Dominic Mallinson mentioned TrueAudio.
Anandtech said PS4 audio DSP was based on TrueAudio.
AMDGaming tweeted "The audio chip on PS4 has TrueAudio technology". No-one's talked about TrueAudio on PS4 in public. The only description we've had about how PS4's audio works is mention of mixing (VGLeaks confirmed by Sony) and talk of GPGPU for audio.
We have to the best of my knowledge zero PS4 games demonstrating TrueAudio technology (spatial 3D in headphones), and a slide from Killzone showing CPU processing 160 audio voices.
We have a VR headset described as featuring HRTF 3D audio yet Sony haven't described PS4 as featuring HRTF.
Does the evidence really weigh in that PS4 has exactly the same audio chip as AMD's TrueAudio GPUs? Or that it just uses the same decompress and mixing engine of TrueAudio but not the DSP side?