The memory of the EFAP handle in the discrete ISM decoder seems to be only party used. E.g. for 4ISM, 64 kbps, BINAURAL_ROOM_IR output, there is > efap_init_data() 215 malloc sizeof( EFAP ) 3544 bytes **40%** while for 5.1 LS output > efap_init_data() 215 malloc sizeof( EFAP ) 3544 bytes **20%** or for 7.14 LS output > efap_init_data() 215 malloc sizeof( EFAP ) 3544 bytes **40%** To get the numbers, the framework must be instrumented by the WMC tool and `MEM_COUNT_DETAILS` activated in options.h. Moreover, for stereo output, the buffer `efap->bufferShort` seems to be unused: > efap_init_data() 237 malloc num_speaker_nodes * sizeof( float ) 8 bytes **0%** and > efap_init_data() 265 malloc efap->vtxData.numVtx * sizeof( float ) 20 bytes **0%**