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Questions tagged [noise-reduction]

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Achieving 20dB reduction with sound absorbers. Sanity check

I have a machine with a loud fan, its specified and measured as 73dB of noise 1m away from the machine. I have been asked to reduce it bellow 55dB. There is a cover that can be lowered that covers the ...
Stonie's user avatar
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How should mass be distributed in a soundproof assembly with >2 panels?

The best "mass air mass" soundproof assembly seems to have 2 panels. Sometimes you want more panels, for example, to better heat insulate a window. Then you get the "triple leaf" ...
David Smolinski's user avatar
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How should mass be distributed in a soundproof 2 panel "mass air mass" assembly? Reducing the coincidence effect?

When both panels are have the same mass/area (ρₛ) and stiffness, there's the coincidence effect. The barrier becomes sound transparent at the resonance frequency of 1 panel. Other things to consider ...
David Smolinski's user avatar
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1 answer
44 views

Best panel assembly for a soundproofing barrier

What are the properties of the best barriers for general outdoor noise? Number of reflective panels How much does the number of panels affect STC (sound transmission class rating)? Many sources claim ...
David Smolinski's user avatar
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0 answers
63 views

Is there a way to use a second microphone to control a noise gate?

I have a condenser microphone that I use as my main computer microphone, but it has an 8 pickup pattern and tends to, e.g., pick up my keyboard. Is there a way to set a noise gate to use the crap ...
Alfons Marklén's user avatar
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1 answer
44 views

Isolating the sound of a hornet or synthesizing it

I made some sound recordings of hornets' wing noise without a directional microphone, so I have background noises like wind, distant traffic, voices, birds, etc. in the recording, too. When trying to ...
U. Windl's user avatar
  • 121
1 vote
1 answer
69 views

Reduce low-frequency noise from nearby rail yard during home renovation

Note: I realize this question might be a bit peripheral to many of the discussions on "Sound Design" stack exchange but I believe that this community has the expertise to answer it. ...
alex_danielssen's user avatar
2 votes
1 answer
76 views

Remove constant noise with Audacity

Looking for ways in Audacity to reduce noise from the following audio. The noise sounds like a constant "shhhhh" to me Previously removed high-pitch noise using the low-pass filter (...
Artem Kochnev's user avatar
2 votes
2 answers
73 views

Remove background sound from sing along recording

I was singing along to a song and then I recorded myself. Now I just want to isolate the sound of my own voice and remove the original sound from the singer. Is it possible to do it in any way? What ...
Abel Tan's user avatar
1 vote
1 answer
82 views

Making old audio clip more audible

I am a total newbie to this sound world and need some help. There is a huge audio clip of almost 3 hours (I have attached a part of them) which I wish to make a bit more audible. Original audio clip ...
maths is fun's user avatar
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1 answer
54 views

Not able to remove noise after recording from headphone output to microphone input

With an audio cable, I have recorded my piano on a computer. One end is in the headphone output of my piano and the other end is in the microphone input of my computer. Now I am trying to make the ...
Reza Saadati's user avatar
2 votes
1 answer
80 views

Auto Noise Reduction and (after that) Volume (dB) Amplification

For podcast broadcasts, we have to edit half an hour of audio recordings 8-10 times a month. Each edit takes more than an hour. The most time-consuming things are noise reduction, amplifying the low-...
Numan Çebi's user avatar
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172 views

How does room Size affect the dB level in the room?

So basically I had an early question and found out that if I have 15 machines running at 80 dB in a room it should end up being around 10*Log(15(10^7.5)) dB approx. 91.76 dB. But how would the room ...
Joe's user avatar
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2 answers
184 views

How much many dB will a room be?

Hey I am not sure if this is the right community for this question, might check if the physics community can answer it. Basically, if I am going to have a room with 15 machines that produce 80dB each ...
Joe's user avatar
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-1 votes
1 answer
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Need advice on hardware and software to manage sound from microphone into Mac for interviews

I am occasionally interviewed via teleconference platforms (sometimes Zoom, sometimes through web interface applications). I need to improve the quality of my audio. I have a high-end (fast) Mac, and ...
mlevin77's user avatar
1 vote
2 answers
77 views

Signal in one channel, noise on both – tool to exploit this for noise reduction

I have a stereo microphone recording that features two sources: The signal is considerably more prominent in the left channel than in the right one. The noise is present in both channels but slightly ...
Wrzlprmft's user avatar
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How difficult is real-time software "noise cancellation" using two input sources

Good active noise-cancellation technology costs money, but delivers great value. I'm wondering if I can obtain half the value at tenth of the price by hacking together something myself. This is for a ...
Peeyush Kushwaha's user avatar
1 vote
1 answer
225 views

