Off-Axis vs On-Axis Response || Understanding the Measurements Part 2

  Рет қаралды 10,326

Erin's Audio Corner

Erin's Audio Corner

Күн бұрын

In this video I provide an explanation of what off-axis response is and explain the importance of it in measurements and how it impacts what you hear in your room.
Follow this link to view the rest of the videos in my "Understanding the Measurements" series:
• Understanding the Meas...
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If you look forward to more content, don't forget to subscribe and hit the notifications button so you will get updates when new videos are posted. Feel free to give me a thumbs up or thumbs down. Not everyone will like this but I hope it's useful for a lot of you.
My site:
www.erinsaudiocorner.com/
Facebook Page for updates:
/ erinsaudiocorner
If you'd like to support the channel by purchasing a neat t-shirt that would be cool. You can do so at the following link:
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All of my tests are conducted using KLIPPEL Hardware and Software. KLIPPEL is an innovative leader in providing unique test equipment for electro-acoustical transducers and audio systems. Founded in 1997 by Dr. Wolfgang Klippel, the novel techniques developed for control and measurement systems of loudspeakers and other transducers are the result of over 30 years of fundamental research. This provides more accurate physical models of loudspeakers, micro-speakers and headphones valid for both small and large amplitudes. The focus is on revealing the root causes of signal distortion and defects and giving practical indications for improvements in design and manufacturing of audio products. For information on KLIPPEL products, please visit their site below:
www.klippel.de/company/about-u...

