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  1. Hi @aidyw, thanks for your optimizations for...

    Hi @aidyw,

    thanks for your optimizations for freeverb! I tried to use your code including your changes as a replacement for freeverb on a T_3.6. It seems to work but I am getting strange sound...
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    EPiano audio object for Teensy

    Hi,

    i used the free VST EPiano from MDA some time ago and ported it to the Teensy(-3.6) (see MicroMDAEPiano). Now I have converted the engine into a Teensy audio object, so that you can include...
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    Hi, for me it works with Linux (PC), so why...

    Hi,

    for me it works with Linux (PC), so why not with a Raspi?

    Regards, Holger
  4. I added a simple test sketch available at...

    I added a simple test sketch available at https://codeberg.org/dcoredump/EQTest. All you need is a Teensy audio shield. Perhaps someone can help with this...
  5. Question about SGTL5000 and using the parametric EQ (calcBiquad() and eqFilter())

    Hi,

    I am trying to use the EQ from the SGTL5000 audio shield as a 7-band parametric eq. But I have trouble with the eqFilter() function (or calcBiquad()). calcBiquad() seems to have not much...
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    Hi @JayShoe, thanks a lot! I managed to fix...

    Hi @JayShoe,

    thanks a lot!

    I managed to fix several problems. I also added two simple examples for the library and a Python script which converts SYSEX banks to a header file. Now you can...
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    New audio synth object: Synth_Dexed

    Hi,

    I've been working on the port of the Dexed sound engine (6 OP-FM synth) for a while now (see https://www.parasitstudio.de and...
  8. There are mainly classes. But it seems that there...

    There are mainly classes. But it seems that there are nearly no conflicting function names if not class based.

    I found a way by using https://github.com/dwd31415/single-c-file for the headers and...
  9. The handling for me would be easier (in Arduino...

    The handling for me would be easier (in Arduino IDE) - not so much files.

    But the main reason is that I can use it like a Teensy-Audio-Library object (e.g. as synth_dexed()). So others can use...
  10. How to generate single C++ header and code files from several files

    Hi,

    sorry, this is more of a general C++ topic, but my question is aimed at a Teensy project. So I hope it's ok if I ask the question here.

    I am developing MicroDexed, a 6 OP FM synth...
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    Another one: it's MicroDexed (DX7 FM synthesis)...

    Another one: it's MicroDexed (DX7 FM synthesis) for a Eurorack:

    https://m.youtube.com/watch?v=JrZnEHhoTDk

    https://codeberg.org/nervousapps/MicroDexed/src/branch/nervoussupermother
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    https://codeberg.org/dcoredump/MicroDexed This...

    https://codeberg.org/dcoredump/MicroDexed

    This is a 6-OP-FM synth for the Teensy, compatible with a famous japanese synth from the 80's ;-)
  13. Thanks, it works fine with my patched Adapter: ...

    Thanks, it works fine with my patched Adapter:

    22394

    More questions:
    - Do I need this resistor also for Rev C boards? is it problematic if the resistor is also used for Rev C?
    - Can/should I...
  14. Thanks, Paul. So I will try to add one to my...

    Thanks, Paul. So I will try to add one to my adapter board.
  15. Problem with adapter for using a Rev. B audio shiel with a T_4.1 (for MicroDexed)

    Hi,

    I made an adapter board for using a T_4.1 as a replacement for the T_3.6 on my TMA boards. This adapter maps the used pins to new destinations - especially the I2S pins.

    Everything works...
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    TeensyMIDIAudio is currently nothing more than a...

    TeensyMIDIAudio is currently nothing more than a breakout board with no intelligence, so I think this is not a big deal.
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    It should be possible to adapt this to the...

    It should be possible to adapt this to the TeensyMIDIAudio board as soon as there are the T_4.1 adapter kits ready.

    Regards, Holger
  18. Hi ETMoody3, Try to change the "Velocity...

    Hi ETMoody3,



    Try to change the "Velocity Level" (page 18 in the manual). The "original" sound is when using the value "100".



    There are several more SYSEX sound files flying around on...
  19. Sorry that there is no video demo yet. I had once...

    Sorry that there is no video demo yet. I had once run a MIDI file through the MicroDexed and the MicroMDAEPiano on soundcloud (Drums from RZ-Drummer), no additional external mastering or FX).
    ...
  20. Hi @ETMoody3, Ahhh, nice case!!! Thanks...

    Hi @ETMoody3,



    Ahhh, nice case!!! Thanks for showing!

    Regards, Holger
  21. Hmmm, strange. I created a new version with...

    Hmmm, strange. I created a new version with slightly changed paramters for the drill file. As I wrote: it worked with Rev-1.8 at PCBWAY and REv-1.8 at PCBGO. You can try to use the new files from...
  22. Nice! Thanks for testing. Regards, Holger

    Nice! Thanks for testing.

    Regards, Holger
  23. I havn't tested the code with T_4.x. Have you...

    I havn't tested the code with T_4.x. Have you compiled with "Serial + MIDI + Audio"?

    Can you tell me which example code you used?
  24. I can take a look at this when I am back at home...

    I can take a look at this when I am back at home (next week). I made those PCBs at PCBGO a year ago, so I think everything should be fine.

    Regards, Holger
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    Hi Mark, that's really cool! But I can't try...

    Hi Mark,

    that's really cool! But I can't try because I currently have no T_4.x setup running. Using it on MicroDexed (on a T_3.6) would be probably reduce the polyphony to 1. I hope I can get my...
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    Hi Mark, Thanks for investigating this...

    Hi Mark,

    Thanks for investigating this problem. The pictures say a lot. Can you give me an information where I can read how to use sinc()-method for this? This approach is exciting.



