I am using google VR audio engine to play an ambisonic audio in my iOS app
audioEngine = [[GVRAudioEngine alloc] initWithRenderingMode:kRenderingModeBinauralHighQuality];
ambisonicid = [audioEngine createSoundfield:url];
I asked in the github repo and it is not possible yet.
The link for the issue: How to get/set audio current time with GVRAudioEngine?