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  • alex6679's Avatar
    Yesterday, 09:56 PM
    Hi, yes, there are really 20481 coefficients (32bit float). Why not? If your algorithm is e. g. not slower and doesn't need more memory, but at the same time has lower distortion, then I would replace my...
    90 replies | 7466 view(s)
  • alex6679's Avatar
    12-01-2021, 08:36 PM
    You are right, two things are happening: 1. The resampling of the signal. 2. Every 128 samples/ at each call of the update function, the number of samples in the input buffer is monitored (the 'buffered time' that you...
    90 replies | 7466 view(s)
  • alex6679's Avatar
    11-29-2021, 07:07 AM
    Thanks for sharing the result.
    90 replies | 7466 view(s)
  • alex6679's Avatar
    11-27-2021, 01:08 PM
    I could only test the algorithm with my hardware and until now nobody else posted results of some tests. So there is not much empirical data. I assumed that the results are much better than with results of your test...
    90 replies | 7466 view(s)
  • alex6679's Avatar
    11-26-2021, 08:02 PM
    Good, that you were able to fix the problem.
    90 replies | 7466 view(s)
  • alex6679's Avatar
    11-26-2021, 10:37 AM
    That does really not look good. Can you have a look at the signal on the Teensy without resampling? I only had a brief look at you code, but I think replacing the AsyncAudioInputSPDIF3 object with an AudioInputSPDIF3...
    90 replies | 7466 view(s)
  • alex6679's Avatar
    11-25-2021, 07:34 PM
    Hi, you don't need to change the sample freuqency of the library. From 48kHz to 44.1kHz is no problem. The the resampling algorithm, that I implemented, is quite simple. It is described here:...
    90 replies | 7466 view(s)
  • alex6679's Avatar
    11-23-2021, 07:57 AM
    @Bill Glass: I was also pleasantly surprised about the low distortion and I am curious about your results. Two things that you need to take into account: When the resampler is initialized, it uses the input frequency...
    90 replies | 7466 view(s)
  • alex6679's Avatar
    11-21-2021, 12:48 PM
    That's difficult to answer. Some months back, I did some tests in which I want to get a feeling about the amount of jitter of the Teensy spdif-output. I can share the results although they don't exactly answer your...
    90 replies | 7466 view(s)
  • alex6679's Avatar
    11-20-2021, 12:41 PM
    Hi, I don't know/own an audio board, but I can tell you how I interface the Teensy with an optical cable. I use this optical receiver: https://www.cliffuk.co.uk/products/optical/FCR684205R.pdf On the last page there...
    90 replies | 7466 view(s)
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Teensy 4 SPDIF input + ASRC Yesterday 09:56 PM
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