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Post by jandl100 on Dec 10, 2020 20:59:15 GMT
>So it there are gaps in the samples, why aren't there gaps in the waveform?
It's the mathematics of Fourier transforms and sine wave reconstruction. Sorry, but I don't think there is a proper non mathematical answer.
It's based on the idea that is approachable, though, that an analogue sine wave can be precisely reconstructed by sampling just two points within a single cycle.
Also, any complex waveform can be completely represented by the sum of a number of sine waves.
Put those two things together and you can start to get the idea that a limited number of samples can fully represent a complex waveform like music.
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Post by jandl100 on Dec 11, 2020 8:30:12 GMT
So, Oli, now you've seen "macca's video" are you now more comfortable that digital sampling doesn't actually lose any information? There are no musical information losses between the samples. There is only 1 mathematical solution to digital conversion and that is the correct one. Analogue in = digital out  |
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Post by jimbo on Dec 11, 2020 9:57:57 GMT
Jerry, can I ask how your R2R DAC compares with previous DACs you have heard. Is the presentation different?
Might be difficult one to answer as I know you've had quite a few DACS! |
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Post by jandl100 on Dec 11, 2020 10:36:57 GMT
Jerry, can I ask how your R2R DAC compares with previous DACs you have heard. Is the presentation different?
Might be difficult one to answer as I know you've had quite a few DACS! Hi Jimbo I'm really happy still with the MyST R2R DAC. I wouldn't want to swap back to any other DAC I've had that I can think of. I only recently realised that I've had a R2R DAC before but wasn't even aware of the DAC tech at the time. That was a Metrum Mini DAC. Tbh it didn't make that great an impression. I'm certainly enjoying the MyST a lot more with no thought of moving it on. So I guess I have to conclude that R2R in itself is not a magic bullet, and a lot depends on the implementation. |
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Post by jandl100 on Dec 11, 2020 10:57:32 GMT
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Post by misterc on Dec 11, 2020 11:22:07 GMT
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Post by jimbo on Dec 11, 2020 12:45:41 GMT
Thanks Jerry, the DACs you have mentioned look a reasonable price too. I have a feeling we are going to see a lot more of these R2R Dac designs coming onto the market shortly.
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Post by macca on Dec 11, 2020 13:56:28 GMT
Three and a half grand though. |
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Post by macca on Dec 11, 2020 13:57:40 GMT
Thanks Jerry, the DACs you have mentioned look a reasonable price too. I have a feeling we are going to see a lot more of these R2R Dac designs coming onto the market shortly.
there's already shedloads of them, it's not a new thing. Don't seem to be many at a reasonable price though. |
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Post by misterc on Dec 11, 2020 16:11:01 GMT
Martin
Sure you can find one used somewhere? they also demonstrate a great response to upgrades.
Also Metrum are no longer trading, however the owner has started another company since.
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Post by macca on Dec 11, 2020 17:09:46 GMT
Aye probably but would still be a lot more than I'd be prepared to pay for a DAC though. Plus I only bought a new one a few months back.
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Post by jimbo on Dec 11, 2020 20:03:16 GMT
Problem with DACS is whatever is flavour of the month is usually bettered in a very short period of time bit like what happened with digital photography.
I would say the life span of a DACs cutting edge is probably 6 months.
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Post by sq225917 on Dec 11, 2020 22:21:17 GMT
That's pretty much on the money if you base your buying decisions on the opinions of others.
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,407
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Post by Bigman80 on Dec 11, 2020 23:30:38 GMT
Problem with DACS is whatever is flavour of the month is usually bettered in a very short period of time bit like what happened with digital photography. I would say the life span of a DACs cutting edge is probably 6 months. Yes, but vinyl is hardly cutting edge lol |
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Post by jimbo on Dec 12, 2020 6:57:28 GMT
Problem with DACS is whatever is flavour of the month is usually bettered in a very short period of time bit like what happened with digital photography. I would say the life span of a DACs cutting edge is probably 6 months. Yes, but vinyl is hardly cutting edge lol Haha indeed but like the bicycle, no one has come up with anything better to do the job!
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