.

As you can imagine, at the time where you reach latency 512, the artifacts have been increased (MORE than doubled) 4 times. Lowering the Quality again to 50% doubles the artifacts again, and stops them from being spread out nicely, so you'll hear them much clearer.

So at low latencies ALWAYS keep the quality slider at or very close to 100%. If you need to lower the CPU load, try using the Loudness strictness slider etc.

Author:	Luke [ Fri Sep 09, 2011 9:20 am ]
Post subject:	Re: Stereo Tool 6.10
Quote: Hans, A question completely off topic of the clipper. When using low latency, the quality slider has to be at 1.0 because if not it creates HORRIBLE distortion/artifacts/nasty sounds. I don't know why that is but I think that should be fixed in a way to act like BBP. BBP has Extra Low CPU+Low Latency mode and that is great for watching video that uses a lot of CPU to decode. Just a thought. Had/have a simular issue. For me it had something to do with the saved preset that is not compatible with the new version. Press the reset button, adjust and try again. I think we need to find out which triggers it since I don't like fine adjusting presets for hours and days and then it becomes unusable in another version.

Author:	eldoradofm [ Fri Sep 09, 2011 12:57 pm ]
Post subject:	Re: Stereo Tool 6.10
Quote: Quote: in the loudness section, how does the remove dc part work? Is this also some sort of hpf? Can you explain how it works? No, assymmetrical audio can cause a DC offset when it's clipped. This setting does not allow that to happen - which has the disadvantage that more audio gets clipped. So when there's assymetrical audio is it being driven harder in the clipper to overcome the dc offset? So one side of the wave form will get clipped harder then the other?

Author:	hvz [ Sat Sep 10, 2011 1:45 am ]
Post subject:	Re: Stereo Tool 6.10
Quote: Hans, A question completely off topic of the clipper. When using low latency, the quality slider has to be at 1.0 because if not it creates HORRIBLE distortion/artifacts/nasty sounds. That makes sense. I'll explain briefly. -If you set the latency at 4096, quality at 100%, you'll get some artifacts but they are spread over the entire 4096 samples and are nearly unnoticeable. - Now if you lower the quality to 50%, the artifacts are "condensed" more at regular intervals. So they are not spread out nicely anymore. So basically half of the time there are no artifacts, and the other half of the time they are twice as loud. Now, at latency 4096 they are still nearly unnoticeable. - If you lower the latency to 2048 and set the quality back to 100%, you keep the same artifacts as for the 4096/50% situation, but all of the time. So they are louder, but since they are spread out nicely in time, you should hardly notice them. - Lower the quality slider again, and they get condensed again. As you can imagine, at the time where you reach latency 512, the artifacts have been increased (MORE than doubled) 4 times. Lowering the Quality again to 50% doubles the artifacts again, and stops them from being spread out nicely, so you'll hear them much clearer. So at low latencies ALWAYS keep the quality slider at or very close to 100%. If you need to lower the CPU load, try using the Loudness strictness slider etc.

Author:	baires0314 [ Sat Sep 10, 2011 2:56 am ]
Post subject:	Re: Stereo Tool 6.10
Quote: Quote: Hans, A question completely off topic of the clipper. When using low latency, the quality slider has to be at 1.0 because if not it creates HORRIBLE distortion/artifacts/nasty sounds. That makes sense. I'll explain briefly. -If you set the latency at 4096, quality at 100%, you'll get some artifacts but they are spread over the entire 4096 samples and are nearly unnoticeable. - Now if you lower the quality to 50%, the artifacts are "condensed" more at regular intervals. So they are not spread out nicely anymore. So basically half of the time there are no artifacts, and the other half of the time they are twice as loud. Now, at latency 4096 they are still nearly unnoticeable. - If you lower the latency to 2048 and set the quality back to 100%, you keep the same artifacts as for the 4096/50% situation, but all of the time. So they are louder, but since they are spread out nicely in time, you should hardly notice them. - Lower the quality slider again, and they get condensed again. As you can imagine, at the time where you reach latency 512, the artifacts have been increased (MORE than doubled) 4 times. Lowering the Quality again to 50% doubles the artifacts again, and stops them from being spread out nicely, so you'll hear them much clearer. So at low latencies ALWAYS keep the quality slider at or very close to 100%. If you need to lower the CPU load, try using the Loudness strictness slider etc. That makes perfect sense. Thanks for explaining.

Author:	Bojcha [ Sat Sep 10, 2011 3:44 am ]
Post subject:	Re: Stereo Tool 6.10
Hans.. Something i don't understand about 1+2 option for bands 1 and 2. 1+2 enabled - If i have band1 at 50Hz and band 2 at 100Hz and play 3 sine tones 50, 75 and 100Hz.. all 3 tones should play at about same level, but they don't. 50 and 100Hz are 'good' but 75Hz is much lower. I guess because both bands are pushing it twice. Can something be fixed there?

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Author:	RodeoJack [ Sun Sep 11, 2011 5:11 pm ]
Post subject:	Re: Stereo Tool 6.10
Hans... Can you give me a brief explanation of what your slider percentages are relative to? I'm having a bit of trouble, understanding what a 170% maximum clipping level actually means and how that number relates to the other settings in the processor. If you attach a meaning or number to what the processor puts out after it's done its work, how does that relate to percentages that are so high? Thanks. Jack

Author:	eldoradofm [ Sun Sep 11, 2011 11:12 pm ]
Post subject:	Re: Stereo Tool 6.10
There's a problem with Low Quality / Low Latency output. When i select sample rates higher then 48000 i hear more noise for every increase. When i select Bypass all i don't hear a difference in output.

Author:	eldoradofm [ Mon Sep 12, 2011 12:56 am ]
Post subject:	Re: Stereo Tool 6.10
Another bug, i have l/r swap issue again. This time on normal output when i change buffer size. I don't see difference in output meters this time but i hear it on the output. Problem seems to be only with asio for now.

Author:	hvz [ Mon Sep 12, 2011 1:05 am ]
Post subject:	Re: Stereo Tool 6.10
Hey everyone, I'm at the IBC almost everyday so I have little time to respond to posts here. Short reply about the 170%: 100% is 0 dB. So 170% means that I'm clipping at a higher level than 0 dB. That is useful because in the end the different bands are added, and if one band goes up while the other one goes down clipping above 100% helps to get more of that band. Hope that's somewhat clear, I'll write a manual at some point...

Author:	RodeoJack [ Mon Sep 12, 2011 5:15 am ]
Post subject:	Re: Stereo Tool 6.10
OK. I can work with that. Thanks!

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