Upmixer quality depends on matching parameters to the specific recording
Evidence
It needs to be emphasized that, when playing stereo music through these algorithms, we are hearing “ambience extraction,” not reverberation synthesis. All of the reflected and reverberated sound that is reproduced in the surround channels was in the recording. It is just redirected to the side and/or rear loudspeakers rather than being reproduced exclusively through the front channels. Consequently, it generally sounds more natural, although it can also sound exaggerated with some recordings; stereo recordings were not designed for this form of reproduction. In order to get a sense of spaciousness in stereo reproduction through two loudspeakers, more “ambiance” (poorly correlated sound) is often recorded than would have been required if surround channels had been anticipated. The solution: use the remote control and turn the surrounds down. — , Toole, Floyd E - Sound reproduction-…, 1736 (
#expands, via linked claim)
Categorization
- XREF: connects to: Upmixers extract ambience already in recordings, not synthesized reverb — , Toole, Floyd E - Sound reproduction-…, 1736
Related
- Upmixers extract ambience already in recordings, not synthesized reverb (similarity 0.94)
- Stereo upmixing quality varies because it depends on the pairing of recording and upmixer. (similarity 0.89)
- Upmixers that overuse the center channel degrade the stereo music soundstage. (similarity 0.86)
- Stereo-to-binaural upmixing splits direct and ambience signals for separate spatial processing (similarity 0.83)
- Stereo playback masks differences between loudspeakers with room reflections (similarity 0.79)
- Matched room curves do not guarantee matching direct sound for imaging (similarity 0.79)
- Excessive center-channel upmixing damages music soundstage rendering (similarity 0.79)
Broader Connections
- Upmixers extract ambience already in recordings, not synthesized reverb
#expands(0.78) — , Toole, Floyd E - Sound reproduction-…, 1736