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  • alex6679's Avatar
    Yesterday, 08:13 PM
    I am glad that it is working, but I am still wondering about that high latency in combination with dithering/noise-shaping. Is your setup quite performance demanding? Did you have a look at the processor usage? Are you...
    37 replies | 1180 view(s)
  • alex6679's Avatar
    06-03-2020, 07:44 PM
    Ok, I made now some changes at the asynchronous input. It is now also a friend class of the AudioOutputSPDIF3 and uses (as the other spdif input) also config_spdif3() of the output class to configure the spdif input. I...
    37 replies | 1180 view(s)
  • alex6679's Avatar
    06-03-2020, 09:11 AM
    As far as I know, it's better to first initialize the input object, so that they are updated first during the audio processing. If the outputs are initialized first, some additional latency is introduced. But I am not...
    37 replies | 1180 view(s)
  • alex6679's Avatar
    06-03-2020, 08:56 AM
    The main problem that caused the crash is a bug in the async spdif input. The spdif receiver is configured after the dma transfer is already started, but the receiver should be configured first. I can't remember at...
    37 replies | 1180 view(s)
  • alex6679's Avatar
    06-02-2020, 08:09 PM
    Hi, regarding the AsyncAudioInputSPDIF3: If you post a minimalistic example that crashes here: https://forum.pjrc.com/threads/58539-Teensy-4-SPDIF-input-ASRC, I will try to reproduce it. Maybe I am able to find out what...
    7 replies | 164 view(s)
  • alex6679's Avatar
    05-31-2020, 05:48 PM
    Ah, ok. I think I understand. I also think that only using the Teensy is probably the simplest solution. The funny thing is, I think that I use a setup that is very similar to the one you first planned: I use 4 Teensys....
    37 replies | 1180 view(s)
  • alex6679's Avatar
    05-31-2020, 10:26 AM
    I think I don't completely understand what your task is. You want to use the Teensy as a slave? Does that mean that you want to use the spdif input signal to clock the audio pipeline? One feature of asynchron resampling...
    37 replies | 1180 view(s)
  • alex6679's Avatar
    05-01-2020, 07:19 PM
    Actually, I just remembered, that I used setup described above only for testing. Since everything is working, I integrated it into my diy surround processor. Here I am using the spdif input switch which is described...
    37 replies | 1180 view(s)
  • alex6679's Avatar
    05-01-2020, 05:54 PM
    Hi, you probably already found out how to connect a rca input, but for the sake of completeness: I use RCA. I implemented a kind of a standard spdif input circuit with a dual line inverter for level shifting and a pulse...
    37 replies | 1180 view(s)
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Teensy 4 SPDIF input + ASRC Yesterday 08:13 PM
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