6 votes

Why do some audio amps use AC while others use DC

Is AC current fundamentally better as a working current when it comes to amplifying audio signal? No. If anything, using an AC power supply makes it more difficult to have low noise. The circuits ...
Hobbes's user avatar
  • 1,728
5 votes

How can I make a voice in the background come to the foreground and remove foreground noise?

Short, honest answer: nope, forget it. In principle it's possible nowadays to separate any part of a signal, using software like iZotope RX or the (rather dated, by now) Algorithmix Renovator. These ...
leftaroundabout's user avatar
5 votes
Accepted

Why do some audio amps use AC while others use DC

The type of current is actually completely irrelevant as all transmitted power is AC. Unless you are driving your amplifier from batteries, everything has to be converted at some point to DC. The end ...
Mark's user avatar
  • 8,890
4 votes

Do XLR cables wear out?

Yes, they do wear out eventually. As pointed out already, the life time depends greatly on use and quality. Even with a cable that seemingly works sound quality may get drastically reduced. See below. ...
Michael Hansen Buur's user avatar
4 votes
Accepted

Faking depth and stereo separation?

It depends on what you mean by “cleaner” really. Is this a professional or amateur recording? If you just want to improve the recording, then there are many things you can try. EQing to get a better ...
n00dles's user avatar
  • 2,584
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 ...
Tetsujin's user avatar
  • 8,691
4 votes

Is it possible to remove a whistle-like noise from audio?

A very High-Q notch EQ filter can do the trick, although I would probably recommend spectral cleaning to nail this. Izotope RX Advanced Spectral Cleaner is the way to go.
Mark's user avatar
  • 8,890
3 votes

Why is there noise in my spectrum analyser despite having no external devices plugged in?

All audio electronics create noise, including your interface itself. It's actually pretty good that the self noise of the interface is at around -100 dB. Even when all other sources of noise are ...
Todd Wilcox's user avatar
  • 2,280
3 votes

Remove hiss from audio

To fully discard the option of the method you tried make sure that before you invert the phase of the left channel you bring both channels to the center field; then you invert the phase and judge if ...
Andrés G. Duarte's user avatar
3 votes

Noise in usb audio interface?

This could be a variety of things but there are a few things you can do to trouble shoot. Ensure that everything is plugged into the same outlet. In some cases crossed grounding can cause buzzing if ...
Dave's user avatar
  • 1,010
3 votes

Why am I hearing weird static nosie on my speakers

I have figured out the problem. We had a netgear wifi router connected to the mixer. It is supposed to enable wireless connectivity to our mixer. If I turned that off, the mic signal doesnt drop and ...
franklins's user avatar
  • 151
3 votes

What is the best way to reduce background noise on a video recorded with a camcorder (background chatter)?

There are automated algorithms like those you tried in iMovie, the ones in Audacity might be worth a try but if you want better results you should individually edit phrases. Software like izotope RX ...
Dalv Olan's user avatar
  • 852
3 votes
Accepted

Denoising studio induced noise and noise due to poor recording

Firstly, do any and all processing in WAV files. If your source material is on CD, then rip to 44.1kHz/16bit WAV and process at 24-bit in your software. Do not transcode via mp3. Tracks like 104b ...
Mark's user avatar
  • 8,890
3 votes
Accepted

Does DC translate to sound?

Sound is derived from vibrations which in turn are generated or represented by changing current levels. Sound can never be derived from a static voltage or current. Your statement that "DC should ...
Mark's user avatar
  • 8,890
3 votes
Accepted

What is causing the 5.5 kHz noise in my recording setup

This is a broad sweep at the issue, some guesswork & experimentation required. First of all, if you have an alternative DAC try it, no matter how basic, just to eliminate the simplest explanation....
Tetsujin's user avatar
  • 8,691
3 votes

Background Noise Removal in Audacity 3.0.2

As you've not uploaded a sample, I can't say for sure, but the first step should be trying to understand where exactly the noise is. To do this, you can use spectrogram view that shows your audio file ...
salmonlawyer's user avatar
3 votes

Background Noise Removal in Audacity 3.0.2

If you have a podcast file consisting only of human voices, you owe it to your future self to check out some AI-powered audio tools for cleanup. I've done the “conventional” ways, including the ...
TORLEY's user avatar
  • 469
3 votes
Accepted

Is this a good way to eliminate nose whistle from a recording?

Based on a comment I got that said "if all you have is EQ, then it's the best you can do. Modern "AI"-based noise reduction can probably do a far better job in one click", I found ...
Excrubulent's user avatar
3 votes

Scratchy noise with studio monitors

Trying with your laptop was a great idea and tells us what the problem likely is. There’s probably some kind of grounding issue with your desktop computer and that’s causing noise in the ground ...
Todd Wilcox's user avatar
  • 2,280
3 votes
Accepted

my USB mic is on an arm and connected through a shock absorber, still picks up noise from my mouse

You're going to need to fasten the arm to something else, not connected physically to the desk. I have a mic very similar to that [I bought it just to answer questions like this] & the 'shock ...
Tetsujin's user avatar
  • 8,691
3 votes

Electrical hum?

There are two ways to tackle this - the proper way & the easy way. The proper way is to identify & isolate your source of interference. 'Hum' is going to be something at mains frequency. You'...
Tetsujin's user avatar
  • 8,691
2 votes

What is causing "metallic" sound/noise when I speak?

It sounds very much like some sort of noise reduction/gating/expansion is "taking out" most of the noise, which is why you only hear it when you speak. It is there on the source the whole time ...
Michael Hansen Buur's user avatar
2 votes

What is causing "metallic" sound/noise when I speak?

It might be your headphones leaking into your microphone. The sound of your voice in the headphones is a tiny bit delayed from the acoustic sound of your voice, and the leakage from the headphones is ...
Simon White's user avatar
2 votes

USB microphone introduces buzzing after a few minutes of listening

Had the same problem for years, until I read this thread and decided to try some diagnostics testing before buying a new mic. Whaddya know? Problem basically solved. Mic AT2020 USB DAW: Reaper Same ...
Bumy Goldson's user avatar
2 votes

Buzzing noise with Condenser Microphone + Phantom advice

According to the information on the Amazon.UK page you cited, the Floureon® BM-800 microphone DOES NOT use phantom power. There is no reason to use the InnoGear® 48V Phantom Power Supply at all. Since ...
Richard Crowley's user avatar
2 votes

USB input high-pitched whine

I have the exact same interface and was hearing the exact same noise, except it was not there when I bought the interface. It does seem to be a power-supply-related problem, turns out the noise only ...
Rafael Almeida's user avatar
2 votes
Accepted

Mixing by aux out to aux in

1.This method will work with some sound deterioration. There will be significant latency if you're using default drivers (non-asio) 2.Sound source coming from master won't deteriorate. Neighter ...
Dalv Olan's user avatar
  • 852
2 votes

Who makes the quietest microphone?!

https://www.lewitt-audio.com/microphones/lct-recording/lct-540-subzero The Lewitt LCT540 has the quietest specs I've seen available in a commercial mic.
Bennett Shapiro's user avatar
2 votes
Accepted

How can I fix robotic distortion from an audio track?

Buffer underrun might have caused that distortion to the audio. Buffer values can be increased in the audio driver section of the software or DAW you're using so that the issue disappears when ...
Dalv Olan's user avatar
  • 852

Only top scored, non community-wiki answers of a minimum length are eligible