Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Hybrid Echo cancellation

Status
Not open for further replies.

Girly_girl

Full Member level 2
Full Member level 2
Joined
Oct 14, 2009
Messages
143
Helped
9
Reputation
18
Reaction score
8
Trophy points
1,298
Location
UK
Activity points
2,125
Hey guys

Just a quicky question..

What algorithms are the best to implement a hybrid echo.. for acoustic echo its adaptive filter algorithms, but anyone knows anything about the cancellation of hybrid echo?

Thanks
 

Guys any thoughts or suggestions?

Help!
 

Hi Girly_girl,

The same adaptive algorithms, for example Normailzed LMS (NLMS).
For hybrid echo (I assume you are speaking about near line echo) the impulse response is shorter than acoustic echo, then the filter length can be shorter and convergence is easier.
In the case of far line echo, the delay can be quite long and requires long lines and filter order.
Regards

Z
 

Hello Zorro..
Thanks so much for ur reply..

So is NLMS the mostly used algorithm for Hybrid echo?
I am curently implementing RLS and NLMS for acustic echo...

DO any of them come in use?

Thanks
 

Hi Girly_girl

I don't know if NLMS is the most used algorithm. But it is a good compromise between complexity and performance and, as long as I know, it allows to achieve ITU-T reccomendations.
Regards

Z
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top