I'm really sorry to bore ☺ but have 'rumble' modulating the entire audio in some LP rip.
The 'rumble' ones start at 7Hz up to 20Hz and the 'culprits' are the fabulous used cartridges
--> and the entire audio spectrum is modulated by these frequencies.
Before extraction, have a way to cut frequencies below ~15 or 20HzHz(for example)?
edited: I thank Lou to correct the right word 'rumble' where i wrote 'humble'!
i'm not 'humble' to write the wrong word!
cheers Lou and thanks! :-)
I forgot to comment WW
This 'rumble' didn't just come from HRM's LPs, it came from rutraker,
kpnemo and many other places 'around the world' for a long time.
This is why it is “impossible” to ask for better features,
If I do this, I risk being banished from the kingdom and sent to the dungeon with bonus daily lashes.
As i can't explain with words,
i can show a sample where the subsonic modulate the entire audio like runmble.
Atention in the start and in the final of trhe music cos is the proove that the whole music is modulated and no way to remove this mopdulation from background...or have a way?
'The Beatles - Can't buy Me Love' ► LP rip done by a magnific uploader 'here and there'
😆😉😊😁🙂😍
I've simple answer to the problem of bad sounding rips. Unless it's historically rare. delete it - they are too much hassle.
The emoji problem will be a personal browser issue😍
Wikipedia defines modulation: In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a separate signal called the modulation signal that typically contains information to be transmitted.
Your modulated music is the modulated signal, the carrier is the noise signal - that you call "humble" (I misread it for rumble, which is an old turntable issue).
What you are saying is correct if you subtract the noise signal you have the original without the "Humble" - you have in fact, demodulated the signal.
The issue is defining what the noise signal is in the first place as it won't be a steady state signal, it is only if you can accurately quantify the noise signal, that you can remove it.
Spectral de-noising works by guessing what this noise is and applying known templates to remove it and or using AI to model it before removing it.
If the noise is pervasive throughout various frequencies, I would use spectral de-noising to remove it.
https://youtu.be/ycpZlvm0v6Y?feature=shared
Set up a high pass filter to >20Hz everything above will fly through, the rumble will be rolled off.
The problem is that if they are modulated then you will have existing harmonics colouring the sound all the way throughout the audio frequency. If it's pure rumble then no issue.