Questions tagged [filter]

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27
votes
3answers
44k views

What does 'Poles' mean in relation to a filter?

Sometimes filters are referred to in terms of dB/Octave (a 24dB/O is a common low pass filter setup, for example), however sometimes they are referred to in terms of 'Poles' (I've seen switchable 2/...
12
votes
4answers
355 views

Vuvuzela silencing techniques

Last year's soccer World Cup in South Africa brought about many vuvuzela silencing tools. What are the characteristics of vuvuzela noise that allow it to be silenced? What are some of the common ...
6
votes
1answer
456 views

Audio tweaks pre-encoding for high quality MP3 output

I run an internet radio station. We encode our audio into MP3 at 128kbit, joint-stereo 44.1kHz, with LAME. Obviously there are limits to the quality that can be achieved with this bandwidth... that'...
6
votes
1answer
326 views

How to keep audio-fequency noise from my refrigerator out of my audio gear?

I recently replaced my refrigerator with a brand new LG model LTCS20220W. The fridge is silent, but when it is running, my guitar amplifier is picking up a 4,500Hz signal which is driving me crazy. I ...
5
votes
1answer
49 views

Sending different ranges of frequencies to separate channels?

How would I send specific ranges of frequencies to different channels like the example I made in photoshop below? Right now I'm using FL Studio 9.7
5
votes
1answer
958 views

extract specific frequencies from audio

As you can see from the spectrograph, there are two melodic lines in this excerpt. These two voices are played by different instruments. Is there a tool (preferably free) that will allow me to extract ...
4
votes
3answers
15k views

What is the difference between low-pass and high-cut filters?

Is there any difference between low-pass and high-cut filters? There must be, and that's why they're named differently. But, when and why would you use one instead of the other?
4
votes
4answers
5k views

Filter Reverb and Echo at the time of recording in Audacity or any other software

I am recording video lectures. The sound in those lectures must be clear from outside noises and also any echo/reverb. At my home I have only one room where the traffic sound and other sounds (barking ...
4
votes
5answers
286 views

How to amplify mans voice in a noisy recording?

There is a party and as usual people are grouped. We have 2 groups - in first there is a woman who is telling a story at the moment. In second, there is a man, telling interesting anecdote. We have 7 ...
4
votes
1answer
80 views

Is there something wrong with my ears? (perception of frequency and their dynamics)

When using EQ, I have more difficulty hearing what's being suppressed compared to what's being boosted. For example if I put white noise on a channel and sweep the parametric EQ up and down the ...
4
votes
1answer
129 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
407 views

Low Pass Filter?

I've constantly heard about the Low-Pass (or High-Pass) filter, but I am confused. I read that it works on cancelling out certain frequencies that are below (or above) a certain threshold. However, I ...
3
votes
1answer
149 views

Filter to make music sound like it's being played in a mall?

I'm trying to conceptualize how I want the music for my game to sound, and as I have no musical experience, there are some ideas I have trouble describing, but the musical aesthetic I want for my game ...
3
votes
2answers
10k views

Kylo Ren Voice Changer

I'm curious to know what kind of voice changing affects were used on Kylo Ren in Star Wars VII. It sounds like a pretty basic gravelly distortion filter that lowers his voice, but it still sounds ...
3
votes
2answers
135 views

Basic pitch processing

I am using matlab to construct a simple synthesizer, starting from fundamental sin waves. When playing two successive pitches their is a "tick" noise appearing at the junction which I would like to ...
3
votes
2answers
2k views

Removing pop sounds and heavy breathing from male voice

We have a male actor who tends to breathe heavily and enunciates his p's quite distinctively. What could we do to reduce or completely remove the pop-like sounds during a live performance? Any eq ...
3
votes
3answers
7k views

What is the purpose of an FFT filter?

I've used the built in FFT filter in Adobe Audition to get some vocals sounding like they're coming from a police radio, and while the black box worked, I'm just curious as to what the FFT filter is ...
3
votes
2answers
6k views

LAME: Why is a lowpass filter used with --preset insane

After analysing various converted mp3's I've found out that the LAME encoder uses a lowpass filter for the insane preset (CBR 320), but the filter seems to be disabled for the extreme preset (VBR V0). ...
3
votes
1answer
173 views

How can I create this transition effect

I don't know what this popular transition effect that DJ's use is called, but I'd like to know how can I recreate it with common DJ programs (like Traktor) The effect I mean is the kind of noise in ...
3
votes
2answers
170 views

How can I use one sound to filter another sound?

Imagine I have two sounds: Sound A is a very saturated, dynamically high and flat sound. Like a distorted guitar. Sound B is very dynamically complex, such as a vocal line. Is there any way for me ...
3
votes
2answers
89 views

Filter or Eq out certain parts of the spectrum without introducing transient distortion

As we all know windowing function or any kind of EQ'ing could destroy transients, introduce ringing artifacts etc...I wounder is there any other way achieving tasks such as filtering certain partials ...
3
votes
1answer
145 views

Critical listening examples for compressors and digital filters?

I'm looking for listening examples for the following applications: -Compressors usage (what to listen for when changing parameters such as ratio, attack, release time, etc). I've found some material ...
2
votes
13answers
770 views

What's the wackiest software filter out there?

For pure filtering mayhem, what are people grooving on these days? Is there anything approaching, or surpassing, devices like the Sherman Filterbank for extreme filter-based processing? There are a ...
2
votes
3answers
5k views

Software to identify words or voices in a recording?

I have several legally obtained recordings ... too many. They're not labeled and I would like to see if I can "scan" these recordings for a particular voice so I know if that person is on that ...
2
votes
1answer
80 views

What microphone is used in these videos?