Automate pre-processing of sound (noise reduction, compressor, limiter)

I use Audacity to pre-process sound before mixing the takes. I have found good settings for the relevant effects (noise reduction at 24 dB, compressor at 6:1, soft limiter at -10 dB) and the rest is ...
emonigma's user avatar
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1 answer
1k views

Make quiet quieter and loud louder using vst or equalizer apo

Excuse me for my English and my repeats in advance. So i need to do the exact opposite of what normalizers do. My mic has extreme spatial sensitivity(condenser mic without 48v) and it catches even a ...
Numstar's user avatar
0 votes
2 answers
220 views

Automatic noise reduction with results like Audacity

I like Audacity because of its noise reduction. With a recording done in studio, a noise profile, and reduction at 16 dB (with sensitivity 6.00 and 3 frequency smoothing bands), I get a perfect result ...
emonigma's user avatar
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647 views

Building a DIY soundproofing box using plexiglass

I need an enclosure to block outside noise by about 30 to 40 DB. The noise I'm most interested in blocking are in the 0 to 2000 Hz range. I understand that mass is important for blocking (insulating) ...
user173729's user avatar
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1 answer
194 views

Would it reduce the wire noise if I use DI rather than connecting a guitar directly to interface?

I´m pretty new to this, I´m using a foucsrite interface, and I´m wondering if it is worth it to make or buy a direct box for having a balanced signal in order to reduce noise. I don´t need a long ...
Santiago Steib's user avatar
0 votes
3 answers
292 views

Minimizing interface noise floor

I use Ableton, and when using a focusrite interface, without having anything connected to it, I can hear noise if I increase the volume. I don´t know exactly what it is, but I would like to reduce it ...
Santiago Steib's user avatar
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0 answers
119 views

Contact Microphone Noise Isolation

I have a piezo contact microphone which I am using to detect running water in a pipe. I intend to use this signal to determine the time at which water turns on or off in the pipe. However, there is ...
Groger's user avatar
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41 views

How can I reduce noise on vocal track using Audacity

I extracted vocal-only from a song using AI online service and this is the result. Speechless Vocal Only As you can see, there is still noise in this track especially on the lyrics "Whenever they try"....
Steven Sann's user avatar
1 vote
2 answers
310 views

Possible ground loop when recording audio via phantom power into laptop through old audio interface

I recently attempted to start recording with my old audio interface (Audio Kontrol 1) in my new laptop (Windows 10), and got a horrible high-pitched metallic noise (specifically 3 distinct peaks ...
Eddie_westside's user avatar
0 votes
1 answer
84 views

Can this distortion be reduced enough to make speech easily understandable?

Here's a clip; I've got four hours of this in aac demuxed from the video source. Can this sort of distortion be removed in a useful way, leaving understandable speech? And if so, is there a way for a ...
mc510's user avatar
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1 vote
2 answers
177 views

Would a "opto-isolator" help in reducing EMI/RFI from recording guitar?

I am using Reaper with the guitar plugged directly into my interface (Scarlet 2-i2), and I get a decent sound with the TSE 808 -> TSE x50 -> Poulin LeCab -> ReEq. However, I have a high noise threhold ...
Math1000's user avatar
  • 111
0 votes
1 answer
362 views

Why does exporting a file in adobe audition reduce the desired length?

I am trying to reduce an audio noise in adobe audition. I do the noise reduction but when i export the file, the audio length is about 5 seconds shorter. And i cannot sync it with my video anymore. I ...
Milad Heydari's user avatar
0 votes
1 answer
188 views

Why does the tonearm cable from my turntable pick up noise?

I have recently pick up an old turntable (my detailed setup goes below) and facing the background noise issue. I think it is something being picked up by my tonearm cable because when I move it or ...
Alexey Malev's user avatar
3 votes
1 answer
276 views

Denoising studio induced noise and noise due to poor recording

Background Cassette tapes of speeches have been made in 2000 in locations which are not studio like environs for recording (i.e. contain various sources of noise such as fans, folks moving about, ...
beeshyams's user avatar
1 vote
3 answers
2k views

Building a DIY sound isolation box

I need the box to block at least 40 dB of sound. The interior size can be as large as a shoebox. I'm thinking about using a plastic box as a frame, and then pad 2 layers of Dynamat or (one layer on ...
user173729's user avatar
0 votes
1 answer
287 views

Is it possible to perform noise reduction using multiple recordings?

I have an interview recorded using a Zoom H1n audio recorder and and two DSLR internal mics. Is there a way that I can use all three tracks in some sort of noise reduction process that looks for the ...
salmonlawyer's user avatar
0 votes
1 answer
179 views

Is it that bad to run line level audio wires next to AC wires?

