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Stub Mandrel

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Everything posted by Stub Mandrel

  1. I made a hifi amp using two as a teenager in the 70s. It impressed my peers 🙂 Filled with nostalgia I have many of the bits (including the power transformer - an RS kit - I wound the secondary by hand!) and have accumulated some more and will be making a new version at some point in the future
  2. Interesting looking here: https://www.gov.uk/guidance/working-safely-during-coronavirus-covid-19/performing-arts#arts-4-7 It says:
  3. It's not digital... there is an ultrasonic bias signal mixed with the audio signal that makes all the magnetic domains jiggle about. During silence, all the domains average to zero. At other times the audio affects the net alignment of domains so the final signal is proportional to the audio (ignoring frequency dependent effects that are processed out). This means the signal can be read back with no more than a simple coil that creates an electrical signal as the magnetic field changes.
  4. I wasn't going to go there as of recently I've learned that it's a rather nuanced effect so careful design is needed for it to work (as your comments imply).
  5. True... I had in mind the venerable and almost indestructible TDA2030 which I see has "short circuit protection, thermal shutdown and SOAR protection".
  6. Thanks, but no. For some reason I can't just glance at an isolated not and 'see' what it is. I have to 'work out' which line or space it is on, then translate that to a note, then decide if it needs to be sharpened or flattened. That's too slow for reading. To an extent I can, once I have found a note, follow the ebb and flow up and down, but if there's a big jump I have to work it out. To some extent I can memorise what one place is, but after a while it fades again. And even if I 'know' that the middle line id D (I don't, I had to look it up) it takes me a finite amount of time to work out that the note is on the middle line. The more I try the more obvious it is that my problem is not memorising what notes are where, its actually working out where the note is on eth stave that takes the effort. I think it's like word-blindness. To a degree I can 'read' tab although most tab makes a pig's ear of the rhythm, but sometimes I still get 'lost' and play the wrong string. Fortunately the bigger tonal gaps between tab lines mean I usually 'know' pretty much where I should be playing so I find tab easier. I suspect my personal experience isn't that of many others.
  7. I try. Every time I try, it's going nowhere. I can do the rhythm easy enough, but not the pitch. I even struggle to work out which line (or space) a note is on, let alone associate it with the pitch for that place.
  8. I'm trying to 'translate' it with a drawing of the bass clef and its notes and it's very painful for me, even in C 😞 I don't suppose there's a teeny chance the notation software you use might serve up some tab?
  9. The have probably been overtightened and are just spinning in their holes. Try levering them up with a flathead screwdriver under the head while turning them.
  10. To me it looks like the poly you used hasn't fully dried and is reacting with the nitro.
  11. Back in BBC micro days one used a sine wave with a dash of white or pink noise at the beginning. 🙂
  12. Well it gets played more than any of my other basses. It isn't very loud, but other than that...
  13. What role do you take in the music? Baritone guitar generally is a low, twangy melody instrument. Bass generally plays bass lines...
  14. That will just be caution about the amount of 'headroom' for larger active signal. It won't break it, just be prepared for harsh clipping/distortion.
  15. They are fourier analyses of the sounds, no time domain in those graphs. Most of the flute overtones are inaudible
  16. And I've doubled the buffer size which seems to have worked for the pausing 🙂
  17. Possibly... where do I check? ASIO4ALL has sorted the latency issue 🙂
  18. Well using a Wav made no difference 😞 I'll try ASIO4ALL !
  19. The ultimate 'wrong' is a Fender Acoustosonic. They give 'fugly' a bad name...
  20. I'm in luck. A) I'm 1962 B) It's not a Jazz 🙂
  21. Are you sure you are doing it right? With my Ammoon it's dead simple, switch on transmitter THEN receiver, let them pair and then use it like a lead.
  22. These graphs could show the movement of a string, and electrical signal, the movement of a speaker coil or the movement of the air. These frequencies are related, but they don't need to be. Just plot the signals and add them together and the resulting graph plots out what you get. Sometimes what you get has some big, fast changes or really slow ones. These may bet 'filtered out' by the characteristics of the circuit or loudspeaker etc. and this can 'colour' the sound.
  23. That's what I'm doing, sorry, but converting to a wav is an idea. I've managed to record my line now, took ages to realise why it sounded so bad was because of latency!
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