Audio problem in VoIP App

Question

MKhan OP

Created Oct ’15

Replies 2

Boosts 0

Participants 2

Hi,

Our VoIP App was fully tested and working fine on iOS 8 for Incoming and outgoing calls.

When iOS 9.0.1 was installed on iphone 4 and 6, Audio sound quality of outgoing call part was NOT understandable.

After we upgraded our VoIP app, using XCode 7.0 we recompiled our code with no error or warnings yet the audio quality problem in outgoing call still exists.

Without any error or warnings, can you inform us of what changes in “Audio” that might affect this ?

Our App is using following iOS Audio Frameworks

1- AV Foundation framework

2- Audio ToolKit framework

3- Core Audio framework

Additionally, we use GSM Codec for our VoIP calls.

Any ideas on how can we progress to a satisfactory solution?

Thanks and Regards

Majid Hameed Khan

Boost

Answer 1

MKhan OP

Oct ’15

SOLVED - Update on this problem - we made an assumption that iOS9 was working much faster than iOS8 and started to experiment with altering number of iterations of encoding and sending data. Whilst everything worked fine in iOS8, we found by increasing the number of iterations in a given time by 10x - this seemed to have solved the problem.

MKhan

0

Answer 2

ashishm OP

Oct ’15

Hello Majid Khan,

Apparently we are running into the same issue as you listed without any solution. Could you pls give a high level on how you increased the iterations to 10x times ? Is it something that every application has to do when using their own vocoder?

Thanks in advance,

Ashish Malik

0