Questions tagged [filter]
The filter tag has no usage guidance.
64
questions
33
votes
3
answers
62k
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/...
Ed J
12
votes
4
answers
479
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 ...
Jaime Soto
7
votes
3
answers
26k
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?
- 201
7
votes
1
answer
559
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'...
- 2,578
6
votes
1
answer
1k
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 ...
- 61
5
votes
1
answer
87
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
RyanScottLewis
5
votes
1
answer
1k
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 ...
firebat
4
votes
4
answers
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 ...
- 141
4
votes
3
answers
593
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 ...
user488792
4
votes
5
answers
371
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 ...
genesiss
4
votes
1
answer
1k
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 ...
- 141
4
votes
1
answer
102
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 ...
- 388
4
votes
2
answers
10k
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). ...
- 166
4
votes
1
answer
220
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 ...
- 143
3
votes
2
answers
15k
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 ...
- 143
3
votes
2
answers
148
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 ...
- 31
3
votes
2
answers
3k
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 ...
- 31
3
votes
3
answers
14k
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 ...
- 31
3
votes
1
answer
125
views
How is this synth sound made? (WarGames, 1983)
I'm studying the soundtrack to WarGames (1983) - this track in particular, History Lesson:
There's a repeating phrase throughout, here's a short clip: https://www....
- 31
3
votes
1
answer
177
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 ...
ifischer
3
votes
2
answers
348
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
2
answers
112
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 ...
- 73
3
votes
1
answer
153
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 ...
- 223
2
votes
13
answers
825
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 ...
- 11.1k
2
votes
3
answers
9k
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 ...
- 21
2
votes
1
answer
112
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 ...
Ben
2
votes
1
answer
159
views
can you combine a high passed signal and low passed signal to get original signal
suppose you take a signal, and duplicate it, then apply a low pass and high pass filter both with the same frequency and roll-off respectively to each signal, then combine the two signals additively, ...
- 123
2
votes
1
answer
1k
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 ...
- 151
2
votes
2
answers
136
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 ...
- 6,688
2
votes
1
answer
1k
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 ...
- 123
2
votes
2
answers
173
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 ...
- 161
1
vote
4
answers
957
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 ...
- 111
1
vote
2
answers
12k
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 ...
- 161
1
vote
4
answers
318
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...
- 11.1k
1
vote
1
answer
377
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 ...
- 11
1
vote
1
answer
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", ...
- 247
1
vote
3
answers
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 ...
Ben
1
vote
1
answer
82
views
Dayton Audio mic calibration file details
Dayton Audio provides calibration measurements for some of their mics in the form of a text file mapping frequencies to gains for that particular mic (by serial number), e.g. one of mine is:
*1000Hz -...
- 201
1
vote
1
answer
32
views
Why is Fourier space not adecuate for (theoretical) filters? [closed]
As far as I have seen, almost all theoretical filter design occurs in Laplace or Z-space.
Also, there is a pervasive connection to real life analog filters in the design. If one
is just thinking in a ...
- 111
1
vote
2
answers
106
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 ...
- 111
1
vote
1
answer
3k
views
Stand and Pop Filter for Samson Go Mic [closed]
Which Mic stand and Pop Filter is best for Samson Go Mic?
- 123
1
vote
3
answers
6k
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 ...
- 11
1
vote
0
answers
34
views
How Does A Filter Work?
I was reading secret synths, and understood how the phase shift between two identical signals can result in filtering. But the way it'd written makes it seem like the filters attentuating is different ...
- 11
1
vote
0
answers
243
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 ...
- 111
1
vote
2
answers
2k
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 ...
- 53
1
vote
1
answer
1k
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, ...
- 113
1
vote
2
answers
119
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
2
answers
271
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 ...
Karl
0
votes
4
answers
1k
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 ...
- 266
0
votes
1
answer
489
views
how to separate an audio file based on different speakers
I have a conversation recorded of 2 different people, the conversation contains a gap before every sentence or person to make it easier for the algorithm recorgnise the voice. I want to try to split ...
