Dannad wrote: " Does ARC do this? I don’t know, but it is certainly possible. "
I would be surprised if automated room correction algorithms are that sophisticated. But perhaps they are... I must admit that my knowledge of the topic is apparently outdated.
" If we are talking low bass, then the latency can be minimal."
I recall seeing where latency on the order of 16 or 18 milliseconds was a bragging point for a subwoofer-specific DSP system. That corresponds a one wavelength delay at ballpark 60 Hz, relative to the mains (and more than one wavelength north of 60 Hz). Maybe that 16 milliseconds figure was on the high side relative to what’s being done today?
"you either have timing information that is created by two speakers... On the other hand, a lot of spatial cues are volume based... "
My understanding is that localization cues (sound image locations including soundstage width) are primarily conveyed by the first-arrival sound, influenced somewhat by early lateral reflections. And that good ambience (soundstage depth, envelopment, spaciousness, immersion, "you are there") without degradation of clarity calls for a very clean first-arrival sound, followed my minimal early reflections, which in turn are followed by a fair amount of relatively late spectrally-correct reflections, which hopefully then decay neither too quickly nor too slowly fairly uniformly across the spectrum. (These aren't the only things that matter, but are among them.)
Duke
I would be surprised if automated room correction algorithms are that sophisticated. But perhaps they are... I must admit that my knowledge of the topic is apparently outdated.
" If we are talking low bass, then the latency can be minimal."
I recall seeing where latency on the order of 16 or 18 milliseconds was a bragging point for a subwoofer-specific DSP system. That corresponds a one wavelength delay at ballpark 60 Hz, relative to the mains (and more than one wavelength north of 60 Hz). Maybe that 16 milliseconds figure was on the high side relative to what’s being done today?
"you either have timing information that is created by two speakers... On the other hand, a lot of spatial cues are volume based... "
My understanding is that localization cues (sound image locations including soundstage width) are primarily conveyed by the first-arrival sound, influenced somewhat by early lateral reflections. And that good ambience (soundstage depth, envelopment, spaciousness, immersion, "you are there") without degradation of clarity calls for a very clean first-arrival sound, followed my minimal early reflections, which in turn are followed by a fair amount of relatively late spectrally-correct reflections, which hopefully then decay neither too quickly nor too slowly fairly uniformly across the spectrum. (These aren't the only things that matter, but are among them.)
Duke