Resonance is a natural property of physical objects (including rooms that reverberate) and many electronic networks. Resonance is essentially an increased "willingness" to vibrate at certain frequencies. Depending on the particular resonant object or circuit, the resonance may or may not cause a sound to be prolonged....my brain says you can make resonance by emphasizing certain frequencies...
You're confusing overtones with intermodulation. Overtones are harmonics of the fundamental frequency of the note. They exist in the original signal. They're what makes middle C on a clarinet sound different from middle C on a violin. Overtones will only be added to the signal if the system is nonlinear (if there is distortion). We call that "harmonic distortion."...brain says when you mix certain frequencies they make overtones (new harmonic content)...
Yes, most reverb, whether natural or generated artificially, has resonances. But resonances don't generate any new frequencies — they're just an increased willingness to vibrate at frequencies that are already present in the signal....so my brain is unsatisfied when i learn that reverb, which can emphasize and prolong certain frequencies does not in any way add any resonance or overtones to what was there before.
We call that "intermodulation distortion." You get new frequencies that are the sums and differences of the original frequencies. But in a linear system, you don't get intermodulation, so you don't get any new frequencies.
our reverb algorithms aren't exactly LTI because they have modulation
No, because:1. does inter-modulation occur naturally, when you record an amp in a room?
2. does the cab room parameter create inter-modulation?
And:...in a linear system, you don't get intermodulation...
...reverb is linear.
What does it mean to "focus the stereo image into phase?"when i turn on room parameter and focus the stereo image into phase, it feels like it does more than create a stereo picture, it feels like there is a movement to the stereo image.
What does it mean to "focus the stereo image into phase?"
because they are given the space to resonate past 180ms
Nonlinear reflections = alternate universe. Just sayin’.
Actually, I’m running out of ways to say it. Maybe I’ll just stop. Now where’s that blue pill...?
There are so many misconceptions in this. So many unrelated or semi-related concepts jumbled together into a single sentence or two. So many mid-sentence shifts of topic. I literally don’t know where to start to sort it out for you.i understand what you mean about reflections themselves being linear, but my point is regarding the microphone itself and what it picks up, in real life. anything that moves the mic is affecting the phase, so you get the slightest shift in phase when the mics pics up what comes at it next. (and also your ears, as you stand and listen to something. as you move, the phase shifts, and it gives you perception of space, depth, motion, reality.) the phase is changing, because of the mic movement, even if it's just the diaphragm, slightly, but constantly. is that not modulation, distortion, a combination of the two, which individually or combined, are non-linear? a state of constant flux, whereas an IR has a total of 180ms to represent that, and it never moves, it's fixed, static filter, linear. a recording is not linear due to its inconsistencies, and that's what's missing from an IR on it's own, the non-linearity. Just like in the power amp work, there is more non-linearity to be calculated, in a different part of the recording chain. amps are done. IRs are done. Now u just need to be able to tweak the phase of an IR down at the sample level to get it lined up right with a good zero crossing, and all the other frequencies will line up perfectly and auto EQ and balance themselves from sub-lows to dog whistle once it's in phase with your monitoring system speakers.
picture this: a waveform coming from a source, a microphone picking it up. as the microphone pics up the waveform, other things (reality) move the mic, changing it's phase. The waveform from the source is altered from the phase shift. is that waveform still linear? because it got...distorted. modulated? changed. you know doppler effect changes pitch. that's modulation actual. and that's happening to the whole frequency spread of the amp, constantly, ever so slightly, as it's coming at the mic, especially if it's loud as balls.
There are so many misconceptions in this. So many unrelated or semi-related concepts jumbled together into a single sentence or two. So many mid-sentence shifts of topic. I literally don’t know where to start to sort it out for you.
Reflections aren’t nonlinear. Neither are phase shifts or modulation or “microphone movement.”