In the audio realm we talk about “beaming”, “directivity”, “lobing” and “breakup” in speakers. But I find that few people understand what it means. So, I asked René Christensen of Acculution to join me and explain. In the video below, René breaks down the math and gives us practical examples, showing how cone geometry and materials can impact radiation and resonance in transducers.
Please leave a “thank you” for Rene and make sure to leave suggestions for future topics you’d be interested in seeing.
(FWIW, my “interview” videos are not monetized)
Please leave a “thank you” for Rene and make sure to leave suggestions for future topics you’d be interested in seeing.
(FWIW, my “interview” videos are not monetized)
Moved to multi-way.
Some nice simulations but an hour is awefully long. And not very information dense.
Few will watch the whole thing, i expect.
dave
Some nice simulations but an hour is awefully long. And not very information dense.
Few will watch the whole thing, i expect.
dave
Hi,
yeah thanks Erin, this kind of content is quite rare in Youtube, please do more with Rene and others. Although it could have been heavy scientific content it was quite light weight after all, easy to grasp if there is any background thinking the issue at hand. Nicely a little bit more advanced than general forum talk but not too much. Professionals / academics are always good mile ahead general content in forums so there is always something to learn no matter how they phrase it. Interview / podcast format helps with the communication, keeps it closer to hobbyist than academics and thus understandable.
There is one topic I'd like to see, Rene suggests somewhere at the end of the interview that he could auralize your measurement data to hear differences of various speakers in a virtual room, with headphones. Please do this! It would be very cool to hear differences between narrow and wide directivity speakers at least. There is million things that I'd like to listen with such virtual environment, like how the vertical reflections affect sound, how much effect the lobing has to vertical reflections and to perceived sound (because we can adjust the lobes). Removing back wall reflection would be interesting, front wall reflection the same. Test personal preference for wide / narrow dispersion. What is the difference with smoothly rising DI and flat DI. What if DI is high to 2kHz or all the way below 1kHz, how about down to schroeder? How about generating more or less artificial data in VituixCAD, collapse multiway speaker into point source for example, what is the fuzz with point sources? How about baffle edge diffraction? Even if they didn't match reality all of it would be just very very interesting 😀
Unfortunately all the software is expensive and requires skill so haven't been able to do it. Found some auralization libraries to program myself but they don't support balloon data, only some ideal point source and full range patterns. Also, generating balloon data doesn't seem straightforward, but perhaps you or Rene can do it with your data.
Thanks!
yeah thanks Erin, this kind of content is quite rare in Youtube, please do more with Rene and others. Although it could have been heavy scientific content it was quite light weight after all, easy to grasp if there is any background thinking the issue at hand. Nicely a little bit more advanced than general forum talk but not too much. Professionals / academics are always good mile ahead general content in forums so there is always something to learn no matter how they phrase it. Interview / podcast format helps with the communication, keeps it closer to hobbyist than academics and thus understandable.
There is one topic I'd like to see, Rene suggests somewhere at the end of the interview that he could auralize your measurement data to hear differences of various speakers in a virtual room, with headphones. Please do this! It would be very cool to hear differences between narrow and wide directivity speakers at least. There is million things that I'd like to listen with such virtual environment, like how the vertical reflections affect sound, how much effect the lobing has to vertical reflections and to perceived sound (because we can adjust the lobes). Removing back wall reflection would be interesting, front wall reflection the same. Test personal preference for wide / narrow dispersion. What is the difference with smoothly rising DI and flat DI. What if DI is high to 2kHz or all the way below 1kHz, how about down to schroeder? How about generating more or less artificial data in VituixCAD, collapse multiway speaker into point source for example, what is the fuzz with point sources? How about baffle edge diffraction? Even if they didn't match reality all of it would be just very very interesting 😀
Unfortunately all the software is expensive and requires skill so haven't been able to do it. Found some auralization libraries to program myself but they don't support balloon data, only some ideal point source and full range patterns. Also, generating balloon data doesn't seem straightforward, but perhaps you or Rene can do it with your data.
Thanks!
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Thanks for the presentation, Rene. And thanks to @bikinpunk for the channel.
It was cool to see an explanation of why drivers go to crap off-axis. I wish driver reviewers would share 45-degree plots of the distortion to help see this. ::cough:: :::cough:::
It was cool to see an explanation of why drivers go to crap off-axis. I wish driver reviewers would share 45-degree plots of the distortion to help see this. ::cough:: :::cough:::
