Author Topic: Changing Bitrate (Read 2989 times)

SamSeeSam · « **on:** July 06, 2006, 05:51:34 am »

I wanted to know if there is a way to change the bitrate of audio files.
I have some very old files(Speeches) which are 32 bits. Will changing their bitrate help in increasing their clarity?
Could you please suggest some tools that will help me in doing so...
Thank you
Cheers

Bearded Blunder · « **Reply #1 on:** July 06, 2006, 06:56:53 am »

You can't increase the quality by re encoding, you may in fact lose some, sometimes re encoding HIGH bitrate tracks is useful, as you can save disk space without significant degradation in quality, but a low bitrate file only has the audio information in it that it does, doubling the rate would only achieve a file twice the size.

SamSeeSam · « **Reply #2 on:** July 07, 2006, 08:42:14 pm »

Is there anyway I can refine the tracks... Some have some nasty beeps and other funny sounds.....

Bearded Blunder · « **Reply #3 on:** July 07, 2006, 11:43:20 pm »

You can play with them in an audio editing tool.. nero wave editor or something, many have tools to remove noise, or alter volume, it's possible you'll increase understandability, but it's doubtful you'll work many miracles on a low bitrate file.

SamSeeSam · « **Reply #4 on:** July 08, 2006, 05:41:12 am »

Best way to decribe the noise are those funny sounds you here when you tune the radio and are between two stations.....

WOMBAT · « **Reply #5 on:** July 08, 2006, 06:37:57 am »

Harlo SamSeeSam

No Matter What The Bitrate If You Have Background Noise In The Audio File
You Are Going To Have Some Difficulty Removing It. There Are Some Commercial
Programs Around, A Couple Of Which I Have Tried, Which Promise The World At The
Click Of A Button, But none Of Which I Have Found To Be Remotely Succesful. There
Are Lots Of Free Wave Editors, I persnally Use Creative Wave Editor, Which Is Not Free,
But i Find To Be The Best.

Unfortunately When You Remove Noise Which Is At A Certain frequency You Also Remove
Other Sounds In The File Of The Same Frequency And So By Trying To Improve The
Quality Of You Sound File You Actually Are Making it Worse.

Probably The Easiest Way To Achieve Better Results Is To Play The Sound File Through
An Equalizer And Adjust The Suspect EQ frequency Band Down A Little To Reduce The
Background Noise And Then RE-Record The File Through The EQ..

The Wave Editor Will Help To Remove Any Snap, Crackle And Pops But Use Sparingly As
You Can Also Remove other Sounds If Your not Careful. The Good Thing About This
Editing Is It Is NON DESTRUCTIVE EDITING Which means You Can Edit And Play Back The
Result To Listen To But Unless You Actually Save The Resultant File It Will Not Make Any
Changes To Your Original File.

Hope This Helps You A little Bit