How do upmixers like Dolby Surround and DTS Neo/Neural work? They attempt to produce rear/center/vertical surround sound channels from a normal stereo source—and often seem to do quite a good job. Explanations I can find are all marketing mumbo-jumbo: “identifies spatial cues” 🤷♂️
Conversation
..the audio coming out of each headphone ear needs to essentially recreate the sound attenuation that happens naturally so you can to trick your low-level auditory systems into thinking the sound is coming from someplace else.”
1
Replying to
This is really interesting! I think it’s almost the inverse of what I’m talking about though: these Dolby/DTS decoders can take a mastered stereo track (two channels) and somehow produce a five-track surround mix (left, center, right, rear left/right). Inverse HRTF?