A central part of the library is the CBFormat object which acts as a buffer for B-Format. There are several other objects, each with a specific tasks, such as encoding, decoding, and processing for Ambisonics. All of these objects handle CBFormat objects at some point.
//Generation of mono test signal
float sinewave[512];
for(int ni = 0; ni < 512; ni++)
sinewave[ni] = (float)sin((ni / 128.f) * (M_PI * 2));
//CBFormat as 1st order 3D, and 512 samples
CBFormat myBFormat;
//Ambisonic encoder, also 3rd order 3D
CAmbisonicEncoder myEncoder;
//Set test signal's position in the soundfield
PolarPoint position;
position.fAzimuth = 0;
position.fElevation = 0;
position.fDistance = 5;
myEncoder.SetPosition(position);
myEncoder.Refresh();
//Encode test signal into BFormat buffer
myEncoder.Process(sinewave, 512, &myBFormat);
//Ambisonic decoder, also 1st order 3D, for a 5.0 setup
CAmbisonicDecoder myDecoder;
//Allocate buffers for speaker feeds
float** ppfSpeakerFeeds = new float*[5];
for(int niSpeaker = 0; niSpeaker < 5; niSpeaker++)
ppfSpeakerFeeds[niSpeaker] = new float[512];
//Decode to get the speaker feeds
myDecoder.Process(&myBFormat, 512, ppfSpeakerFeeds);
//De-allocate speaker feed buffers
for(int niSpeaker = 0; niSpeaker < 5; niSpeaker++)
delete [] ppfSpeakerFeeds[niSpeaker];
delete [] ppfSpeakerFeeds;
1.5.1-p1;