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iOS 14.6 Beta 1 Code Hints at Upcoming HiFi Apple Music Support
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I cannot. And, based on scientifically conducted blind experiments, neither can almost anyone else.
If that’s the case, there will be zero uptake of the service and it is absolutely pointless for any of the streaming services offering it, though they all do? Anyhow be sure, Apple will somehow convince the masses that what they are offering is tuned to human hearing and everything to this point has been a compromise; give it a name and make a mint from it.
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The first music service to offer it is gone. (Ask Neil Young). Tidal won’t reveal how many subscribers it has, because it has a tiny number. If anyone cared, Neil Young would be a billionaire and Tidal wouldn’t have just been bought for peanuts.
Reminds me of Monster Cables (and worse, the ridiculously expensive super high end "audiophile" interconnects that people spends thousands on).
I hope they wouldn't gate it to AirPods. I have zero interest in them, but I do have my AppleTV connected to a pretty decent audio system, I wouldn't mind better quality audio on that platform. I also have decent wired headphones so I hope it's not limited to bluetooth.
The monster cables were an absolute fraud; they compared themselves to basic composite cables
There are some good reasons to go for a premium cable if you can afford it, to a point. Since HDMI has no error correction more expensive cables use a variety of techniques to reduce bit errors being received on the receiving end.
Neil Youngs' service failed for a lot of reasons, the pono player being a major cause:
Why People Should Take Neil Young's Subscription Success More Seriously
People who laughed at Neil Young for his PonoMusic download platform should learn from his instincts with NeilYoungArchives.com project.
www.rollingstone.com
"ArsTechnica called the $400 PonoPlayer: “A tall, refreshing drink of snake oil.” The Washington Post one-upped that for cruelty, asking: “Has Neil Young finally managed to make something worse than Trans?”
Stop it. HDMI absolutely has error correction. HDMI uses 4b/10b encoding for each data island period, which in turn includes 8 bits of BCH ECC parity data for error correction. Each subpacket is 64 bits with 8 bits of BCH ECC parity data. Not to mention that most any audio codec has its own error correction on top of the packets.
Actually CD had it fair amount of issues as well. If you had a DDD CD then yes, absolutely. But sadly for many artist it was AAD or ADD if you were lucky and then it was just a format change. Didn't gain much else versus the LP Record Album. And even then digitally recording and mastering wasn't always that great.
Times have changed though, as you can easily digitally record in your bedroom. But mastering especially is a skill...
Not full duplex.
"HDMI in particular, there's no error correction at all on the video data (though there is on the audio and control data)."
Long video discusses HDMI cables in depth with Audioquest. Sound United is the parent copy of Marantz, Denon, Polk, etc. In another video they reported that 90% of the component problems that they deal with are due to poor cables.
Then you are lucky that you can use cheap cables without problems. I have experienced numbers of failures of cheap cables which were fixed by replacing with a higher quality one. Some of my signal paths are convoluted though.
Not full duplex.
"HDMI in particular, there's no error correction at all on the video data (though there is on the audio and control data)."
Long video discusses HDMI cables in depth with Audioquest. Sound United is the parent copy of Marantz, Denon, Polk, etc. In another video they reported that 90% of the component problems that they deal with are due to poor cables.
Then you are lucky that you can use cheap cables without problems. I have experienced numbers of failures of cheap cables which were fixed by replacing with a higher quality one. Some of my signal paths are convoluted though.
When did we start talking video? This whole thread is about audio.
In any event, the thing you cited is wrong. While it is true that the reed solomon error correction is not full duplex, that does not mean there is no video error correction. It means that when too many errors occur at once, they cannot be corrected, because there is no mechanism for requesting a retransmission. There is also TERC4 error correction that can be used to detect and repair errors in the received video transmission. See the section of the HDMI specification starting on page 61.
e.g. “
At TMDS clock frequencies less than or equal to 165MHz, the Sink shall recover
data at a TMDS character error rate of 10-9 or better, when presented with any signal compliant to
the eye diagram of Figure 4-20. At TMDS clock frequencies above 165MHz, the Sink shall
recover data on each channel at a TMDS character error rate of 10-9 or better, when presented
with any signal compliant to the eye diagram of Figure 4-20 after application of the Reference
Cable Equalizer.”
You are reading forum posts that are just wrong.
