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pkane2001

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About pkane2001

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  1. You brought up filter slope The software has lots of settings for things I'd like to experiment with, including 20+ FFT window functions, IIR and FIR filter selections, variable frequency and bandwidth of filter transition, etc. It's not because I think all of these have an audible effect, but rather to let me play with various parameters to test how they affect the signal. There are actually a lot more settings that I play with internally in the software, but some I've elevated to the level of UI so others can play with them, if curious.
  2. Alex, you just can't help but to try to pick a fight. Show me where I asked for proof of anything in this thread please. I think I'll just leave you on my ignore list for a while longer.
  3. Ok... I can't speak as to why others didn't answer there, but I can tell you why I didn't: I didn't see or read that post. Is that a good enough reason? 😃
  4. Not sure what you're talking about, Alex. Who asked audiophile fuse question and where? Your link is to an ethernet switch review on ASR and has nothing to do with fuses, as far as I can tell. And no, I don't read every post here or on ASR, so forgive me if I don't answer them all.
  5. @sandyk your Disagree votes are like a badge of honor: I love receiving them! Keep it up. Stay safe and disagreeable, my friend ✌️
  6. Don't get upset, we're just having a discussion. This is, after all, an objective thread about fuses. Don't twist this into the usual "all objectivists are always mocking all subjectivists" argument, it's really not worth the time or the effort. You introduced a paper into the thread that addresses specifically opamps and data converters, which are extremely sensitive circuits unlike power supplies. You've asked if anyone considered the possible effects of a fuse asymmetry on distortions. My answer was: yes, and this effect is irrelevant when talking about a fuse. I gave examples as to why. You, instead, start talking about mocking people, demanding absolute proofs and communal blind testing, closed mindedness, being condescending, cognitive bias, etc., etc., etc. All these things that have not been mentioned once in this thread. Are you trying to start a fight, or would you rather have an intelligent discussion?
  7. Same filter. Do you think that filter steepness well above the audible range is important?
  8. Well, the list price is shown as $225, but it's being sold for $205, so call it a sale, discount, mark-down, etc. As I understand it they drill into an off-the-shelf fuse to fill it with beeswax, is that right? Sounds hard to do without breaking something and potentially very unsafe. What's Best Forum didn't like me when I joined there and asked a few technical questions a few years ago. I was really looking for information at the time, but was told to go elsewhere, so I did 🤷‍♂️
  9. I did. Did you? Here's the sub-title of the paper: The Wrong Passive Component Can Derail Even the Best Op Amp or Data Converter Notice opamps and data converters being mentioned right at the top as the circuits being described. Scott Wurcer, one of the two authors, designed a number of Analog Devices opamps. Scott hangs out on ASR and is a frequent contributor there. You can ask him yourself if he thinks an AC fuse is something to be worried about. I have, but what does this have to do with fuses?
  10. There are circuits with opamps, oscillators, R2R ladders, etc. where it is important to get the correct RLC value of some critical components to get the best possible performance. Additional resistance due to a poor joint or traces that cause parasitic capacitance, etc. can cause problems, even oscillations. That's what the Analog Devices paper is discussing. An AC fuse is not in such a sensitive circuit. As you can see from my previous post, a PS handles aberrations that are much, much worse than anything a fuse can do, all without breaking a sweat.
  11. I'm thinking that it is also "glib" to presume that people familiar with electrical circuits and electronics would not realize or consider the asymmetry of a welded or soldered fuse connector... and ignore it as not being significant in the scheme of things. Consider what a typical power supply goes through after the fuse, and you'll realize that there's a whole lot that's being done to this sine-wave that distorts it in ways that are a thousand times worse than anything an asymmetric fuse weld could possibly do. Just look at what the a full-wave rectifier does to our nice looking AC sine wave. This is extremely distorted with tons of harmonics, DC, etc: And once we apply some filters to smooth this out, we get this (does this look clean?) And yet, when we are finally finished, we get a clean looking DC at the output of the power supply -- very close to a straight line. Do you really think that a tiny asymmetry in the fuse will cause enough of a distortion to make it through to the sensitive electronics while all of these other major aberrations are easily removed?
  12. Yes, of course. This was just to let me experiment with different cut-off frequency and shape filters, it wasn't to produce the best "sounding" filter, if there is such a thing 😄
  13. I construct the filter on the fly, based on the settings specified by the user. The transition bandwidth and the cut-off are both user-controlled, while the slope is computed from these and the desired ripple settings. I pick the size internally to get the lowest pass-band ripple while keeping filter size between 10k-32k taps.
  14. 1. No need to correct. I didn't say DSD is the same as 1 bit PCM. I said: "DSD512 is the same signal, but sampled at 512x the standard PCM rate and with 1 bit samples." 2. Of course DSD requires a low-pass filter. But that doesn't have any effect on any jitter that was already within the audible frequency range, say the 60Hz mains frequency. Proper PCM reconstruction also requires a low-pass (reconstruction) filter. I wrote a DSD/DSF reader a while ago, and decided to make the low-pass filter completely configurable by the user. You can place the cutoff wherever you want, and decide on how wide the transition band should be:
  15. Oh, I see. If you are talking about the inherent clock jitter (not externally modulated one, as I was thinking you meant) then yes. That kind of jitter will be moved way out of audible band by the high clock rate.
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