Пікірлер: 58
@Space-O-2001
@Space-O-2001 2 жыл бұрын
AB AB Select start - that's a classic Nintendo cheat code right there - Great video Erin, many thanks
@jmporkbob
@jmporkbob 3 жыл бұрын
Since I've started watching you, I've thought that the spectrogram data being displayed radially is much more intuitive. Very ingenious, man, keep it up.
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
Sweet! Thanks for the kind words. :)
@poochymama2878
@poochymama2878 3 жыл бұрын
@24:50 IT'S NOT A HORN, IT'S A WAVEGUIDE! Haha just kidding. Great video! Such a breath of fresh air in the youtube space of high fidelity audio. I enjoy some of those other channels for entertainment, but I fear most of those channels do more harm than good when it comes to leading people towards purchasing decisions. You're one of the very few providing actual good, well reasoned, and well supported(by science) advice and education.
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
All horns are waveguides. But not all waveguides are horns. 😀😀😀
@nietofarias
@nietofarias 2 жыл бұрын
Congratulations!! This video deserves millions of likes!! 👏👏👏
@APSuk2
@APSuk2 3 жыл бұрын
What a goldmine of information, I really do feel now I have a grasp of what these graphs mean. Said it before but the globe plots really are a game changer! Thanks so much Erin for making these videos!
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
Awesome! Glad it is helpful.
@audfrknaveen2256
@audfrknaveen2256 2 жыл бұрын
Data data data !!!! It's wonderful to see your videos. Great job Erin !!!! 😀😀😀👍👍
@ErinsAudioCorner
@ErinsAudioCorner 2 жыл бұрын
Thanks!
@krom447
@krom447 3 жыл бұрын
Really good professionally made set of videos.
@Kevin.L_
@Kevin.L_ 3 жыл бұрын
Definitely my most anticipated series of 2021. Incredible information. Perfectly presented. Thank you!
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
Wow, thanks!
@jual-rakid
@jual-rakid 3 жыл бұрын
Super great job, I hope you always healthy
@eddiejennings5262
@eddiejennings5262 2 жыл бұрын
Thank you, for supplying the CTA spec. I looked at your playlists and saw Dr. Toole; I have several of his papers. I look forward to learning.
@ErinsAudioCorner
@ErinsAudioCorner 2 жыл бұрын
Glad it was helpful!
@Jason-sr3pr
@Jason-sr3pr 3 жыл бұрын
So useful Erin!! For a novice like me your orientation legend is especially useful. Really appreciate your time and effort. Thanks!!
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
You're welcome! I'm glad it is helpful!
@rafalobo5308
@rafalobo5308 3 жыл бұрын
These polar views are awesome!
@IrenESorius
@IrenESorius 3 жыл бұрын
Moo basic education to the people,, ⭐/⭐!!! Cheers, thanks and thanks again Professor E,, 🍻😋👍‍‍
@heathjones1980
@heathjones1980 2 жыл бұрын
Really great video series Erin. Your comment at 30:10 about an instrument operating across 2 frequencies was a bit of a light bulb moment for me - it should seem obvious, but I'd just never really thought about how a nonlinear reproduction of a single instrument would completely change it's character! I'd only ever though about the SPL "ratio" between different instruments at different frequencies. So, thanks for the insight! :)
@ErinsAudioCorner
@ErinsAudioCorner 2 жыл бұрын
Awesome! Glad you found that useful. 👍
@waynetoneseekerandersen2213
@waynetoneseekerandersen2213 2 жыл бұрын
Global polar circle is amazing. That is how you can see everything clearly.
@we8463
@we8463 3 жыл бұрын
This is great thank you very much for for making these videos to educate us to better understand how to evaluate speakers and read measurements! 👍🏻
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
My pleasure!
@we8463
@we8463 3 жыл бұрын
@@ErinsAudioCorner Greatly appreciate your response could you compare the KEF R3 with the KEF LS50 Meta
@benludlow8098
@benludlow8098 Жыл бұрын
Thanks
@garyausten5939
@garyausten5939 2 ай бұрын
Would it be an advantage in certain situations with a bookshelf speaker to place it upside down (woofer on top)?
@ron521
@ron521 6 ай бұрын
I would venture to guess a metal dome tweeter has a wider off axis sound dispersion than a paper cone tweeter.
@nietofarias
@nietofarias 2 жыл бұрын
I'd love to see a review of the harman kardon aura studio 3 spectrogram. It's a 360 degree directional speaker. Would you plan to make one? Thanks!
@mixxeerr
@mixxeerr 2 жыл бұрын
Hi Erin, just a sanity check - what is vertical and what is horizontal when you are measuring a drive unit like for car audio? There is only a reference plane after you install it right? Just like you can measure vertical/horizontal for home speakers only when the speakers are installed in their boxes and you use the tweeter as the reference plane.
@ErinsAudioCorner
@ErinsAudioCorner 2 жыл бұрын
A car audio driver has the same vertical and horizontal response unless it's not circular. For most boxed speakers, the tweeter is the reference plane, yes. However, it's not always the case. For example, waveguided speakers often have their reference plane between the midwoofer and waveguide/tweeter.
@burkut72
@burkut72 3 жыл бұрын
Great video, thumbs uP
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
Thank you! Cheers!
@user-ok8so4xz9z
@user-ok8so4xz9z Жыл бұрын
Hi Erin, once i saw a video that you have made that showcasing 3 speakers and their off-axis respone - demonstaring which one is EQ freindly and which one is Impossiable to fix . i cant find it. can you please share the links ? many thnaks bro
@johnlane7707
@johnlane7707 3 жыл бұрын
Man, all these measurements sound tough. Wish someone would invent a robot that would do this for us 😅
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
Beep-boop beep-boop. 🤖🤖🤖
@gerritgovaerts8443
@gerritgovaerts8443 3 жыл бұрын
such a robot exists , built by Klippel
@nickfountain8420
@nickfountain8420 3 жыл бұрын
Rolling, in my 5.0 with the rag top down so my hair can blow! Damn you for putting that song in my mind 🤣🤣
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
YES! It took way too long for someone to catch that! 😅
@nickfountain8420
@nickfountain8420 3 жыл бұрын
@@ErinsAudioCorner Up, down, Up, down, select start also! 🤣
@davel6979
@davel6979 3 жыл бұрын
Question about a speaker’s directivity or off axis response and how this relates to listening in mono vs stereo. If you measure a singular speaker that exhibits narrow off axis behavior is that broadened or widened when you listen in stereo? Broadened more in a LCR or home theater set up? Or is this unrelated?
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
The radiation pattern of a speaker is all on its own. How it reacts in the room and how it pairs with speakers is a sub-set topic of the radiation pattern, though.
@mb-electricalservices
@mb-electricalservices 3 жыл бұрын
Is it true then that only a speaker type like the D&D 8c and Kii 3 are any good in a corner with a sidewall close by or will a wide dispersion speaker like the Genelec 8340 be ok there?
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
It depends on the design. Some speakers are intended to be placed near a wall to get some "boundary reinforcement" in the bass region. Generally speaking, though, any speaker with a rear port should not be placed near a wall and if speaker isn't otherwise designed to be placed near a wall then it can hurt the enjoyment of the speakers. The Genelecs you mentioned have a rear port. I would not place them near a wall.
@jharloe
@jharloe 2 жыл бұрын
Are you located in Texas ?
@ErinsAudioCorner
@ErinsAudioCorner 2 жыл бұрын
north Alabama
@captainhemo00
@captainhemo00 3 жыл бұрын
Aaaaah, an old Contra player you are !!
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
Ding ding ding!!!
@gerritgovaerts8443
@gerritgovaerts8443 3 жыл бұрын
Agree with most of what you say , but I notice a bit of incoherence in your thinking . If indirect sound should have the same sound signature as the on-axis sound (and it defintely should be identical) then why stop measuring at 90 degrees ? You should continue to 180. The sound radiated to the back is also going to hit a wall and contribute to the indirect sound . This becomes even more important for dipole speakers . An ideal dipole speaker should have constant perfect directivity throughout the whole frequency range and hence flat power response. These can be designed (for horizontal dispersion) and built with current available drivers , but you should aim for a no-baffle (naked driver) design in mids and high
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
I don’t stop measuring at 90 degrees. Not sure why you think that? All the spectrograms show 360 degree data. 👍
@gerritgovaerts8443
@gerritgovaerts8443 3 жыл бұрын
@@ErinsAudioCorner I was commenting before the video ended . In the beginning you did show a limited 0-90 measurement , that's why . Sorry
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
It happens a lot. No worries.
@gerritgovaerts8443
@gerritgovaerts8443 3 жыл бұрын
Not all speakers radiate omnidirectional in the bass : cardioid and dipoles definitely do not !
@ErinsAudioCorner
@ErinsAudioCorner 3 жыл бұрын
True. I forget that as I’ve yet to test a home audio speaker that is directional down to 20Hz. I did test the DD8c which is cardioid but above about 150-200Hz.
@gerritgovaerts8443
@gerritgovaerts8443 3 жыл бұрын
@@ErinsAudioCorner The Kii 3 with subbass extension are supposedly true cadioid to 20 Hz IIRC. My own DIY Constant Directivity dipoles are also CD (in horizontal plane ) from 20 Hz to 20 Khz (measured myself and confirmed) . It's a 3-way active system and all units operate under their first dipole peak , so it uses a lot of DSP (miniDSP) . Woofers in a H-frame , mids (d'Appolito) and dipole (AMT) tweeter naked , without baffle
@rodrazvan9656
@rodrazvan9656 2 ай бұрын
86x10^55584965853321 Mathematical LIKE for you. I absolutely enjoy it and learned a lot. Thank you
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