5 votes

Can noise be reduced by 7 decibels with a curtain?

They missed out one vital piece of information - at what frequencies? They'd need to be made of lead to stop anything below 100Hz… I wonder whether their mosquito-repellant curtains work when they'...
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  • 7,039
4 votes

Isolate a subwoofer from the floor below

How much money have you got to spend & would you consider replacing the floor entirely with a new one made of solid concrete, not connected to the current walls or floor? That is not as frivolous ...
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  • 7,039
4 votes

Is it really impossible to isolate the vocal from music clearly? if yes... what is this?

I would imagine the remixer was provided with a vocal stem.
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  • 41
4 votes
Accepted

Strip silence from voice recording

Audacity has a Truncate Silence effect (Effect > Truncate Silence...) which should be able to do what you want: There are many other alternatives in other applications - but these are for Windows or ...
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3 votes
Accepted

Is there any way to subtract or cancel background music picked up from a microphone, if I have the isolated background music?

My short answer would be that it is virtually impossible but depends on how good results you expect. The solution your intuition draws you to, and which would work in certain cases, is phase ...
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  • 316
2 votes

How to do frequency or spectral subtraction of two audio tracks?

In the case where your two audio signals S1[n] and S2[n] are of same length, and we are speaking of discrete time, discrete value signals, the DFT being a linear transform : DFT (S1[n] - S2[n]) = ...
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  • 2,613
2 votes

Speech separation of individuals from a phone recording

Summary: Use a noise removal plugin that can learn noise to produce a track with one person "noisereduced" and use this track as sidechain source for a noise gate. Here is how to achieve it with a ...
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2 votes

Combining two clicky copies of the same record into one good recording

Honestly, I think you'd have a much simpler task if you tried some de-clicker software on the best of the pair than attempt to keep two independently-recorded analogue tracks in prefect phase-sync for ...
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  • 7,039
2 votes

Recording our dreams: Ideas for speeding up post-analysis?

Many handheld recorders have a feature that automatically starts a recording when a certain dB threshold is reached. That might save some time and file space. You'll have individual files of hopefully ...
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  • 101
2 votes

Recording our dreams: Ideas for speeding up post-analysis?

Use a gate! The following process will let you isolate what you need. First of all find the frequency of the voice, i suspect for a female voice an area between 250-800 should capture the main body ...
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  • 1,460
2 votes

Is there any way to subtract or cancel background music picked up from a microphone, if I have the isolated background music?

i know this is an ancient thread, but it still shows up in search results! Pretty silly for the top reply to be "nope sorry can't be done". Depending on where the speaker's microphone was, ...
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2 votes

Software for vocal removal?

Evan if there is, it would be most likely based on stereo cancellation and eq-ing so it might be a better idea do them the proper way instead of relying on software
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  • 844
1 vote
Accepted

"Super W" neoprene pads for electronic drum decoupling platform?

I would approach this from the perspective of having a rigid coupling between the seat, the drummer and the entire kit. Consequently, I think you would need a "floating" floor setup that can be ...
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  • 8,394
1 vote

What devices do acoustical consultants use to measure sound?

Well I'm not a consultant but what you are probably looking for is a dB meter and I would guess there's not really any reason to measure frequencies other than curiosity. If you are considering ...
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1 vote

How to isolate certain voices in video?

There is no way to do what you want. Human voice, no matter what voice timbre people have, is pretty much in the same frequency range. That said, you can at least filter out some of background noise ...
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1 vote

Is there any way to subtract or cancel background music picked up from a microphone, if I have the isolated background music?

This is a classic application of adaptive echo cancellation (speaker phones need it to remove the speaker output from the microphone input which would otherwise appear as an echo at the remote speaker'...
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1 vote

Is there any way to subtract or cancel background music picked up from a microphone, if I have the isolated background music?

Adobe Audition has a built in Noise Reduction effect that works really well. Effects>Noise Reduction/Restoration. You can use this to capture the noise profile of the background music or other sounds ...
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1 vote

Sound proof a room, car noise

What microphone and what working distance are you using? The ultimate goal is maximizing the "Signal to Noise Ratio" (SNR) There are TWO ways of doing that, and typicaly you can use a combination of ...
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1 vote

Creating a Floating Sound-Proof (Sound-Isolation) Room

i don't think you are in a bad situation at all. first of all a very usefull forum by mr John Sayers. http://johnlsayers.com/phpBB2/index.php <- read a lot here! Blocking the sound needs mass as ...
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  • 1,460
1 vote

Creating a Floating Sound-Proof (Sound-Isolation) Room

Sound is blocked only by mass. Either solid mass, or air mass (over a distance). Of the two alternatives you have shown, certainly you have more chance of success with the solid option vs the hollow ...
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1 vote

can I use Hearing protectors with my earbud headphones for a better listening experience?

Many professional sound recording crew on big-budget productions use their earbuds with hearing-protectors over the top for critical monitoring in high noise situations. The COMFORT factor will be ...
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1 vote

can I use Hearing protectors with my earbud headphones for a better listening experience?

While having tried those stuff only once - I'm not sure they are really that comfortable. An usual place one might find them is on construction sites where drilling is required or on a shooting range ...
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  • 844
1 vote

Is it really impossible to isolate the vocal from music clearly? if yes... what is this?

On very few occasions you may be able to extract the center track from a song cleanly, which is usually the vocals and basic instruments like drums which can be somewhat EQ-ed out. In this case, ...
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1 vote

Speech separation of individuals from a phone recording

Five years later and there are a number of cloud services that offer to solve this challenge. Services https://otter.ai/ and https://cloud.google.com/speech-to-text offer some alternatives for the ...
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1 vote

Isolating "common" portion of multiple samples

You probably already thought of this, but if there is a common sound/signal frequency wise, simply taking the average of all the FFTs will attenuate the uncommon parts, while the common part remains ...
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1 vote

truncating silent parts of dialogue

Use a noise gate with a fast attack and medium release. So long as the threshhold is above the floor noise/background noise, it will cut off any sound during the silent parts of the track. There are ...
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