Compiler/AM3352: Acoustic echo removal issue

user6253440

Part Number: AM3352

Tool/software: TI C/C++ Compiler

Our product is a VoIP gateway based on AM3352, and we handle the "acoustic echo" problem by using "TI AER Bundle". It works fine, but only ONE AER instance works at a time, which is not sufficient for the product.

When we tried to generate 2 or more instances, program exits with an error "Error when calling aerNew() for HES with error code 2!" According to the manual, it means "aer_ERR_NOMEMORY (supplied memory are not enough)".

So, is there anything wrong in our code? Or AM3352 isn't able to support 2 or more AER instances?

Thanks.

over 5 years ago

0 Biser Gatchev-XID over 5 years ago

TI__Guru**** 393215 points

Hi,

Your query has been assigned to a TI engineer. Please note that response may be delayed due to Christmas and New Year holidays.

0 Ming Wei over 5 years ago

TI__Guru 54905 points

Hi,

The new AER instance will require more memory space. Can you try to increase the heap size in the CFG file?

Ming

0 user6253440 over 5 years ago in reply to Ming Wei

Prodigy 20 points

Hi Ming,

Thanks for the reply.

We changed the memory configuration, and now the program runs well. But only instance 0 works. Acoustic echo remains in other instances.

Have any users applied multiple AER instances ever? Or can this work theoretically?

0 Ming Wei over 5 years ago in reply to user6253440

TI__Guru 54905 points

Hi Xiaowu,

I know for sure the multiple instance AER works on C64/C66. Since the code base is the same for ARM core, I think it should work for AM335x too. Make sure the new instances have the same option values as the first one and also check for any error returns.

Ming

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Compiler/AM3352: Acoustic echo removal issue