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Port FDS to more accurate emulation #24

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10 tasks done
nyanpasu64 opened this issue Jan 26, 2021 · 1 comment
Closed
10 tasks done

Port FDS to more accurate emulation #24

nyanpasu64 opened this issue Jan 26, 2021 · 1 comment
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Port chip emulators to external emula...

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@nyanpasu64
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nyanpasu64 commented Jan 26, 2021 •
edited

todo:

  • squash "Rename CFDS::m_Fds to m_FDS" into my earlier commits
  • get rid of std::optional to improve performance
  • check to see the two blip_buffers are creating latency or not
    • 9 samples of latency, this is bad
    • fixed: 8 samples of latency from mix_samples()
    • fixed: 1 sample of latency from read_samples()
  • implement "cycles until level change"
    • switch to mesen, the emulation there is more deterministic
    • check if mesen is accurate
      • dreadful quantization due to uint8 output, likely not hardware accurate
      • fixed
  • fix volume meters
  • fix volume mixing levels
    • when testing famitracker with nsfplay 2a03 and mesen fds ("volume comparison pulse fds.0cc"), the 2a03 vs. fds volume balance is closest when the meter is set to +1dB.
    • 10^(1/20) = 1.12201845430196343559
  • licensing: mesen is gplv3, fami is gplv2+
  • remove wall of text from CMixer
@nyanpasu64 nyanpasu64 changed the title Port FDS to nsfplay emulation Port FDS to more accurate emulation Jan 26, 2021
@nyanpasu64
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Fixed by #32.

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Port chip emulators to external emula...
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Port chip emulators to external emulators, remove CChannel
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