I have to place my amplifier+turntable setup away from my working desk. Currently the amp has three devices plugged in: a turntable, a digital audio receiver and a simple jack output from my pc. Both ...
Fabrizio Mele's user avatar
2 votes
1 answer
93 views

Mad scientist: How to cancel out hum of known amplitude from signal of unknown amplitude?

I like investigating real-world phenomena through sound, and this time I am checking out lamps. I have following scheme: I have noticed that each lamp type distorts 50hz mains tone in its own unique ...
xakepp35's user avatar
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1 vote
2 answers
41 views

Suggestion on changing the quality of generated sound

I have built a text to speech system that is generating speech for a given text, however the generated audio has a lot of vibrations in it. Although the speech is clear, it doesn't really sounds ...
Chris Andrew's user avatar
0 votes
2 answers
271 views

Can I automatically select / remove clipping / peaks above -3dB in Reaper?

I have a long recording that I took on a windy day. The wind was intermittent and I was trying to isolate the sound of the snow. I expected there to be some clipping or unwanted loud sections that ...
Audio's user avatar
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0 votes
1 answer
58 views

What devices do acoustical consultants use to measure sound?

What types of devices do acoustical consultants use to measure sound? In my specific case I am looking to measure train noise inside and outside the home. I suspect a decibel meter at the simplest ...
Elijah Lynn's user avatar
0 votes
1 answer
74 views

Does a higher sample rate compensate for quantization errors from higher gain?

While normally bit depth would be associated with a more accurate signal to avoid quantization noise, I am wondering if recording at a higher sample rate will allow a more accurate interpolation of ...
PixelLove3D's user avatar
1 vote
3 answers
304 views

How could I remove static/current noise while noise reduction is not useful

I got a 2hr long video which contains vocal and static/current noise. The "noise reduction" will not only remove the noise but also the vocal. How could I remove the noise only with Audacity? The ...
newBike's user avatar
  • 111
0 votes
3 answers
19k views

(no longer seeking answers) How to filter hiss from amp to speakers? [closed]

I picked up an inexpensive 2x120W amplifier to drive my 8-ohm desktop speakers, and it produces a bit of a hiss, particularly when the treble is mixed further up which is what it seems to need. Is ...
Davis Diercks's user avatar
1 vote
1 answer
194 views

Interference in new audio setup - how do I get rid of it? Possible ground loop?

I just bought M-Audio BX5 monitors and connected them to my Creative Sound Blaster X-Fi Titanium sound card with a stereo TRS to an unbalanced TRS (mono) in each speaker. The sound is fine, but ...
Amunak's user avatar
  • 119
-1 votes
3 answers
2k views

Extract lecturer voice and ignore background

I know questions similar to mine have already been posted and answered, but I didn't find one that answers my specific question. I have an audio file where I have a teacher (let's call him Fred) who ...
Vahid Pazirandeh's user avatar
0 votes
2 answers
617 views

The higher the gain the more white noise

I use the samson c01 condensor mic with the scarlet solo 2nd gen interface, I use logic pro x to record on. I record vocals in the closet with blankets and everything surrounding so there is no ...
Jone's user avatar
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3 votes
3 answers
11k views

How can I eliminate sounds below a certain threshold?

Using Audacity, I can highlight a section of an audio file, select Effects > Noise Reduction > Get Noise Profile, then Select All, and then again Effects > Noise Reduction, and this time "OK" to ...
B. Clay Shannon-B. Crow Raven's user avatar
1 vote
3 answers
687 views

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

My colleague and I attended a conference and made a number of interviews in a crowded hall full of people. We are completely new to video recording: it was just Panasonic HC-V777 camcorder (~300$) ...
Stanislav Pankevich's user avatar
-1 votes
1 answer
654 views

Does a lav mic pickup noise?

Recently, I switched from a condenser mic to a dynamic mic: Is a dynamic mic better than a condenser mic in terms of outside noise? The dynamic mic almost completely ignores car noise from outside. ...
Omid Kamangar's user avatar
0 votes
1 answer
5k views

Reducing hiss on H6

I'm a novice having some issues making a recording, and could use some advice. I want to make ambient recordings, so need to reduce all background noise. When I say 'background' noise, I mean the ...
R14's user avatar
  • 43
1 vote
2 answers
510 views

Free software to remove "sound pattern" from recording?

I am trying to remove undesirable sounds from a recording: I have a video conference recording that includes sounds such as "Has joined the conference" and "has left the conference" that I am trying ...
Yannickv's user avatar
  • 113
-1 votes
2 answers
5k views

Removing Background Conversations in Audition [duplicate]

I recorded some spur of the moment interviews using my DSLR at an event. The people I interviewed came out well enough for my ears to discern what they are saying, but there is a lot of background ...
Timothy R. Butler's user avatar