    I used...
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    Thanks for sharing! I made something similar...

    Thanks for sharing! I made something similar nearly a year ago. I needed a chorus effect, so I wrote my own modulated delay line.

    Input 0 is the original signal, Input 1 it the modulation signal...
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    Ok, thanks! I think I have to try also until...

    Ok, thanks! I think I have to try also until finding working setup. Yes, there is also much memory used outside the audio stack. But this memory is mainly staticly allocated. I think I have to try...
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    Hi Paul, thanks for your answer! Ok -...

    Hi Paul,

    thanks for your answer!



    Ok - good to know. My current problem: I am getting strange sounds when using higher values with the delay. And after reducing the delay time the problems...
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    Delay object and memory usage

    Hi!

    I have a questions about the memory consumption of the delay object:

    if I use only one tap with delay1.delay(); and use a relatively high value as delay time and then set it lower, will...
  31. Hi Paul, Thanks for the link to the...

    Hi Paul,



    Thanks for the link to the different compression variants. Looks interesting. Perhaps this can help to write such an effect. I scanned the forum for already existing code and found...
  32. Hi Richard, That sounds very interesting....

    Hi Richard,



    That sounds very interesting. I'd like to try that. I have already built some "effects" in the design of the audio library (chorus, mono-stereo-panning, stereo-mono). Would you...
  33. I have found out that I am probably beoeating a...

    I have found out that I am probably beoeating a compressor in some way. It's a pity that there is no finished object in the audio library for this yet.

    Thanks, Holger
  34. SGTL5000: Does setting lineOutLevel() influence the output signal level?

    Hi @ll,

    I have the problem that my audio code currently produces a low-level signal. Yes: I can try to multiply the signal before sending out. But how about the lineOutLevel()-method for the...
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    [solved]

    Ok, I solved my problem: The changed buffer sizes seemed to be ok, but I used the wrong program for uploading the data. If I use


    amidi -p hw:2,0,0 -s addon/SD/90/RitCh1.syx

    it seems to work....
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    MIDI SYSEX buffer too small (USB-MIDI)

    Hi!

    I am writing some MIDI SYSEX code for https://www.parasitstudio.de/projects/microdexed/ and tried to implement a MIDI bank upload. Such a DX7 bank consists of 32 voices and together a SYSEX...
  37. Many thanks! I will take a close look at the...

    Many thanks! I will take a close look at the schematics and start to build my own when I have restored my KiCAD environment.

    Regards, Holger
  38. Yes, I have a TGA Pro and I have some adapter...

    Yes, I have a TGA Pro and I have some adapter boards. They are working for the TGA but not for my project because I need some more routed pins for the encoders which your board doen't have. I think I...
  39. Ok, thanks for this information. Hmmmm, my PCB is...

    Ok, thanks for this information. Hmmmm, my PCB is designed for using the Rev C boards, so the only way seems to build an adapter (and hope that I won't get those signaling problems).

    Thanks, Holger
  40. Ok, it seems to be pin compatible to the T_4.0...

    Ok, it seems to be pin compatible to the T_4.0 (for the pins which match the footprint).

    Thanks, Holger
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    Thanks @Paul (fixed minutes before 1.52 :))

    Thanks @Paul (fixed minutes before 1.52 :))
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    Hi! FYI: I tried 1.52#6 on Linux (Kubuntu...

    Hi!

    FYI:

    I tried 1.52#6 on Linux (Kubuntu 20.04) and Arduino-1.8.12: Installation ok.

    When I am trying to install my MicroDexed-project (which uses USBHost_t36.h) for Teensy-4.1, I am...
  43. Teensy-4.1 and Teensy audio shield (on MicroDexed)

    Hi @ll,

    I got the new T_4.1 and tried an inline replacement inside for my MicroDeded. I am using the Rev B/C audio shields from Teensy. It seems that T_4.1 is not compatible with them. Can anyone...
  44. Ahhhh! I thought I am getting a pin number when...

    Ahhhh! I thought I am getting a pin number when using BUILTIN_SDCARD and havn't checked this before. Many thanks!!!!

    Regards, Holger
  45. Check for SD card on t_3.6 or audio-shield

    Hello,

    I have a little problem with my T_3.6 + audio-shield: I want to check if a sd-card is placed into the T_3.6 and, if not, than try to check if there is one installed on the audio-shield. But...
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    We changed the handling of the audio queue, so...

    We changed the handling of the audio queue, so this is perhaps not necessary anymore.



    I currently have no T_4.0 running. I fact I got some T_4.0 yesterday, but I havn't time to test -p erhaps...
  47. Many thanks!!! This is a very cool testing tool...

    Many thanks!!! This is a very cool testing tool and it works with wine on Linux and MicroDexed connected via USB! :-)

    Is there a way to change the controller numbers of the pots?

    Regards, Holger
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    Thanks for showing! The "dev" branch supports...

    Thanks for showing! The "dev" branch supports already T_4.0. But it will take some time to finish all the changes for the new version (including dual/split mode for the T_4.0).

    Regards, Holger
  49. Great! 64 note are 4 times a DX7 :-) Currently I...

    Great! 64 note are 4 times a DX7 :-)
    Currently I am writing the code for multi instances, so when it's ready it may be possible to run 4 different voices at a time :-)



    Currently I have some...
  50. Hey, that's pretty cool! Thanks for testing. ...

    Hey, that's pretty cool! Thanks for testing.

    The noise can be buffer underrun or (what I think) overload (too loud). This is shown as XRUN or PEAK counter every 5 seconds on the serial console....
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