Questions tagged [noise]

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20 questions with no upvoted or accepted answers
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3
votes
2answers
199 views

Recording audio from PC sound card

I am trying to use the sound card in PC 1 as a synthesizer from PC 2, which sends MIDI commands to PC 1 through Ethernet, which is not a problem. The problem appears when I connect line out to the ...
3
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2answers
172 views

How to improve SNR of low signals

I'm recording breathing sounds (inside anechoic chamber) with a MEMS microphone in a custom housing. The sound level is low; and near the noise floor of the mic, so we have a lot of input gain and ...
2
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1answer
84 views

Trying to create a DAB radio garbled audio effect

(Previously posted in Amateur Radio: https://ham.stackexchange.com/questions/7335/how-does-dab-radio-garbled-noise-come-about ) I've been fascinated by my digital/DAB radio lately, whose placement in ...
2
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0answers
2k views

Help me understand Class-D amplifier intrinsic noise

Introduction I've recently entered the prosumer/pro audio market by buying JBL LSR305 studio monitors and noticed that the tweeters produce constant high-pitched noise (most people apparently call it ...
1
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0answers
70 views

Can anyone identify the source of these recording artifacts?

I have a setup with a pair of high-frequency (200k) ultrasonic microphones which I am trying to run from a Raspberry Pi Zero. The microphones are attached to a USB hub, and both the hub and the Pi ...
1
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0answers
65 views

Subtle high-pitched tone from Samson C02

I'm wanting to use a Samson C02 going into a Zoom R24 to dabble a bit in recording music, gameplay commentary, and other miscellaneous things. However, whenever I use the mic, there's a rather quiet ...
1
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0answers
17k views

Condenser Mic - Constant white noise (hiss), can't get rid of it

I've been reading through the posts and learning a lot. Thank you all for sharing and helping! I'm new to recording and I just set up my recording system to do voice overs and audio books. Here is ...
1
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0answers
32 views

static in my video sound

I am getting static sound on my video playback. I have my computer and camcorder going into a manual switcher and out of the switcher to a monitor on the wall. The static occurs when I have my HDMI ...
1
vote
1answer
290 views

USB microphone introduces buzzing after a few minutes of listening

Preamble I recently bought a new AT2020 USB condenser microphone. Tossed up going with the XLR and getting a dedicated interface, but I'm not a sound engineer - I'm a computer programmer - and this ...
1
vote
2answers
113 views

Is there a minimum repeating length of noise that we stop perceiving as repetitive?

When I hear white/pink noise looped I can tell that it's being looped, and pick out parts of it even if it's repeating every few seconds. I was wondering if there's a length of noise that we won't ...
0
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1answer
18 views

i have a 48 volt Innogear phantom power that is causing a thumping noise to be in my recording

so I have had an innogear preamp for about a year now and it is in great condition but it's causing my recordings to have a thumping noise in it I don't know what to do should I toss it and buy a new ...
0
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0answers
22 views

“seawave” noise on the right channel of a line array sound system

I work in that community center for almost a year now. Without any warning and only when there is no input source on, you can hear a "seawave" kind of noise on the right channel of a line array sound ...
0
votes
1answer
140 views

Behringer C1-U Microphone Static Noise In Background

So I got my Behringer C1-U Microphone for my birthday on the 19th of November, and the Microphone has been amazing since just recently, all of sudden there has been a super annoying static sound in ...
0
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0answers
46 views

Solving strange effects in audio waveforms

I have generated two similar audio waves, but one of them is presenting some strange effects when played. I have attached both files: Original Audio FilteredAudio They are both PCM 16 bits little ...
0
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0answers
262 views

ZoomH4n - Some kind of an answer…

After recording again and being puzzled again by the levels on my Zoom H4n, I googled a bit and found this awesome handheld recorder shootout: "Noise floor of the on-board mics and mic-inputs - Zoom ...
0
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1answer
53 views

How to add Decibels?

I have just started studying Audio Engineering and I have come across a section where I need to add decibel levels together. I am aware that adding two decibel levels together will always give you ...
-1
votes
2answers
49 views

Why do so many tracks have an insanely high noise floor / white noise?

A lot of tracks have very loud white noise, and it's often very easy to hear at the beginning of tracks before it actually starts. The noise usually gets stupidly noticeable and annoying if listened ...
-1
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3answers
2k views

Can you help identify this sound effect?

Can any of you help me identify this sound effect? https://instaud.io/1GDq You help is strongly appreciated. Cheers!
-1
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2answers
98 views

Bandpass filter using SoX

To limit the audio file input.wav containing noise mixed with a pure 1000 Hz frequency sinusoidal tone to 995-1005 Hz, using SoX : sox input.wav output.wav sinc 995-1005 However, the volume changes ...
-3
votes
1answer
71 views

Help with amplifying voice on a call recording

I recorded a market research interview using ACR recorder on my andriod. I can hardly hear the person on other side when I play the recording. Tried amplifying through Audacity, using compressor ...