What microphone (and mount) does this girl use in her videos? Examples: Also: Would using a pop ...
2
votes
1answer
733 views

What type of filter is the “French Low Pass Filter”?

What kind of filter is a French Lowpass Filter? In one example I know of, the Serum soft synth, there is a lowpass filter called the "French LP" under the "Misc" set of filters. I suspect it may ...
2
votes
2answers
118 views

MKH8000 / MZF8000

I've put together a new M/S rig of a MKH8040 + MKH30 - still waiting for some of the pieces to arrive. I often hear about the strong low end pickup on the 8040 and know that's there's the MZF8000 ...
2
votes
1answer
984 views

LAME bitrate and lowpass filters

Is there a formula or chart that specifies what lowpass filter LAME will automatically invoke for certain bitrates? I've looked around the net and can't find anything on this. And is there a specific ...
2
votes
2answers
158 views

specifics of clipping distortion perception

Why clipped sound perceived like someone is pouring sand on drum's membrane? It feels like it happens on specific frequencies and not totally random. Which maybe means it can be filtered? Can we ...
1
vote
4answers
447 views

How can I improve this chain of filters to make a better voice with Audacity

I'm a true beginner in sound design, and use of softwares to edit sounds. However I started to make a chain of filters in Audacity (File > Edit Chains). I'm recording podcasts with only my voice as a ...
1
vote
2answers
9k views

how to remove sound clipping in existing record

I have an old record that has some clipping effect that happened during recording. This is a song, so i can't just cut out all frequencies probably ... is there any smarter way around to get rid of ...
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...
1
vote
1answer
121 views

Filter slope and roll off freq add up?

Here's a little something that puzzles me; do I add up the roll off point (-3db) to the attenuation per octave (eg. 18dB/va) or not? Am I correct that the roll off point is not to be considered ...
1
vote
1answer
2k views

How to filter guitar sound to create a backing track

I was wondering if there's kind of a "rule" to filter guitar sound from a track. My idea is to create my own backing tracks, e.g. I did not find any backing track of "Roxette - Listen To Your Heart", ...
1
vote
3answers
1k views

Microphone/Extras for video-tutorials/screencasts

For making video-tutorials/screencasts, what is a good, yet affordable microphone and what additional extras do I need? The tutorials will revolve around programming, so things to consider might be ...
1
vote
2answers
75 views

Filter certain instrument/sound from track

I'd like to eliminate a certain sound from a track, namely the one produced by cymbale. Take a look at it: https://vocaroo.com/i/s1FpZrxM07TK It has a very unique signature compared to the ...
1
vote
1answer
2k views

Stand and Pop Filter for Samson Go Mic [closed]

Which Mic stand and Pop Filter is best for Samson Go Mic?
1
vote
3answers
3k views

Why do the orders of hi/low pass filters go in 6 dB increments?

A low pass filter - the first order is -6 dB per octave and as the order increases, so the cut is increased by 6 dB i.e. -12 dB, -18 dB, -24 dB, etc. Why is it 6 dB? Why can't it be 4 dB for ...
1
vote
0answers
13 views

How to use a jack route as a single audio-filter with ffmpeg

I have configured Ardour and there, An audio track takes input from a Jack-Sink device Applies some effects by using some Aux-Send Outputs the final audio to Master which is a Jack-Client Now, I ...
1
vote
2answers
837 views

Bandpass filter on omnidirectional microphone (experimenting)

Simple thought, this is more for experimenting than anything else. I am well aware the end result may sound horrible, so please don't presume to preach to me here. I play music. I have a battery ...
1
vote
1answer
752 views

Is homemade noise cancelling possible using existing hardware and included software/filters?

I'd like to create a higher tech noise cancellation machine (possibly with added white noise) for a room to reduce the sound of snoring from the next room over. I was thinking that by placing a mic, ...
1
vote
2answers
85 views

Need software-based, resonant filter for 90's ROMpler

Any suggestions on how to add a resonant filter to a keyboard that does not have one? I have a Alesis Quadrasynth (QS4) and want to do midi-triggered filter sweeps in real-time. Thank you! Dan
0
votes
2answers
91 views

“Chiptunify” a wave file - possible?

I got several music in flac format (which I can convert around) but the thing is this: is there some sort of filter that can "alter" the sounds in some ways to make it sound like chip tunes? For ...
0
votes
4answers
597 views

What is the relation between high pass (low cut) filters and headroom?

I use, just like most of you I guess, high pass filters in my mixdowns to clean up muddyness and save headroom. I have a subscription on Computer Music in which every month a producer named Owen The ...
0
votes
1answer
215 views

Can a software generate a “midi” track from a song of musical notes of different instruments thanks to some filters? [closed]

Everybody knows those goofy special graphical effects generated by media player when you listen to a song. I never really liked them because they seem random and don't seem to synchronize with the ...
0
votes
2answers
152 views

Audio Filter for accent modifications

Anyone know of a audio filter or tool that can manipulate accents in an audio. Or may be some tool that achieve closer result. Requirement Doing some research on voice recognition systems. Want to ...
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 ...
0
votes
2answers
36 views

Irritating high pitched noise filter?

Are there methods to reduce noises that are generally accepted to be irritating while preserving other high frequencies? Maybe some pitches are acceptable, but only for a limited amount of time, so a ...
0
votes
1answer
85 views

Zoom Q2HD for podcast-quality recordings?

I happen to already own a Zoom Q2HD. I have used it to record meetings and music auditions and have been happy with the results. Now I wonder if I could use it to record an individual voice. I am ...
0
votes
1answer
436 views

Making Voice filter based on video game character using Audacity

I'm trying to edit my voice clips to sound like this chap here I asked a Senior Sound Designer and he pointed me towards comb filtering. Got the plug-in but am not ...