Generating binaural audio in response to multi-channel audio using at least one feedback delay network

A system for generating a binaural signal in response to a set of channels of a multi-channel audio input signal, the system comprising one or more processors that:

• apply a binaural room impulse response, BRIR, to each channel of the set, thereby generating filtered signals;
• and
• combine the filtered signals to generate the binaural signal,
• wherein applying the BRIR to each channel of the set comprises using a late reverberation generator to introduce, in response to control values asserted to the late reverberation generator, a common late reverberation into a downmix of the channels of the set, wherein the common late reverberation emulates collective macro attributes of late reverberation portions of single-channel BRIRs shared across at least some channels of the set, and
• wherein a content dependent energy equalization factor is applied to the downmix, and wherein a center channel of the multi-channel audio input signal is mixed to the left channel of the downmix with a coefficient of
• 1
• 2
• ,
• and is also mixed to the right channel of the downmix with a coefficient of
• 1
• 2
• .