rundhvid
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Apple details headphone jack improvements on new MacBook Pro
Excellent written explanation 👍👍👍elijahg said:
Neither of you are right. It's not the maximum frequency that can be produced, nor is it the encoding bit rate. It's the sample rate. Completely different and entirely unrelated to the encoding bit rate. It's the number of times per second that the audio signal is sampled; sampled meaning a measurement or snapshot of the frequency at that exact moment is taken (or generated in the case of audio out).mike_galloway said:
96kHz is not upper frequency response - it is the encoding bite rate - higher = better resolution but 192kHz is more than necessary to do the job but that's audiophiles for yourandominternetperson said:
The average human can detect sound in the 20Hz to 20 kHZ. 96kHz is way outside the range of human hearing.sirdir said:
Probably that you can't call something 'full resolution' if you yourself deliver a much higher resolution.mike1 said:
Soooo???? You're saying they therefore shouldn't have improved it all then?rundhvid said:Apple says this supports up to 96kHz, and means users "can enjoy high-fidelity, full-resolution audio."—except ’s own Hi-Res Lossless in 192 kHz ߑట䭦lt;/div>
Now where this does relate to human hearing's maximum frequency, is the fact that humans can't generally hear more than 20kHz. Sampling at double that rate means there will be no aliasing errors in the audio - where parts of the audio could be "missed" essentially, as the samples might fall on two sides of a frequency peak. This is known as the Nyquist rate. The sound between the samples is effectively interpolated (averaged), and of course the higher sample rates mean there's less averaging going on. Audiophiles claim they can hear this, but double blind tests have shown that almost no one can actually tell the difference. And the Nyquist rate says 44kHz is plenty high enough to accurately reconstruct a 20kHz signal, proving that high sample rates are pointless.
The bit rate is inversely related to how much of the original audio is thrown away, and how much the MP3/AAC/whatever decoder has to "guess" to reconstruct the audio.
Regarding audio quality and this 192 kHz sample rate: earlier this year, announced immediate availability of ’s music catalog in 192 kHz/24 bit Hi-Res Lossless format (although limited to a subset of the catalog at first)—at no extra cost!!
What is mind-boggling is that ’s hardware is limited to 96 kHz—why?
—my antique +20 year old Denon AV-receiver happily supports uncompressed multi-channel audio in 192 kHz, but neither my TV 4K 2nd gen., nor my Mac mini M1 is able to take advantage of Music’s reference-class format! AFAIK, there is no technical reason for this HDMI-output buzz kill 🤒
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Apple details headphone jack improvements on new MacBook Pro
Apple says this supports up to 96kHz, and means users "can enjoy high-fidelity, full-resolution audio."—except ’s own Hi-Res Lossless in 192 kHz 👀🤭
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'Apple Glass' could project AR directly onto a wearer's retina
Fascinating R&D which highlights why AR is orders of magnitude more complex than VR!
—it seems as investigates the means to render the augmenting visual cues transparent to the brain—that is—deliver visual cues indistinguishable from the objective reality to the brain!
In AR, you Augment the “objective” reality with visual cues. However, the brain functions—in essence—as an anti-augmenting system by dismissing the vast majority of “reality”. Most find such statements counter-intuitive and ridiculous, which is a testament to how effective the brain is at generating the illusion we call reality 😳
If succeeds, the user experience will be trivial and unimpressive: zero fatigue, zero tolerance issues 🤭
Thus, the brain sees the augmenting visual cues as part of the objective reality—thereby providing extremely powerful tools to “the good guys” and equally scary scenarios in the hands of “the bad guys”. For example: a HUD you never interpret as a HUD, with data points in your field of view along traffic signs, trees, pedestrians. This will likely reduce risk of traffic accidents, as you no longer must alternate your focus between the HUD and the surroundings.
For the scary scenarios, have a look at the movie “Anon”, available at Netflix 😱
The visual system is able to shift focus plane by manipulating the curvature of the lens—independent of gaze/position of the eyes. The above next-generation HUD must dynamically adjust the augmenting visual cues to both gaze (trivial) and focus plane (non-trivial, to say the least 👀). Luckily, shifting focus plane is very slow 😉
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EU to charge 'anti-competitive' Apple over reserving NFC for Apple Pay
—this is the greatest post and best advice of all-time 🙏crowley said:I'll wait to read the complaint rather than hysterically wailing about something I don't understand.
Why?
—because humility and respect will set you free to excel in all aspects of life 🖖
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Apple Watch Series 6 oxygen sensor just as good as hospital equipment
—and courtesy of two thousand excellent contributions, you have anointed yourself as deputy of the internet?auxio said:
And yet it works quite well for me:LuvMacs said:
Just as good as hospital equipment???!!!The above is a screenshot of my blood oxygen levels over the past week. I do not have lung or heart disease & am physically fit. Capillary (blood) oxygen levels range from 95 to 100% in healthy adults. As you can see from the screenshot most are the readings recorded by my AppleWatch indicate that I am hypoxic (low oxygen level in the blood).I am a physician & have contacted Apple regarding these inaccurate readings. The response from their engineers was that it was because of my skin pigmentation. I am Asian & while not pale skinned, am not dark either.
Given that you have one post, and there's a Huawei advertisement from someone with 2 posts right afterwards (which quotes yours), I'm skeptical of the motivation behind your post.
anyway, it was a nice gesture you did for the fellow—I’m sure he/she feels welcome in here 🖖🏼
