Forum Rule: Always post complete source code & details to reproduce any issue!

Search:

Type: Posts; User: UHF

Search: Search took 0.00 seconds.

  1. Replies
    27
    Views
    3,197

    Hello, I'm using KiCAD. I'm trying to get a...

    Hello, I'm using KiCAD. I'm trying to get a decent looking front panel silkscreen and am also playing about with Eagle on Fusion 360. The front panel will be red with white graphics, although JLC...
  2. Replies
    27
    Views
    3,197

    Great to see it coming on! Have you made a sound...

    Great to see it coming on! Have you made a sound yet!?

    Hello, yes TSynth is now six note polyphonic and this is the limit on a T3.6. I've designed a PCB and am working on the accompanying PCB...
  3. Hello, if it works perfectly with a test program,...

    Hello, if it works perfectly with a test program, then we can assume your soldering is fine?! What resistance value are the pots, out of interest?
    Can you share the code that reads from the...
  4. Hello I've no experience here, but the first...

    Hello I've no experience here, but the first thing that comes to my mind is - is there a time difference between left and right signals? This could be introduced any where in the signal path...
  5. Replies
    3
    Views
    190

    Yes that's correct.

    Yes that's correct.
  6. Replies
    3
    Views
    190

    Hello, if you want to reset to the start (0...

    Hello, if you want to reset to the start (0 degrees phase) you'll probably need to modify the AudioSynthWaveformSine object (synth_sine.h and synth_sine.cpp) because I believe, setting phase(0)...
  7. Replies
    7
    Views
    246

    If you play all 6 voices/notes at once, do you...

    If you play all 6 voices/notes at once, do you get noises? The order of the audio objects needs to have objects created in order of audio signal flow and this includes objects feeding back to...
  8. Replies
    7
    Views
    246

    Hello, could we see your code please,...

    Hello, could we see your code please, particularly the audio objects and connections - having objects created in the 'wrong' order will cause unwanted noise.
  9. Replies
    27
    Views
    3,197

    Wow it's coming on! I didn't use a breakout...

    Wow it's coming on! I didn't use a breakout board, just a normal 5x7cm protoboard. The Teensy is mounted on pin sockets and all the pins broken out to right-angle pin headers. As mentioned, I use Du...
  10. Replies
    27
    Views
    3,197

    Hello Archie. That's great! Have you got just the...

    Hello Archie. That's great! Have you got just the basic Teensy + audio board producing sound with a MIDI keyboard?
    Yes, the rotary switches have resistors (all about 1k5) between each pole in...
  11. You've come to the rescue! Thanks, exactly what I...

    You've come to the rescue! Thanks, exactly what I was looking for.
  12. Replies
    27
    Views
    3,197

    Hello, I've seen the breakout boards. My...

    Hello, I've seen the breakout boards. My intention is to simply make a PCB and front panel and the rest is up to the individual to get the components and solder them. I want to make this as easy as...
  13. Replies
    27
    Views
    3,197

    Hello, many thanks for the front page feature....

    Hello, many thanks for the front page feature. Just an update - TSynth is just about completely nearly finished :D. The synth part hasn't changed except key tracking works individually for each note...
  14. Replies
    4
    Views
    329

    The pins unused by the audioboard can be used. ...

    The pins unused by the audioboard can be used.
    I made this overlay for my project:
    https://forum.pjrc.com/attachment.php?attachmentid=16714&d=1559444315
  15. Replies
    11
    Views
    579

    Here it is. Can you look at the lfoRate() method....

    Here it is. Can you look at the lfoRate() method. I've assumed 100 COUNTS_PER_LFO is 6Hz and used that as the basis for converting LFO rate in Hz to countsPerLfo. This probably isn't correct but it's...
  16. Replies
    11
    Views
    579

    I've added a method to alter COUNTS_PER_LFO and...

    I've added a method to alter COUNTS_PER_LFO and it gives a nice lfo rate effect, ranging from 500 to 50 exponentially.
  17. Replies
    11
    Views
    579

    Hello I'm trying your Ensemble Chorus effect on...

    Hello I'm trying your Ensemble Chorus effect on my synth, because I want a good stereo chorus with some kind of adjustment and a dry/wet mix. It works great in stereo. I had to change the name...
  18. Replies
    9
    Views
    416

    Thanks for the very quick resolution. I had...

    Thanks for the very quick resolution. I had problems with connecting the display to the SPI on the fast pins as outlined here:...
  19. Replies
    9
    Views
    416

    ST7735_t3 Bug introduced between 1.46 & 1.47

    Hello I'm using a T3.6 with the audio board. I have a ST7735s based TFT attached. It crashes on: tft.initR(INITR_GREENTAB); with nothing further. This has been introduced in 1.47, 1.46 works fine...
  20. Replies
    27
    Views
    3,197

    Hello, yes I'll publish the code sometime. The...

