Hi. Thanks for this neat video. I am not sure that phase is not perceived by human ears... what I read in the past is that phase of an audio wave is synonym of distance. If you change the phase, you may change the 3D effect of the audio. If so, it would be even more perceptible if you have stereo... for example, the exact same wave (I mean, same frequency), but with difference of phase. You may feel your left ear is closer to the emitter than your right ear, or the other way round. Another approach that includes phase is group delay and phase delay. As said earlier, I do not master digital filters but I have way more experience in analog electronics and automation. I don't know much about digital filters as I only studied their theory at school but never have gotten the opportunity to run some practice around them.
Yea, change in phase of a signal is totally perceptible when summed up with other signals. Difference in phase is how we get filtering in the first place! What I mentioned in the video is that change in phase makes no perceptible difference when listening to a signal in isolation. Listening to a single mono signal in isolation, changing the phase is imperceptible.
Fun fact: Although it's very well known that an IIR cannot have a constant group delay (linear phase response), you *can* have a constant (very close) group delay by applying an IIR to a *time-limited* signal in forward direction, making sure to keep filtering until the tail decays enough, and then in *backward* direction.
This guy needs to find a new career. EE and digital signal processing is not something he understands.. just dumb babble talk. Anyone is better spending their time reading Oppenheimer's book.
![[#5] IIR Filters - Audio DSP On STM32 with I2S (24 Bit / 96 kHz)](/img/n.gif)
Finally a comprehensive and visual way to understand these concepts. Thanks !
Thank you, it's took it's time, but hopefully it'll be useful to beginners.
Long time awaited!
Long time indeed!
Another amazing video from Akash senpai 🤩
great work! I finally understood what an IIR is
That's awesome!
This one really helps me a lot to understand IIR filter. Very glad if you can make a video about adaptive filter.
Thanks! Probably not going to do that in this series. This series is mainly about audio and with as little mathematics as possible.
So good man thank you these videos, should be on the ytube front page
Thank you so much for such a clear explanation
You're welcome!
Very informative video. Thank you very much!
Hi. Thanks for this neat video.
I am not sure that phase is not perceived by human ears... what I read in the past is that phase of an audio wave is synonym of distance. If you change the phase, you may change the 3D effect of the audio. If so, it would be even more perceptible if you have stereo... for example, the exact same wave (I mean, same frequency), but with difference of phase. You may feel your left ear is closer to the emitter than your right ear, or the other way round.
Another approach that includes phase is group delay and phase delay.
As said earlier, I do not master digital filters but I have way more experience in analog electronics and automation. I don't know much about digital filters as I only studied their theory at school but never have gotten the opportunity to run some practice around them.
Yea, change in phase of a signal is totally perceptible when summed up with other signals. Difference in phase is how we get filtering in the first place! What I mentioned in the video is that change in phase makes no perceptible difference when listening to a signal in isolation. Listening to a single mono signal in isolation, changing the phase is imperceptible.
golden content
Fun fact:
Although it's very well known that an IIR cannot have a constant group delay (linear phase response), you *can* have a constant (very close) group delay by applying an IIR to a *time-limited* signal in forward direction, making sure to keep filtering until the tail decays enough, and then in *backward* direction.
Yea that is a cool thing you can do, if the use case is non-real time.
You enlightened me!
Aww, thanks so much for the support!
This is amazing! Thank you! I like and I subscribe
Thanks for checking it out!
This guy needs to find a new career. EE and digital signal processing is not something he understands.. just dumb babble talk. Anyone is better spending their time reading Oppenheimer's book.