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  1. Replies
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    Hi Richard Had a quick go with the FIR version...

    Hi Richard

    Had a quick go with the FIR version (your 1.5 + 36 taps). I couldn't get to to run initially which I now know is because I was running with a smaller than standard AUDIO_BLOCK_SAMPLES....
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    Richard - no, interpolating version is fine. I...

    Richard - no, interpolating version is fine.
    I don't understand the maths well enough on the latest (FIR LPF) to understand what latency would be.
    I'm interested in the filter for and effect unit...
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    @rvh - is there a useable version of the code...

    @rvh - is there a useable version of the code that I could try. I'd like to get a idea of latency and also to try with small block sizes. cheers Paul
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    @PaulStoffregen, spent a little time with the new...

    @PaulStoffregen, spent a little time with the new code on git, it sounded different, after a bit of testing it appears the code you've loaded on git for v1.4 is different to the code at #129 in a...
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    Hi Richard, yes passband_gain =0. I'll put a...

    Hi Richard, yes passband_gain =0. I'll put a couple of pots on input_drive and passband_gain and have a play with that. Cheers Paul
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    Nothing musical or scientific but a quick video...

    Nothing musical or scientific but a quick video of the code from #103.

    A little Moog Werkstatt with a simple saw wave through the Moog filter and through the teensy at various levels of resonance....
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    Hi Richard I had a quick try of your code from...

    Hi Richard

    I had a quick try of your code from #85 - sounds really nice. Certainly the closest I've heard to that moog sound on a teensy - thanks for the work on this I've been looking for a...
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    Paul/Richard - looks like great progress, can't...

    Paul/Richard - looks like great progress, can't wait to give it a try at the weekend and will be sure to give some feedback, cheers Paul
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    Hi Richard - I didn't realise that you were...

    Hi Richard
    - I didn't realise that you were modulating the cutoff - makes sense now
    - Easy audition - just in case you missed the intent of the files on GitHub - it is set up so that you change the...
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    hi @rvh when I was looking at this I thought...

    hi @rvh

    when I was looking at this I thought the AnttiHuovilainen was the most promising - I'm not sure I follow what you're doing with the coefficient code, i can't see what would change sample...
  11. hi try something like: // if...

    hi

    try something like:



    // if pot_raw_value is an int holding the value of the pot 0-1023
    //

    float pot_value = floor(pot_raw_value/102.3f)/10.0f;
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    - sounds great!! Repeats in the feedback - I...

    - sounds great!!

    Repeats in the feedback
    - I need to do a bit more with that
    - When you say 'simply pass it through' would you want it straight through or would you want it delayed (again)? if...
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    Hi, track shows up as 'This track was not found....

    Hi, track shows up as 'This track was not found. Maybe it has been removed ' - is it maybe set to private?
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    Hi, good you got it up and running - I'm using it...

    Hi, good you got it up and running - I'm using it as part of a vintage reverb project that i'm playing with.



    Need to think about that.....Not entirely sure I understand but if there is a...
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    hi @lucian_dusk I've stripped out and added...

    hi @lucian_dusk

    I've stripped out and added lots of comments as below - if anything doesn't make sense let me know.

    I've included an example that is expecting an audio input through line in and...
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    hi @lucian_dusk I think we've both been trying...

    hi @lucian_dusk

    I think we've both been trying to do the same thing....

    The tapeDelay10tap object that you're using changes from one delay time to another by fading between two different taps....
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    The one on the left (in the schematic) is the one...

    The one on the left (in the schematic) is the one at the (short) end of the teensy and I donít have that connected to the board - Im not aware of any difference between them

    Cheers Paul

    PS...
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    Hi, The number at the pin in red (pin31) are...

    Hi,

    The number at the pin in red (pin31) are just the way that symbol is annotated in the schematic, I used the usual 3V3 pin (the Teensy pin names/numbers are in the green text).

    The...
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    Hi dim3740, I don't have and iTrack but looking...

    Hi dim3740, I don't have and iTrack but looking at their website it is expecting a class compliant device so should be fine with teensy acting as a midi device.

    It doesn't support usb hubs so you...
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    Hi I've also heard it depends on your brand /...

    Hi
    I've also heard it depends on your brand / batch of WS281Bs but I've never had any issues. I had a Teensy 4 board with 8 (not 16) but not problems.
    I didn't put a cap on each one either and...
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    Hi Sandro, that looks like an interesting...

    Hi Sandro, that looks like an interesting project. update is getting called every 128 samples (128@44.1k=2.9ms) you can change the number of samples in a block from 128 to say 16 or 32 or 64 and the...
  22. hi I just had a quick look at your sketch,...

    hi

    I just had a quick look at your sketch, think it will need more memory allocated - try increasing the AudioMemory()

    Have a look here at AudioMemoryUsageMax() which you can use to print out...
  23. hi unawoo, 6 pots and 9 buttons sounds good - you...

    hi unawoo, 6 pots and 9 buttons sounds good - you can do a lot with that, have fun :) cheers, Paul
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    O&C is a great idea for the cv hardware, the code...

    O&C is a great idea for the cv hardware, the code base is quite complex (highly optimised) - i've never looked at how easy it is to add an app.

    If it was me I'd start with one channel, use...
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    Hi Tardishead, I found this tutorial on...

