How to reduce echo room sound in imovie '11. Help

Hi

NO - is the easy answer.

The research on Audio and Field-Vector-Analysis - are far from commercially availably to any layman or amateurist as to yet.

May be when Quantum-Computers get affordably one might be able to do this.

What then can be done.

• Put audio into an Audio Editing program as GarageBand or Audacity (free from Internet) and use the Equalizer and filters and try out if any of them makes the audio any better. I've never got anything improved by this way. But many suggests it.

• There is a "Hocus-Pocus" advice often mentioned - and there is a small effect - and it's called:

- The Wet Towel - method

To do this You need

- A VERY SILENT place !

- Speakers and equipment to play the Audio

- A Wet Towel and something to hang it onto

- A GOOD Microphone and recording equipment

Now Play the audio - Keep towel in between (half meter to meter from speakers) Speakers and Microphone.

Many can confirm that the audio from this try - has been improved to original.

Physics behind this - goes way above my head. Still if it works - it works.

• In pro situations one use to do one or more of theses

- Re-take it all but now with better Microphone technice

- DUBBING - let someone read in text but now in a controlled environment - very tough and time consuming.

- TEXTING - The way I do it - also takes much time. But it's the only way I've saved the day.

Yours Bengt W

Bengt Wärleby wrote:

… There is a "Hocus-Pocus" advice often mentioned - and there is a small effect - and it's called: The Wet Towel - method…

Wow - I never ever heard of that, Bengt!! Surprise …

In my humble understanding of physics, it is indeed hocus-pocus - but some Voodoo does work, who knows! 😁

As far as I know, there's no 'cheap' solution to de-echo-zise audio.

Only, what you recommended too:

• sub-titles

• or, if the audio is spoken-text only, try to find with an equalizer the speaker's frequency, human voice should be around 3-4kHz, raise that, lower every other.-

… wet-towel-method… crrrrazy… but great! … 😝

No. Now there is pricing -> 349 for the 'cheap' version and 1299 for the 'advanced' version....oy! Haven't these folks realized that that kind of cash isn't exactly floating around out there for normal folks and if they want access to the consumer market there's another way -> Micro Payments ? Here's a thought put the entire feature set online, have the end user pay for a process of say 1.99...you'll get a lot more bees like that! Anyway...there is a pricing structure, now! If anyone else has a bright idea how to deverb an audio file, I am all ears!

Hi,

Bengt is correct in saying that you cant easily remove reverberation.

RX3 (advanced) can do that as well as a piece of software called UnVeil. Alos very expensive.

These are professional tools, hense the price, and are not aimed at consumer level customers.

Sorry not to be able to offer a magic bullet, however that is the reality.

Not sure about the wet blanket..it probably just removes some of the HF.

The sollutions offered here are the bset way round. Another is to duck the audio and do a voice over, which is a lot easier than dialog replacment.

Chris

VO is NOT a solution in this case where the audio is about 24 minutes long, and I'd have transcribe everything, and then do a voice over of my own voice....trust me, the reverb on this is like cathedral audio. If I could knock it down to half of what it is....I'd be happy. I may try the wet blanket trick...

addendum ....

there's a tool announced

http://www.izotope.com/products/audio/rx3/index.asp

which claims to de-reverb audio!

No prices published yet ... but, audio meanwhile is magic ... 🙂

Interesting ! Thanx.

Yours Bengt W

If they made this with Field Vector Analyzis - then the price is "reasonable" but I guess that it needs computing resourses too. And they might easily be much more terrifying.

Yours Bengt W