Audacity Forum

... I have a new challenge. I understand how to remove the hum at the start of the sample... The first 1.3 seconds at the start , when the woman talking, is not severely affected by mains hum : only the first 10 harmonics of mains hum are conspicuous. So this occasion , where there are less than 20...

... there is a psychoacoustic effect where people listen to trashy recordings and "make up" their own sounds and words and swear they're real. A tell-tale sign that it's Rorschach audio , ( like the inkblots where people see meaning where there is none), is that only a word or two can be ...

http://www.youtube.com/watch?v=XClduWGEdq0 I feel like this is what I'm looking for. The guy mentions static in it and even shows where it is. Is what this guy saying legitimate? That YouTube is just a poor tutorial about how to use Audacity's noise reduction feature . As we've mentioned for passiv...

Hi Again this is a short recording of silence for few seconds to show the whistle. Attachments Whistle.wav Whistle demo (742.09 KiB) If you can't prevent this whistle it can be notched-out using Steve's Code below in Nyquist Prompt . Whistle, before-after Steve's de-whine code.flac (setq mysound s)...

... The last two stages are the stereo center alone and all that has been deleted (i.e. the side channels). sample2 excerpt , 4stages.mp3 That's a very clean centre-isolation : I can't hear any digital artifacts , is that rjh-stereo-tool.ny ? [ I use kn0ck0ut for that which usually adds some artifa...

cybrmarc wrote:typo:
http://www.teachingdrum.org/adjul/Sample1.mp3
http://www.teachingdrum.org/adjul/Sample2.mp3

On sample 2 You can notch out the mains hum for a start ...
then applying a wide notch at 5800Hz cuts back the bird noise ...

chewtah wrote:... how do I speed up a recording using Audacity?

Two options ...
Speed-up which will increase pitch ... http://manual.audacityteam.org/o/man/change_speed.html
Speed-up where pitch is maintained ... http://manual.audacityteam.org/o/man/change_tempo.html

Why am I able to remove slight ambient hum (equipment hum) through noise cancellation, but not natural sounds? Noises which only occupy a very narrow constant frequency range can be attenuated with a notch filter : like hum, some insects , some frogs and vuvuzelas . Wind, fire and flowing-water occ...

... So far I'm been looking for a program with a good live-action spectrum-meter so I can learn what freq. the different noises are at (e.g. insects versus birds versus plane overhead versus different human voices). WaveLab and Audacity both have decent meters it seems. I should add, I work at a sm...

...I was trying to find something in the Audacity help section that describes the “Snap to” function, and how to use it. It would same me a lot of time, if I did not have to scroll back and forth from beginning to end of the track section I’m working on. You can add labels to help you find your way...