Recent content by Mr.Jacob
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MDAQS For Beginners With Jacob Soendergaard From HEAD acoustics
Hey @Trinkle, I feel like you're making some assumptions here, that I can maybe help clarify. First of all, I don't know how you ended up with the a sample size of 100. - I'm not sure if we have actually posted the total sample size in writing, but throughout the various videos HEAD acoustics...- Mr.Jacob
- Post #5
- Forum: Head-Fi Audio Measurement Lab
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Dr. Hans W. Gierlich On The Future of Audio Quality Testing: More Than Just Frequency Response
I don't think your analogy here is exactly spot on. We're not trying to replace the 0-100kph measurement with a perceptual model. We're trying to come up with a model that helps explain how the vehicle is to drive. The feeling you get behind the steering wheel. 0-100kph is one (rather...- Mr.Jacob
- Post #66
- Forum: Head-Fi Audio Measurement Lab
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Dr. Hans W. Gierlich On The Future of Audio Quality Testing: More Than Just Frequency Response
Appreciate it. 🙏 And credit goes to Magnus and the rest of the team working under Dr. Gierlich for the excellent research spanning many years. I am happy to answer thoughtful and genuine questions like yours as best as I can. Your link doesn't pin down a timestamp, but I'm assuming you are...- Mr.Jacob
- Post #62
- Forum: Head-Fi Audio Measurement Lab
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Dr. Hans W. Gierlich On The Future of Audio Quality Testing: More Than Just Frequency Response
Hey @castleofargh, sorry for the late response. I'll try to elaborate a bit on the auditory tests. The philosophy behind the MDAQS algorithm is that we all listen to music binaurally, regardless of the playback device (car stereo, IEMs, BT speakers, etc.). And the goal was to create an...- Mr.Jacob
- Post #57
- Forum: Head-Fi Audio Measurement Lab
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Headphone Measurements: The New Standard, Part 1
Somewhat related to that, this illustration might help. It appears to me that what the 5128 is trying to do is to improve the physics of measuring. That means a redesign of the pinnae/concha/ear canal, as well as creating a new acoustic coupler that better matches the human ear impedances etc...- Mr.Jacob
- Post #47
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
Well that brightens my day! Thanks @sidecross! :beerchug:- Mr.Jacob
- Post #74
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
Oh man. I sense trouble. Firstly, regarding the ANC study, the only place where we really factored in the output of the headphones, was for the final 3QUEST analysis. (all the other tests were with no headphone playback, just different ANC modes and varying BGN scenarios) For the 3QUEST tests...- Mr.Jacob
- Post #72
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
That's an interesting idea, because of the ability to essentially favor certain frequencies over others, but implementing this in an ANC design would definitely require some creative solutions. The ANC headphone will typically use some combination of passive attenuation and then feedback/forward...- Mr.Jacob
- Post #62
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
Hey @arnaud, yep, Zwicker is an easy example to use, because most in the industry is familiar with it (even the graybeards who have been doing this for 30+ years :wink:), and today it seems a rather simplistic metric. The Brians (Prof. Moore and Dr. Glasberg) have been cracking away at this...- Mr.Jacob
- Post #59
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
In addition to the white noise masking effects of the washing machine, this is also a great example of how our hearing is so sensitive to the changes in level. As you point out, the beeps are very quiet, but they "come out of nowhere" and really trigger our sense of hearing. The droning on of...- Mr.Jacob
- Post #57
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
Hey @johnn29 - thanks! And great discussion topic! We didn't dive too much in to the details of the background noise reproduction system in the video, but I'm happy to share more here. @castleofargh is spot on. For you guys (and others who are interested), the system complies with ETSI TS 103...- Mr.Jacob
- Post #40
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
Hey @csglinux, thanks for watching! I'm happy you had the time to do so, and that it sparked some commentary. I feel you might be reading too much into my perspective on fft analyzers. Others in the thread (pfzar, arnaud, castleofargh) have already pretty much nailed it, but I'd like to answer...- Mr.Jacob
- Post #39
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
Enjoy the soup :slight_smile: Look forward to hearing from you.- Mr.Jacob
- Post #18
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
This is true and an important point worth emphasizing.- Mr.Jacob
- Post #15
- Forum: Head-Fi Audio Measurement Lab
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ANC Is More Complicated Than It Sounds: Advanced ANC Headphone Measurements
I'm right there with you. There is so much to unpack here regarding ANC, noise dosage, hearing loss etc. I find it super fascinating. In my previous job, I remember consulting on a project at a brewery, where the management (unwitting of the consequences) allowed all their workers to wear...- Mr.Jacob
- Post #10
- Forum: Head-Fi Audio Measurement Lab