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pkane2001

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About pkane2001

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  1. What do you mean 'periodic multitones'? What did you do to make them subtract perfectly?
  2. Try the new mtone32_* files I just uploaded. Should have exactly 32 tones this time.
  3. That's because my software is trying to space out all the tones for easier removal after the capture. All the tones that are rejected are between 14Hz and 22Hz, so you're not missing much. If you want, I'll post the files with exactly 32 tones.
  4. Alright. Added two more files. These are named mtone32_... https://www.dropbox.com/sh/ieyurbgbndvjwkz/AADlqUEdxceasMJC3Q2MEYUNa?dl=0 Looking forward to more interesting tests
  5. Here are the files, Tom: https://www.dropbox.com/sh/ieyurbgbndvjwkz/AADlqUEdxceasMJC3Q2MEYUNa?dl=0 60 seconds each, 44.1k and 96k @ 32bits. 44.1k one contains 4178 tones, and 96k file contains 5459 tones. That's because my software automatically removes any tones that are too close to each other (within a few Hz). This gives the notch algorithm enough space between tones to remove the original ones. Oh, and the start frequency is 14Hz. Let me know if you find something interesting to do with these
  6. Yes, the software was designed to measure devices using multi-tone signals. It's functional, but not ready for others to use, quite yet. At some point I may publish it, when I have a little more spare time. Here's an example result using a 20k multi-tone Blue is the full test signal, white is the distortion with the test signal notched-out: The program computes clock drift, frequency response, and TD+N for any number of multi-tone signals, from 3 to thousands. I was also planning on computing phase response, but didn't get to it yet.
  7. Hi Tom, I don't have one matching AP frequencies. I can generate a low-crest multi-tone WAV file at any sampling frequency, with any number of tones, but these will not be exactly the same as those used by AP. Regards, -Paul
  8. Ifi SPDIF iPurifier will do it. Not cheap, and from what I've measured, doesn't seem to help improve jitter when used with a number of decent modern DACs, but it does a competent conversion between SPDIF digital and optical, both ways.
  9. Aww, you guys are just jealous of Frank’s superpower to extract amazing sound from boomboxes and laptop speakers. Next thing you’ll be questioning is if Superman can fly.
  10. Sorry. Probably not obvious, but that was sarcasm in response to the quote from AN.
  11. I'm sure none of them even like music, never listen to it or enjoy it in their own systems. How sad...
  12. I agree. These were never marketed as high-end or state of the art. As a do-it-yourself kit, these are awesome. It's still interesting to see how they perform relative to competition. Nelson Pass has not been shy about stating that he thinks some distortion is preferred, even in his high-end, expensive amps. Interestingly, that's also what Archimago found in his internet THD blind test -- some level of distortion was preferred to none. A little sugar added to the mix makes everything taste better
  13. Or that some has insecticide or antibiotics added, or that wonderful pink sludge.
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