Removing echo and enhancing audio

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kjubus
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Joined: Mon May 09, 2016 11:27 am
Operating System: Windows 7

Removing echo and enhancing audio

Post by kjubus » Mon May 09, 2016 11:37 am

Hey everyone

I'm recording some audio for my youtube channel. I've got a better mic recently (nothing fancy, but way better, than the headset I used before). I've noticed, that it's catching a lot of echo from all around. I'm using a DIY solution, by putting it in a box lined with cloth to reduce the sound and covering with a blanket in front. I can't seem to get hang of it, so I've figured out, that maybe I can improve it with some post processing? And maybe make it sound more "meatier", if you know what I mean? I've attached a sample with no effects on it (I usually use noise reduction and some bump-up of the volume). Do anyone of you have any guides, how can I improve it in the future?
Attachments
audacity test.wav
(512.04 KiB) Downloaded 719 times

kozikowski
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Re: Removing echo and enhancing audio

Post by kozikowski » Mon May 09, 2016 5:38 pm

Exactly correct. If you post a "clean" recording we have a fighting chance to help you. If you post a clip after post production, all we can tell you is, "you did it wrong." We can't take effects and filters out.

I can't listen to it right this second, but yes, this is the magic place that kills most people. Live recording is harder than everyone thinks.

What is the microphone? The more information, the better. Depending on the headset, you may have been better off with that. I have a broadcast headset that I used with my podcasting sound test. I also have a cheap USB headset whose microphone is terrible. I think it's intended to be a gaming headset, not podcast quality.

Which computer and OS, Which numbered Audacity?

If it's Windows, sometimes Windows will try to help you whether or not you want the help.

Koz

kozikowski
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Re: Removing echo and enhancing audio

Post by kozikowski » Mon May 09, 2016 6:08 pm

my youtube channel.
Which is where?

Koz

Trebor
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Re: Removing echo and enhancing audio

Post by Trebor » Mon May 09, 2016 7:35 pm

kjubus wrote:... I've noticed, that it's catching a lot of echo from all around ... maybe I can improve it with some post processing? ...
As it's a true stereo-recording , using Audacity's "isolate centre" will remove some of the room reverberation [echo] from the recording , ( the result will be mono ).
Attachments
''Hey Guys'' before-after processing in Audacity.wav
Isolate-centre, Noise-Reduction, EQ-ed , De-Essed, Compressed
(1.2 MiB) Downloaded 688 times
Last edited by Trebor on Mon May 09, 2016 8:28 pm, edited 2 times in total.

kozikowski
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Re: Removing echo and enhancing audio

Post by kozikowski » Mon May 09, 2016 7:48 pm

I can suppress the hiss noise (you probably got that far), but we can't do anything with the "recording in the kitchen" sound.

Modern interiors of polished wood bare floors, bare walls and ceiling pretty much guarantees a terrible voice recording. These rooms are aggressively hostile recording environments.

There are ways to get around this with fancy microphones, but nothing normal people are going to be able to afford.

So you are probably doing the right things with your sound-proof tunnel, only you may need to make it a lot more soundproof. "Cloth" is not the right word. You should use words like Heavy Blankets, Quilts (Duvets), and Fluffy Towels. I am a proud user of furniture moving blankets.

Image
Image

That's overkill. I built a soundbooth that I can transport to different locations and supports two people. It knocks down to the back of my pickup truck.

So fill in the blanks. What's the microphone and computer, and where are your existing podcasts? Describe the room.

Koz

cyrano
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Re: Removing echo and enhancing audio

Post by cyrano » Mon May 09, 2016 10:40 pm

Also, recording your voice in stereo adds to the problem. So I'm equally curious what mic you are using.

I've tried the box model, but it doesn't work for me. It always sounded boxy, unless it' a real BIG box. Koz's method is easier to start with, as it surpresses the parts of the room you don't want (reflections from walls, ceiling, floor and furniture) and you can move it if you need to.

Setting up a recording environment in a new location takes me two to four hours and that's not because of the gear, it's simply because I need to walk around with the mic I"ll be using, listening through headphones to the room. That's the way to find the sweet spot where the reflections cancel out as much as possible. Once you've found that spot, it's easy enough to add some absorption to calm down the "air".

If you'll be recording in the same room all the time, take a week or so do some test recordings in different spots. Store these and listen to them the next week, together with some podcasts you like as comparison.

You'll notice that mic placement is much more important that gear. Even a lowend simple mic can sound quite good and even an expensive Neumann or DPA will sound bad if you don't take care of placement.

That fat, heavy, American voice style can easily be created afterwards, with some gentle compression and some bass lifting EQ. A plugin like LoudMax will do that in a jiffy.

kozikowski
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Re: Removing echo and enhancing audio

Post by kozikowski » Mon May 09, 2016 11:17 pm

Oh, and one other thing. Turnaround on this forum can be minutes, not weeks. So, don't post a complex question and then go on holiday to Côte d'Azur.

Koz

kjubus
Posts: 12
Joined: Mon May 09, 2016 11:27 am
Operating System: Windows 7

Re: Removing echo and enhancing audio

Post by kjubus » Tue May 10, 2016 8:00 pm

Ok, so in order of asked questions:

This is the microphone that I use:
http://www.samsontech.com/samson/produc ... meteormic/

I run Windows 7 x64 and use audacity 2.1.2 (portable)

My youtube channel you can find here:
https://www.youtube.com/channel/UCReanM ... w6Fwh1Pohg

@Trebor wow, that is actually a lot better

I'm recording in a living room, that is quite crowded. Sofa, table, chairs, big wardrobe and few smaller furniture pieces.

Do you suggest, that I try recording in mono? Also, how should I place myself and the mic? is it better to face it to have as much distance to the wall, or maybe the oposite - the closer is better?

kozikowski
Posts: 71124
Joined: Thu Aug 02, 2007 5:57 pm
Operating System: macOS 10.13 High Sierra

Re: Removing echo and enhancing audio

Post by kozikowski » Tue May 10, 2016 8:25 pm

If you start recording in mono, Trebor's echo trick will stop working. It works by comparing Left with Right assuming most of the differences might be echo.

That's a good and bad thing. Normal directional microphones have a thing called Proximity Effect. you get bassier and more "American Announcer" as you get closer. On your microphone, that's going to mess up your stereo imaging and kill echo cancellation.

But yes, close is good. The limit is when you start distorting the quality and popping your P sounds.

http://kozco.com/tech/audacity/clips/PPopping.mp3

This may not sound like much on a whimpy sound system, but on a large system the P impacts are enough to scare the cat.

I need to make it home before I listen to the samples.

Koz

cyrano
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Re: Removing echo and enhancing audio

Post by cyrano » Tue May 10, 2016 9:04 pm

The Samson Meteor is a mono mic. Where is your stereo effect coming from? :shock:

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