    Hi Tardishead,

    I found this tutorial on circular buffers and delays useful, it isn't for the teensy platform (it's for bela) but the principals apply. It might help with streaming incoming signals...
  26. hi @bigtony, I'd try moving the pins, try s0...

    hi @bigtony,

    I'd try moving the pins, try
    s0 - 10
    s1 -11
    s2 -12
    s3 - 16

    If that doesn't work can you take a picture of your actual wiring and post that cheers, Paul
  27. Hi, I had a hack at a set of files for you to...

    Hi, I had a hack at a set of files for you to work on. They will do a basic reverser like your Nootropic link in post #1.

    The example is set up to take audio through line in but you should be...
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    Sounds and looks great, are you using some of the...

    Sounds and looks great, are you using some of the Shruthi codebase or are you using the audio lib? Cheers, Paul
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    Hi @nishant, I think you're trying to see what's...

    Hi @nishant, I think you're trying to see what's going on inside your custom effect to the actual samples?

    Like Pete says, you are overloading the buffer sending data to it too quickly.

    I've...
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    Hi @nishant, looking again at your codes you seem...

    Hi @nishant, looking again at your codes you seem to be modifying AudioEncoder but you main sketch is calling up a different class - AudioEffectRectifier - is that the problem cheers Paul
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    Hi @nishant, can you try commenting out or...

    Hi @nishant, can you try commenting out or removing your second Serial.print - it will still be flooding serial with 44000 prints a second cheer paul
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    Hi @nishant Like Pete says, you are going to...

    Hi @nishant

    Like Pete says, you are going to get a lot of data to serial - it may be overloading it ?

    I usually put a counter in the update loop to dump out 1 in x blocks or 1 in x samples to...
  33. Thanks for that !

    Thanks for that !
  34. hi @dirkenstein, I'd be interested in trying a FP...

    hi @dirkenstein, I'd be interested in trying a FP version if you are interested in/able to share, cheers, Paul
  35. Hi Ben, can you through up an example of the...

    Hi Ben, can you through up an example of the sketch and samples that you're using and I'll have a go. cheers, Paul
  36. hi @bigtony - your attachment in #18 above...

    hi @bigtony - your attachment in #18 above doesn't work, could you re-post it. also could you post the code you're using to read the pots

    cheers Paul
  37. Hi Ken, really nice work and sounds great!

    Hi Ken, really nice work and sounds great!
  38. Hi ETMoody3 I've pasted below: - example file...

    Hi ETMoody3

    I've pasted below:
    - example file (just like the first one in this post that changes a few taps over and over)
    - effect_tapedelay10tap.h which is the header file for the effect...
  39. Thanks again MarkT for the ideas, I made a new...

    Thanks again MarkT for the ideas, I made a new delay object to get round the clicks and pops when you change delay times dynamically.
    It seems to work well letting me adjust multiple taps. It's not...
  40. Hi Mark, I thought that might the be the...

    Hi Mark,

    I thought that might the be the expected behaviour, thanks for confirming and your suggestion - I'll have a go at your second suggestion (cross fading two sets of taps)

    cheers, Paul
  41. Audio Effect Delay Pops & Clicks when changing tap times

    Hi

    I'm using the AudioEffectDelay with a Teensy4 and AudioBoard.

    When I change tap times I get pops and clicks. I'm changing a few tap time together (like changing between different presets if...
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    what is it doing? do you need some feedback on...

    what is it doing? do you need some feedback on the delay?

    cheers Paul
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    I've only ever done it with trial and error and...

    I've only ever done it with trial and error and keeping an eye on AudioMemoryUsage(). The various objects use blocks up differently which I'm sure you know, delay uses blocks up quickly (obviously)...
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    Hi Holger memory consumption is decreased...

    Hi Holger



    memory consumption is decreased if you reduce the largest tap duration



    You need to allocate memory with AudioMemory based on a number of blocks of samples. The default is 1...
  45. Hi Reiner, Your wiring looks ok. The pot...

    Hi Reiner,

    Your wiring looks ok.

    The pot will be expecting to turn about 270 degree to get the full range, from the picture I don't think that mechanism will be able to turn the full range so...
  46. hi Reiner, You should aim to get the full...

    hi Reiner,

    You should aim to get the full range from 0 - 1023, are there any resistors in series with the pots?

    could you post a picture to get an idea of what you're dealing with

    cheers...
  47. hi reibuehl you should wire one end to 3.3V...

    hi reibuehl

    you should wire one end to 3.3V the other end to gnd and the middle pin (the wiper) to one of the Analog input pins.

    do you know what value the pots are?

    if you find the input...
  48. hi cfredisded in your example code, it updates...

    hi cfredisded

    in your example code, it updates the delay time every time you go around the loop - for the T4 this will be really fast (lots of time per sample?).

    if you are just looking to...
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    hi cyclpsrock this thread doesn't answer your...

    hi cyclpsrock

    this thread doesn't answer your specific question but talks about the same issue and points to a shaped envelope object by @a_guy_called_tom...
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    Hi Fluxanode, depends on the library, lots of...

    Hi Fluxanode, depends on the library, lots of them do work without change - what library are you wanting to use?

    Cheers, Paul
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