Questions tagged [filtering]

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2answers
261 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
2answers
83 views

Subtract music from microphone input while recording

I do have a Soundblaster 5/rx with a line-in, my mixer has an aux-return (and if that does not what I think it does, it has a headphone out too which I could use). The signal that is sent to the ...
3
votes
2answers
186 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 ...
0
votes
1answer
45 views

Is there any way to remove foley from dialogue?

I have a single wav file that has both dialogue and computer keys clicking at the same time, is there any way to do an FFT or noise filtering to just isolate the dialogue? Thanks
0
votes
3answers
500 views

Filter Audio Output from Audio Input

First time asking a question on SE; Google and old SE questions have always gotten me by before. :) I think this is the right place to ask. Background: I'm working with linux (ultimately an RPi, ...
0
votes
1answer
65 views

Is it possible to set channel 3-6 as subwoofers on a DBX260 driverack?

We have an installation with two different set/pairs of subwoofers, all powered by different amplifiers. Therefore I want to be able to adjust everything independently. It seems like the only ...
0
votes
1answer
130 views

Reference: What are the common algorithms for crossovers?

I don't want a debate, but I'm having a great deal of difficulty finding algorithms for crossovers, let alone how they might affect the band passing nature of the filters. Update from the helpful ...
4
votes
1answer
126 views

Simulating effect of various metal speaker grills

I'm looking to create software which will simulate the overall effect of different styles, sizes and openness of speaker grills on the audio received by the listener. So far I have the following ...
3
votes
3answers
364 views

Why signal is overloaded when I use a low cut filter?

I have a stereo mix file at about 0 dbfs. When I put a high pass filter and cut below 30Hz it boost the signal +3db up. Is this normal? I tested it with different filters (plug ins only) and I had the ...
1
vote
7answers
6k views

Should one use pop filters for recording vocals?

is it advisable to use pop filters to avoid blows for recording vocals? or should we place the mic a bit off from the mouth though it might lead to loss of high frequencies since they are directional? ...
1
vote
4answers
324 views

Noise Frequency

Im just wondering, as there are lots of kinds noise that creep into our recordings. what are the typical frequencies where noise is mostly present as so I can apply filters etc.. And also, what type ...
1
vote
4answers
305 views

Envelope-following bandpass filter?

Anyone use one as a plug-in that they like the sound of? I'm specifically working on something where this would save exactly one metric butt-ton of automation...