Hi,
Well...
I just downloaded your 2 files, and the WAV has a lot more hiss than the FLAC!, played in Audacity, Adobe 1.5 and GoldWave.... (earphones with volume right up), the FLAC has NO hiss, the WAV has VERY CLEAR hiss...
I wonder what this could be? It's only happening with the dither shaped WAV's, the exact same process with dither set to NONE leaves NO hiss - so it's not that this happens with every WAV file I play.... I just converted the original FLAC to WAV with dbpoweramp, and there's no hiss in the WAV... I have other WAV's on my HD and no hiss...
All I can say is I'm only finding hiss with WAV's that have been through Dither Shaped Audacity...
I really don't know where to go from here!, because I have no idea what it could be! (I'm sure you've tried earphones with volume right up????)
change dither to none? in quality settings?
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This forum is for Audacity on Windows.Please state which version of Windows you are using,
and the exact three-section version number of Audacity from "Help menu > About Audacity".
Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.
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bomber1978
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Re: change dither to none? in quality settings?
How very peculiar.bomber1978 wrote:I just downloaded your 2 files, and the WAV has a lot more hiss than the FLAC!
1) Import both files into Audacity.
2) Select the first 1 second in both tracks.
3) Apply the "Amplify" effect with default settings. (Obviously the first 1 second in both tracks is being amplified by exactly the same amount, which in this case will be +50 dB.
4) Compare the level in the first 1 second - do you agree that it is the same in both tracks?
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bomber1978
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Re: change dither to none? in quality settings?
Hi,
When I go to File-Import your FLAC Audacity says it can not find FFMPEG, however your FLAC will open with File-Open.
My other FLACS will open with File-Import, just having the problem with the one you sent me...
When I go to File-Import your FLAC Audacity says it can not find FFMPEG, however your FLAC will open with File-Open.
My other FLACS will open with File-Import, just having the problem with the one you sent me...
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Robert J. H.
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Re: change dither to none? in quality settings?
After solving the case of the odd Aiff file, the next thrilling adventure looms ahead, the "strange case of Mr Flac".
I must admit that I am baffled too.
It seems that the wave file isn't shaped at all - just plain white noise.
The two files have apparently the same sample values but differently distributed.
I must admit that I am baffled too.
It seems that the wave file isn't shaped at all - just plain white noise.
The two files have apparently the same sample values but differently distributed.
Re: change dither to none? in quality settings?
Weird indeed.Robert J. H. wrote:It seems that the wave file isn't shaped at all - just plain white noise.
The exported WAV file has got "Triangle" dither when it should have "Shaped" dither.
I wonder when that bug crept in.
I'll raise this with the developers.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
Re: change dither to none? in quality settings?
It's only happening when exporting stereo WAV files, not mono WAV files.steve wrote:The exported WAV file has got "Triangle" dither when it should have "Shaped" dither.
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Re: change dither to none? in quality settings?
I've reported the issue to the developers.
This bug has been present since at least the 2.0.0 release. Obviously not many people listen to silence with volume cranked all the way up
This bug has been present since at least the 2.0.0 release. Obviously not many people listen to silence with volume cranked all the way up
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
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bomber1978
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Re: change dither to none? in quality settings?
Most definitely not required to listen to silence with the volume all the way up to notice it....steve wrote:I've reported the issue to the developers.
This bug has been present since at least the 2.0.0 release. Obviously not many people listen to silence with volume cranked all the way up
I can hear that the WAV has more hiss than the FLAC with headphones and my laptop volume not even half way up, in fact probably less than 1/3 way up, below even average listening volume...
Re: change dither to none? in quality settings?
You're right, the dither noise in 16 bit stereo WAV files is much noisier than it should be.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
Re: change dither to none? in quality settings?
Good news - one of the developers has found the cause of the problem and has created a fix for it.
The bad news is that the fix may be too late to get into the Audacity 2.0.4 release, but if not it will certainly be in 2.0.5.
If the fix does not make it into 2.0.4 then I'd highly recommend changing the dither setting to "Triangle", which is almost as quiet as "Shaped" and is equally good at preventing harmonic distortion.
Thanks bomber1978 for reporting this problem and for your persistence (in spite of me telling you that it was nothing to worry about
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Surprisingly this problem has existed for at least 4 years. I've looked at this before, but it is easily missed when testing because it does not occur with mono files, it does not occur when dither is applied within a project, it does not occur with FLAC export, it does not occur with other types of dither. Also it is expected that "some" noise should be created by dither, and when testing with "real world" audio recordings it is difficult to tell that the wrong type of noise is being added. It only occurs when exporting stereo files , but that is of course a common case, so is very important.
The bad news is that the fix may be too late to get into the Audacity 2.0.4 release, but if not it will certainly be in 2.0.5.
If the fix does not make it into 2.0.4 then I'd highly recommend changing the dither setting to "Triangle", which is almost as quiet as "Shaped" and is equally good at preventing harmonic distortion.
Thanks bomber1978 for reporting this problem and for your persistence (in spite of me telling you that it was nothing to worry about
)Surprisingly this problem has existed for at least 4 years. I've looked at this before, but it is easily missed when testing because it does not occur with mono files, it does not occur when dither is applied within a project, it does not occur with FLAC export, it does not occur with other types of dither. Also it is expected that "some" noise should be created by dither, and when testing with "real world" audio recordings it is difficult to tell that the wrong type of noise is being added. It only occurs when exporting stereo files , but that is of course a common case, so is very important.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)