Questions tagged [noise-reduction]

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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-...
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42 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 ...
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76 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 ...
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-1 votes
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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 ...
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1 vote
2 answers
68 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 ...
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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 ...
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1 answer
102 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 ...
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650 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 ...
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1 answer
75 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 ...
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343 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) ...
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1 answer
80 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 ...
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82 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 ...
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51 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 ...
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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"....
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2 answers
142 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 ...
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1 answer
80 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 ...
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2 answers
109 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 ...
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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 ...
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1 answer
122 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 ...
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3 votes
1 answer
237 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, ...
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1 vote
3 answers
1k 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 ...
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0 votes
1 answer
189 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 ...
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1 answer
102 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 ...
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2 votes
1 answer
85 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 ...
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2 answers
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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 ...
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2 answers
157 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 ...
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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 ...
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0 votes
1 answer
51 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 ...
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1 vote
3 answers
265 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 ...
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3 answers
18k 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 ...
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1 vote
1 answer
134 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 ...
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-1 votes
3 answers
1k 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 ...
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2 answers
466 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 ...
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3 votes
3 answers
9k 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 ...
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1 vote
3 answers
658 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$) ...
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-1 votes
1 answer
626 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. ...
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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 ...
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2 answers
433 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 ...
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-1 votes
2 answers
4k 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 ...
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0 votes
1 answer
71 views

Sound proof a room, car noise [duplicate]

I am trying to record my own voice in my room, and the main problem I have is the noise generated by the cars outside. My house is very close to the street (maybe 15m) and although my room has a UPVC ...
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1 vote
1 answer
2k views

How to remove hiss in Adobe Audition?

How can I remove hiss in a recording (due to too-low level preamp)? This was a live recording that I took from the mixing board on a Tascam, at 24-bit 96kHz recording. It has the direct input from ...
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1 vote
2 answers
2k views

How to cancel out siren noise as much as possible?

I have a great sensitivity to noise and use earplugs etc for sleep and have fans going, but unfortunately due to various limitations including finances, I need to stay where I am at present, which is ...
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4 votes
3 answers
3k views

Extracting human vocals from really damaged audio?

My friend received an audio clip from a family member he is concerned about, but the clip is very low quality. He asked me to help clean it up, but I only have a little experience with digital audio. ...
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3 answers
5k views

How can I remove mouse and key clicks from live audio? [duplicate]

I need to stream live audio from my desk while being able to use my computer at the same time. I have tried following the tips from How do I remove mouse click noise and How to Reduce Keyboard and ...
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3 votes
1 answer
748 views

remove static noise from audio recording

I have a recording with a static noise added throughout the audio. the longest silence period I could extract was this: audio_file however, it contains some moments of new sounds of flipping pages. ...
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0 votes
3 answers
89 views

Identifying non-human voice noise in EQ

Are there bands in EQ that can be safely quashed that are outside of human voice. Thinking that if noise is not human noise it must be room/background noise.
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1 vote
1 answer
90 views

Is it possible to remove weird noise which increases with volume?

I am totally newbie in topic of audio-video recording. Usually I got no problems with recording meetups using Go-Pro clone camera with built-in microphone but this time something weird happened with ...
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1 vote
1 answer
2k views

How to get background conversation in a sound record?

I have a audio file which belongs to a security camera that recorded inside of a cabin. There is a conversation taking place outside of the cabin and I need to get that conversation. Is there a way to ...
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1 vote
5 answers
5k views

When should a noise gate be applied?

I produce a weekly podcast and I'm slowly trying to improve my mixing and editing skills to make it sound as good as possible. The podcast is recorded with me and my co-host in the same room, which ...
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3 votes
2 answers
287 views

Audio Signal Difference Extraction

I'm from visual arts background and so, I'm not familiar with technical aspects of sound design. But I'm exploring and learning everyday. Currently, I'm working on a sound art project, for which I'd ...
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