Does phase shift ACTUALLY cause EQ? Dan Worrall response
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- Опубликовано: 21 июн 2024
- Dan Worrall made a video not too long ago talking about phase shift when using EQ, and that EQ doesn't cause phase shift but rather phase shift causes EQ. Despite mostly agree with Dan, I offer an alternative perspective with reactance being the thing which causes EQ. I go into detail here with an all pass filter circuit and discuss the importance of reactance.
Dan's original video: • EQ Doesn't Cause Phase...
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Love to see the more deep divey technical stuff- thanks!
I like how Dan ends his video by asking "What voodoo magic causes phase shift in an all-pass filter?" and you continue the conversation from there
I love seeing you make all the troo beliebers big mad lately! Keep up the good skeptical work
Well explained🎉
Very interesting subject. Awesome. And yes Dan does awesome videos .
thanks
Yes, this is great! very effective tutorial. Would love to see more on op amps, tubes and transformer interactions etc...
thanks. i feel like this video was maybe too complex though and so got less interest than previous videos, so i need to find a better balance of complexity i seems
YESSS!!!! MORE PLEASE!
Electronics and audio is simple. Just get a book and study! I did. You can too.
i wouldn't necessarily say it's simple but i like the positive attitude! 😀
I'm not a big fan of analog audio in general. I once had a course on it in university and while I forgot most of what was going on there I still remember that every analog component has multiple functions at the same time. one of those basic components for example both lowpass AND saturates the signal, which would be 2 entirely unique and seperated processes in digital audio, which is why I feel like digital audio does a more precise job at explaining how certain effects work. for example filters can be either FIR or IIR. they both consist of short gained delays and the only difference is that IIR filters also have feedback delays. the real question is not "what's a filter?" because if you tell people it's just a bunch of delays they still don't know why the delays cause phase shifts or frequency responses, but the question is how to calculate coefficients for filters to make them have these specific properties. and suddenly you find yourself in the mids of terms like z-plane, complex numbers, unit circle, ecliptic filters, biquad filters etc. so if i was asked what's a filter i'd say: a configuration of delays based on trigometric equations to fulfill certain frequency and phase responses
not sure about saturation here in the LP filter as caps and resistors don't saturate as such... most of the formulas you use on dsp come from analogue principles. of course circuits are more complex because of current flow and impedances but there are many shared principles and a lot of the math you use literally originates from telephone electrical engineering manuals
@@APMastering that's true. a lot of the great ideas in dsp come from analog inspiration. but still they end up being more precisely formalized in the world of dsp math
Is this electronic engineering?
yeah
What do we do?
listen to captain beefheart
This is inception. Dan could now make a video about reactance, saying: there is more to say here. Without physics, we would not have reactence or a universe or electricity...
i don't see it exactly like that but ok
@@APMastering I would argue that framing is about adopting the most useful way of viewing of a concept, not about which of two valid viewpoints is more fundamental. If you are building an EQ or doing engineering, I'd argue your view has more utility, if I'm using an EQ, then it's most useful to know that phase shift is what is bringing about the change. Edit: I didn't mean to demean your video. It's not "just" inception, it's a fascinating and well thought out video. The undertone of one-upmanship is slightly irritating but that's your algorythm-win I guess.
ok i get what you mean. i really tried to avoid any oneupmanship vibes here by praising his video etc however i had a genuine nitpick about saying you can drive filters from all passes because as i show, all passes contain filters, so it's not really a chicken and egg thing like his follow up but a different cause, and i didn't see anyone saying that, so i thought it could be a valuable addition to that theme here on audio youtube
@@APMastering Seems fair. At the end of the day the video is leveraging extranious detail / nitpick to marketing your paid content to Dan Worrels community. At the same time the framing is less useful to Worrels audience. I think I would feel differently if you weren't selling something at the end of this. I don't think you are doing anything wrong, but something feels disingenuous. Edit: The same issue with your "all digital eq is the same", the vibe is clickbaity/arrogant and I'm leaning towards not engaging with your content because of it, which is a shame because you seem informed and smart.
@@GingerDrumsthe explicit public mission statement of my channel is to create entertaining videos on audio and in doing so promote my courses. there's nothing hidden or trojan horsed, it's written in my public youtube about section and i promote my courses in every video. If you don't want to buy my courses, don't, but that has nothing to do with enjoying my content otherwise and i wholeheartedly reject the idea that having products to sell is bad. The other people on youtube are either amateurs with bad content for free, or professionals monetising in another way, for example through affiliate and paid placements which is hidden and not impartial at all. i'm impartial and obviously transparent with what i'm selling. if you don't like my offerings, you can watch my content without buying them