Non linear echo suppression on VF3100

Voice related projects and technical discussions
Fabrizio
Member
Posts: 15
Joined: Fri Mar 02, 2018 6:05 pm

Non linear echo suppression on VF3100

Postby Fabrizio » Thu Apr 11, 2019 3:59 pm

Hi all,
I'm currently working with VF3100.
I have experienced problems (echo issues) in some conditions: for example in case of poor-quality loudspeakers or if you change the speakers volume.

Among the vfctrl parameters that can be configured, I found NLATTENONOFF (disabled by default) and NLAEC_MODE.
I have not found any documentation about these parameters.
How does NL training mode work?
Can anyone help me use them?

Thanks,
Fabrizio
tilde
Member++
Posts: 22
Joined: Fri Nov 07, 2014 9:03 am

Postby tilde » Thu Apr 18, 2019 2:07 pm

Hello,

I m working with DSP features, too. Documentation is not clear for me:

NLATTENONOFF - Non-Linear echo attenuation
NLAEC_MODE - Non-Linear AEC training mode

By experiments:
param GAMMA_E and GAMMA_ETAIL controls echo response time, bigger number means faster response
param AECSILENCELEVEL , lowest number means bigger effect

Docs available:
xCORE VocalFusion Control Users Guide: https://www.xmos.com/developer/download ... .0rc7).pdf

xCore VocalFusion Fine Tuning Guide: https://www.xmos.com/developer/download ... rc5%29.pdf

VocalFusion:recommendations and considerations for testingand optimisingfar-field voice applications: https://www.xmos.com/developer/download ... 1.0%29.pdf
With kind regards
Tilde

Who is online

Users browsing this forum: No registered users and 0 guests