echo cancellation

echo cancellation

Hi,
I've been hunting around for an echo cancellation plug in; vst or
directX; to use with sound forge - it's probably right under my nose... can
somebody throw me a few pointers ?

cheers,

Bruce.

Re: echo cancellation

anern <aner@aner.anern> wrote:
> I've been hunting around for an echo cancellation plug in; vst or
>directX; to use with sound forge - it's probably right under my nose... can
>somebody throw me a few pointers ?

For what? For a telephone line? Most telco echo cancellers are really
just floating gates.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Re: echo cancellation

> > I've been hunting around for an echo cancellation plug in; vst or
> >directX; to use with sound forge - it's probably right under my nose...
can
> >somebody throw me a few pointers ?
>
> For what? For a telephone line? Most telco echo cancellers are really
> just floating gates.

acoustic echo cancellation.

Re: echo cancellation

On Sat, 03 May 2008 13:34:58 GMT, "anern" <aner@aner.anern> wrote:

>> > I've been hunting around for an echo cancellation plug in; vst or
>> >directX; to use with sound forge - it's probably right under my nose...
>can
>> >somebody throw me a few pointers ?
>>
>> For what? For a telephone line? Most telco echo cancellers are really
>> just floating gates.
>
>acoustic echo cancellation.

Oh, the ACOUSTIC kind of echo :-)

Do you really mean echo? Or reverb?

There are tools that will make an over-reverbrant voice recording more
intelligible. Useful in forensic applications. I know of nothing
that will strip a bad room sound or misapplied reverb effect from a
musical recording and leave it sounding good. But I'd hate to say it
COULDN'T be done. We seem to be creeping towards the "impossibility"
of separating instruments from a complex mix. Maybe reverb can also
be isolated and removed by sufficiently powerful number-crunching.

(Yes, I know Melodyne's layest offering is only a first step.)

Re: echo cancellation

> >> >    I've been hunting around for an echo cancellation plug in; vst=
or
> >> >directX; to use with sound forge - it's probably right under my nose..=
.
> >can
> >> >somebody throw me a few pointers ?
>

the folks at comp.dsp might be able to help you

Mark

Re: echo cancellation

anern <aner@aner.anern> wrote:
>> > I've been hunting around for an echo cancellation plug in; vst or
>> >directX; to use with sound forge - it's probably right under my nose...
>can
>> >somebody throw me a few pointers ?
>>
>> For what? For a telephone line? Most telco echo cancellers are really
>> just floating gates.
>
>acoustic echo cancellation.

What kind? If you're trying to fix slap echo in a recording, you
cannot.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Re: echo cancellation

anern wrote:
> Hi,
> I've been hunting around for an echo cancellation plug in; vst or
> directX; to use with sound forge - it's probably right under my nose... can
> somebody throw me a few pointers ?
>
> cheers,
>
> Bruce.
>
>

Echo cancellation is generally a telephony thing. If you can have a
copy of the before and after signals in PCM, you can deconvolve
them, invert the deconovolution signal, them mix a convolution of
that back in with the echoed signal.

Not very simple, I am afraid.

--
Les Cargill