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guidovelasquez

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Everything posted by guidovelasquez

  1. Gracias @svorkoetter por el increíble software que compartes con nosotros. Ya empezamos a usarlo. Thanks for the incredible program you share with us. we will start to use it.
  2. On the digital filter to be applied, anyone will improve the signal. I think that will depend on the sound of the clock itself. Although personally I think the Wide option is better (160Hz - 16kHz)
  3. I'm analyzing the recording. And I have some observations. The first is that I can think that some buzzing of the 50 hz network is affecting although it is low with respect to the level of the signal. But when analyzing the gradation, in the second 26 drastically disappears a buzz that corresponds to very close to 90 hz. By doing so, the signal is cleaner. If you can determine what causes it, the signal will improve. I get the feeling that the stand of the microphone is not sufficiently padded and the vibration of table or desk that could be the vibration of the fan or the hard disk are transferred to the microphone.
  4. You also did a good job of shielding the peripherals of the microphone. That's where the signal is disturbed. Due to the level of amplification any parasitic noise, it would also be amplified.
  5. Good job Eland. Excelent sound. I have already done an analysis of the waveform and it is excellent. It's like music to my ears. I think that with that level of sound and editing programs can do a good job. Congratulations.
  6. Good job Eland. Congratulations, you are doing a good job. And do not despair about the broken discs ... I have already lost count of how many I have destroyed, due to excessive heat, excessive force, etc. It could be that my response is a bit hasty, but I'm sure you do not need any of the devices that you indicate in the links. they are all POWER AMPLIFIERS. And what you need is a pre-amplifier. And seeing what you used in your project, I would consider that what you need is accurate and nothing more. It is possible that some modifications could be made but they would be minor. I would like to ask you to share an on-screen capture of the waveform to determine the level of the signal you are getting. I send you an example of what I am requesting.
  7. Thanks for your comments and experience Frank. I also work with watches that it is necessary to move the collet. It is a very precise adjustment. And sometimes tedious because the adjustment can easily be exceeded or not knowing in which direction it should be done. Guido
  8. Hi, Frank. Thanks for the data you share. I wish to clarify that I made a mistake in indicating the breadth in my publication. He had indicated an amplitude of 270 degrees. But it is not correct. What you publish is correct. Approximately 235 degrees. Excellent application It strikes me that in addition to indicating the value of beat error in milliseconds, the program also indicates it in degrees. According to my assessment that is very useful, because to correct it, it is necessary to pre-visualize approximately how much the collet must be turned on the balance wheel staff or how much movable stud must be moved. Thank you
  9. Dear Sirs. I share with you a record recording of a Omega Lemania Caliber 9160A. 18000 bph stopwatch. According to my records it presents approximately 4.8 seconds of advance. The beat error is approx 0.2ms and the amplitude is 270 degrees or so. The elevation angle is adjusted by 41 degrees. I share it because someone can be useful. I also want to inform you that to pick it up I am using a caiman clamp to which I soldered a 27mm piezo electric disk with a modified PYLE PP444 preamplifier. In addition to improve the sound and filter unwanted noise I am using the applications for windows: PEACE + APO EQ I also leave a screenshot of the configuration. There are 30 seconds of recording that can be played as a loop. https://mega.nz/#!HaQFTSxA!FATJQ6XI8FYjQBBGqtPjvdVj1i6bZp7RwI5uBgaL7ng
  10. Thanks for the suggestions Frank. Our limitations in the electronics benefit from your experience and knowledge. On a more modern IC, I have tried to find one that can work a low voltage and that does not require a "symmetrical" source of tension that complicated.
  11. Thanks for the clarification. The circuit has not physically tested it. And I had the suspicion that it did not work on the edge of 3 volts. But the explanation is appreciated. I only have one question left and I appreciate the help: would it work with 5 volts from a USB port?
  12. This is the link to find it. https://mindsetsonline.co.uk/shop/mono-preamp-kit/
  13. This circuit option seems very efficient. Especially that the voltage can be from 3 volts to 25 volts. Mono Preamp.pdf
  14. About this: "Balance is just an instant of perfection, stability is more: it is the permanent probability that the balance is not far away" Harm van Veen. The Tao of Kiteflying
  15. Thank you very much for the valuable information you share with us. Can you please share an audio file so that you can compare the sound you get with the components you mentioned, please? Thank you
  16. Thank you very much for your answer B52. And for the details that enrich our trials. I agree with you, it is necessary that you possess skills in the field of electronics and mechanics in order to obtain acceptable results. I have a question about the Junghas Cal 75 movement. Is it 18,000 BPH? Does it run within the acceptable ranges, that is to say, its error to march does not exceed more than 60 seconds? About the 90-year vintage movement, is it a bph that can recognize TG? regards Guido. Here example sund. Omega Seamaster De Ville +18seg aprox. https://mega.nz/#!uCIGzSTZ!OosG2VcTsj7uA8JDCczusvRjFTxIzMk5IVHAzD3UdCk
  17. Thank you very much for your answer B52. And for the details that enrich our trials. I agree with you, it is necessary that you possess skills in the field of electronics and mechanics in order to obtain acceptable results. I have a question about the Junghas Cal 75 movement. Is it 18,000 BPH? Does it run within the acceptable ranges, that is to say, its error to march does not exceed more than 60 seconds? About the 90-year vintage movement, is it a bph that can recognize TG? regards Guido.
  18. Hello B52. Thank you very much for sharing your experiences. We will have to test your project. However, in our limited knowledge and experience we have seen that what has worked best is the piezo electric disk. We know that it has its weaknesses, but even so it can be efficient. One of the reasons why we see that it is so, is that most time machines, use the principle of the vibration sensor instead of the microphone. For the same reasons that you have exposed: The background noise. We would like you to put us a piece of recording in wav or mp3 to check your results. Congratulations. And thanks for getting in touch with other elements that could be used. I would like to know if there is a pre-amplifier with a similar presentation to which you show us.
  19. Excellent document. Although you comment that it does not seem to be aesthetically good, for me it is. It's the best I've seen.
  20. Was expected. The sensor that we are looking forward to be tested is the one that JohnR725 has indicated to us. I am not surprised at all in your statement. Do not worry ... we've also lost time and money on devices like that. https://uk.rs-online.com/web/p/vibration-sensors/0285784/
  21. The positions that produce the greatest amplitudes are the horizontal ones for the balance wheel. The values should be as close as possible, that would indicate that there is no damage or anomaly in the pivots and bearings of the balance wheel axle or something in the pallets, roller ratio.Here I can guess that something happened. the watch received full wind. The main spring is completely wound up and that generates this bounce. (Rebanking.)
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