    Hello, yes I'll publish the code sometime. The sound creation and the control of it is finished. All the front panel controls have MIDI CC numbers set up. Patch saving and recall isn't finished (it...
  21. Replies
    27
    Views
    3,197

    There are quite a few improvements that could be...

    There are quite a few improvements that could be made and it would probably end up looking like it's main rival, the Axoloti. A major improvement to the quality is anti-aliasing the waveforms and...
  22. Replies
    2
    Views
    192

    You could just put two delay blocks together...

    You could just put two delay blocks together side-by-side and feed both with the same input. This would achieve the same thing, since the delay taps can be set to any delay time.
  23. Thread: Countdown Timer

    by UHF
    Replies
    5
    Views
    670

    This is interesting, have you considered what...

    This is interesting, have you considered what might fail and have you got contingency? It's going to be continuously running for almost 40 years or more? The LEDs will probably get dimmer, but the...
  24. Replies
    27
    Views
    3,197

    A screenshot of the Audio Design tool to answer a...

    A screenshot of the Audio Design tool to answer a few questions. The modulation connections make it complicated but more voices could be added.

    17512
  25. Replies
    27
    Views
    3,197

    Hello, here's a demo of TSynth. Not quite...

    Hello, here's a demo of TSynth. Not quite Tangerine Dream... but the whole thing was originally inspired by Dave at Notes & Volts TS-1 synth building series. It's designed to show the range of sounds...
  26. Replies
    27
    Views
    3,197

    [queued] TSynth - Two Oscillator Polysynth

    Hello. Another day, another Teensy synthesizer. TSynth is a two oscillator, four note polyphonic synthesizer with a large number of waveforms including user defined, state variable filter, two...
  27. Replies
    0
    Views
    164

    T3.6 ADC channel identification

    Hello, I've got two 16 channel muxs and I (naively) want to run them as fast as possible by running the signal from one mux to one of Teensy's ADCs and the other mux to the second ADC. The analog...
  28. Replies
    6
    Views
    356

    Hello, thanks for the answers. I'm trying to...

    Hello, thanks for the answers. I'm trying to attach the display to the same bus as used by the audio board - bus 0.



    That sounds like a possible explanation. I'll have a go with suggestion b)....
  29. Replies
    6
    Views
    356

    Which is why it works. They should work on the...

    Which is why it works. They should work on the same bus, I thought.
  30. Replies
    5
    Views
    310

    Hello, does that include connecting AGND to GND...

    Hello, does that include connecting AGND to GND on an analog multiplexer? Thanks
  31. Thread: Enable pin

    by UHF
    Replies
    2
    Views
    208

    You can connect it directly without any other...

    You can connect it directly without any other resistor. Check it with a voltmeter if you want reassurance that it's pulling down to ground.
  32. Replies
    6
    Views
    356

    SPI - shared pins problem

    Hello, I'm working on a synth using a T3.6 and the audio board. It works great and sounds fantastic (I might show it off soon). I've added an SPI display (one of these) and I tried connecting it,...
  33. Hello, this is probably of no use to you but the...

    Hello, this is probably of no use to you but the Boss GP-10 is not MIDI Class compliant:

    https://www.soundonsound.com/reviews/boss-gp-10
  34. Replies
    8
    Views
    997

    I stress I've not tried it for the modulated...

    I stress I've not tried it for the modulated waveform yet (I will do later as I'm planning to implement oscillator hard sync), but it looks like setting phase_accumulator to zero will work here as...
  35. Replies
    8
    Views
    997

    Hello, no waveformMod1.phaseModulation(0); just...

    Hello, no waveformMod1.phaseModulation(0); just sets the phase modulation range. You need to set the phase_accumulator to zero in synth_waveform.cpp. I added this:

    In synth_waveform.h:

    void...
  36. Replies
    0
    Views
    231

    Synth envelope generator implementation

    Hello, my synth's coming on well. I'm getting the modulation options sorted out. I want to modulate the filter cutoff with an envelope and LFO. The envelope object in the audio library alters an...
  37. Replies
    2
    Views
    297

    Many thanks for everything Paul! I should...

    Many thanks for everything Paul!

    I should mention for anyone wanting to implement sync, the above method produces a form of 'soft sync' (I think - read this for more explanation as I'm just...
  38. Replies
    2
    Views
    297

    Waveform sync question

    Hello, I'm creating a synth and am considering how to implement oscillator sync.
    Are the waveforms already in sync (start from zero amplitude) when the frequency is set for a new note?
    Would I...
Results 1 to 38 of 38