Also, HDMI 2.1 uses forward error correction, which pretty much eliminates any possibility of uncorrectable errors in real life.
You did. You did not say "HDMI audio has error correction".
Which is exactly my point, and the thrust of the quote.
What’s your point? You went from “HDMI has no error correction” to ”HDMI has no video error correction” to “HDMI has some video error correction but it’s not good enough?”
HDMI has actual real error correction for audio and video. Similar error correction that is used, for example, in every CD player. Like any static error correction, it cannot recover if the number of errors per “word” is bigger than a certain value. That doesn’t mean it isn’t error correction. And with hdmi 2.1, even that limitation is essentially gone, because FEC is used.
8 bits of error correction for 64 bits of packet is a LOT of redundancy - you would have to have a TON of errors to not be able to correct (and, again, that is for the older versions of HDMI that do not have FEC).
And another shift of stance. Build quality, ie failures, has nothing to do with getting better quality signal. Amazon basics are fantastic build quality as well. But then again the whole connector isn’t really intended to keep moving in and out all the time. My full path is 4K all the way from Oppo Blur Ray or ATV 4K through the Denon AMP and to my projector or OLED.Not full duplex.
"HDMI in particular, there's no error correction at all on the video data (though there is on the audio and control data)."
Long video discusses HDMI cables in depth with Audioquest. Sound United is the parent copy of Marantz, Denon, Polk, etc. In another video they reported that 90% of the component problems that they deal with are due to poor cables.
Then you are lucky that you can use cheap cables without problems. I have experienced numbers of failures of cheap cables which were fixed by replacing with a higher quality one. Some of my signal paths are convoluted though.
A more expensive cable is not going to give any better sound or audio. That is just not true.
Surely this could be surround sound, Spatial Audio for music on supported tracks? It's a real shame that you can't hear surround from Apple TV right now, but if they could enable Dolby Atmos audio on AirPods Pro and Max, that'd be awesome.
Since we are never going to agree, let me summarize:
1. You say that "neither can almost anyone else" tell the difference between high res and compressed music. There are a lot of posters on this thread, and other forums, that state that this is not the case. Science has its limits. You can't make statements about the general population since most have not had the opportunity to evaluate hires.
2. My definition of error correction is that you are guaranteed that the received signal is identical to the source. You define it differently, accepting partial error correction as "error correction".
I have quite a number of personal experience stories from people I trust who say that better cables can in some cases make a difference. If you have talked to some of these people, done some A/B listening tests, then I would be very interested in hearing your comments.
1. You say that "neither can almost anyone else" tell the difference between high res and compressed music. There are a lot of posters on this thread, and other forums, that state that this is not the case. Science has its limits. You can't make statements about the general population since most have not had the opportunity to evaluate hires.
2. My definition of error correction is that you are guaranteed that the received signal is identical to the source. You define it differently, accepting partial error correction as "error correction".
I have quite a number of personal experience stories from people I trust who say that better cables can in some cases make a difference. If you have talked to some of these people, done some A/B listening tests, then I would be very interested in hearing your comments.
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They will, and they must!
Any currently available Airpod does not have HiFi codec support, they only support AAC, SBC, both are very limited bitrate codecs. Listening to Tital HiFi with iPhones, Airpods is non-sense, you need cabled Headphones and non iPhone Device to fully enjoy e.g. 3000kps and more. The iPhone headphone Adapter does not make it much better, the iPhone through Lightning DAC sucks anyway. The day they add a HiFi codec through Firmware update, it will work only with Apple Music. Sir, You‘re clearly lacking technical knowledge.
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Almost everyone can't.
He can, since his statements aren't based on anecdotal evidence but actual studies. There are already very few people who can tell a 128 kbit/s MP3 from a CD, and there are far fewer who can tell a 256 kbit/s AAC from a CD.
It doesn't matter how many people say from their own "experience" that they can totally tell the difference unless they performed a double blind test.
Sure, premium cables deliver zeros and ones better. (No, they do not.)
For a digital source which HDMI cables are. Really? Come on dude, look at the science and try and explain that one objectively...
LOL!
People can hear the difference in high resolution audio, study finds
Listeners can hear a difference between standard audio and better than CD quality, known as high resolution audio, according to a new study. The study compared data from over 12,000 different trials from 18 studies where participants were asked to discriminate between samples of music in...
www.sciencedaily.com
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