Forum Rule: Always post complete source code & details to reproduce any issue!

Search:

Type: Posts; User: houtson

Page 1 of 4 1 2 3 4

Search: Search took 0.00 seconds.

  1. Replies
    7
    Views
    194

    Hi, i think it's operating as intended,...

    Hi,

    i think it's operating as intended, certainly the way I thought it operated i.e. once you have set a stage that is it set until you change it and the stage is independent of others.

    I've...
  2. Replies
    0
    Views
    71

    Sampler Rate Reducer Effect

    I ported the sample rate reducer by Emilie Gillet from Mutable Instruments Plaits (via a port to DaisySP by Ben Sergentanis) to a stand-alone Audio Library object.

    There's a basic sample rate...
  3. Replies
    12
    Views
    273

    thanks - void arm_q15_to_float (const q15_t *...

    thanks - void arm_q15_to_float (const q15_t * pSrc, float32_t * pDst, uint32_t blockSize )
  4. Replies
    12
    Views
    273

    Thanks I'll try that Is there and arm_...

    Thanks I'll try that

    Is there and arm_ function to convert a block of int16_t to float?

    I should have said above I'm using a teensy 4, cheers Paul
  5. Replies
    12
    Views
    273

    The tone attenuation is on the feedback leg of an...

    The tone attenuation is on the feedback leg of an old reverb effect that I don't own so difficult to isolate.

    I have the a schematic of it so believe it is as spec'd above, cheers Paul.
  6. Replies
    12
    Views
    273

    Quick bit of feedback to say I got that working -...

    Quick bit of feedback to say I got that working - thanks for the pointers @Blackaddr and @WMXZ.

    I'm a complete noob at filter design so I'll capture a few notes here for anyone else coming behind...
  7. Replies
    9
    Views
    247

    Maxim do a range of digipots that you can use for...

    Maxim do a range of digipots that you can use for this. Also Microchip MCP42050 is popular.

    Discussion on subject in another forum might be of interest.......
  8. Sounds fantastic, well done, I bet it's been a...

    Sounds fantastic, well done, I bet it's been a labour of love and a whole lot of effort.
    Industrial design looks great also with the case and the buttons (is that an injection moulded case?), I...
  9. Replies
    12
    Views
    273

    Thanks, came across this...

    Thanks, came across this http://users.sussex.ac.uk/~tafj0/DSP_IIR.html which looks handy

    Cheers Paul
  10. Replies
    12
    Views
    273

    Hi, thanks for the pointers The issue with...

    Hi, thanks for the pointers


    The issue with the library one is the noted issue with low corner freq (<400Hz).

    I'll have a look at the CMSIS-DSP, I'm assuming I'd need to wrap that in a new...
  11. Replies
    25
    Views
    614

    sounds good, let us known how you get on , cheers...

    sounds good, let us known how you get on , cheers Paul
  12. Replies
    25
    Views
    614

    I'd recommend trying a bigger step size. ...

    I'd recommend trying a bigger step size.

    0.0001 is 10,000 steps and well beyond what you will be able to accurately measure on a pot (and I think what you will be able to hear).
    Midi CC moves...
  13. Replies
    25
    Views
    614

    Hi, You can change AUDIO_BLOCK_SAMPLES (which...

    Hi,

    You can change AUDIO_BLOCK_SAMPLES (which sets the block size (default is 128 samples, it is set in AudioStream.h).

    I generally use 16 which updates every 0.3ms.

    I still think you are...
  14. Replies
    12
    Views
    273

    Help with filter design

    I'm looking to emulate a tone control in a part of an audio effect. Trying to achieve specific low frequency and high frequency attenuation.

    The spec's I'm trying to achieve are 6db/octave...
  15. Replies
    25
    Views
    614

    Hi, your code is updating the object every cycle...

    Hi, your code is updating the object every cycle of the loop - on a teensy 4 this will be very often, if you update it less often does the problem go away? cheers Paul
  16. Hi Jeremiah, I'll give a few basic answers and...

    Hi Jeremiah,

    I'll give a few basic answers and maybe one of the experts can fill in the details.


    This code uses a wavetable (AudioWaveformSine). Is this absolutely necessary to achieve...
  17. Replies
    2
    Views
    221

    Hi, They are samples of (in this case)...

    Hi,

    They are samples of (in this case) different acoustic guitars.

    24461
    you'll find more details at the adventurekid website.

    cheers, Paul
  18. hi h4yn0nnym0u5e, This old thread ...

    hi h4yn0nnym0u5e, This old thread talks about dynamic connections, might be useful ? cheers, Paul
  19. Replies
    7
    Views
    301

    Hi, I didn't review in detail so may not have...

    Hi,

    I didn't review in detail so may not have understood the problem but it looks like you are using pins reserved for the audio board for other input

    A number of pins are not shareable for...
  20. hi, looks like you are setting the volume every...

    hi,
    looks like you are setting the volume every cycle of loop (rather than every 50ms) - that must be a lot of times a second, that might be a the problem?

    try changing that, press the button on...
  21. Replies
    3
    Views
    248

    hi philip if you unplug your amplifier do you...

    hi philip

    if you unplug your amplifier do you still get distortion through the headphones?

    other than that difficult to tell without any code (have you given it enough AudioMemory?)

    cheers...
  22. Replies
    207
    Views
    9,755

    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....
  23. Replies
    207
    Views
    9,755

    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...
  24. Replies
    207
    Views
    9,755

    @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
  25. Replies
    207
    Views
    9,755

    @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...
  26. Replies
    207
    Views
    9,755

    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
  27. Replies
    207
    Views
    9,755

    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....
  28. Replies
    207
    Views
    9,755

    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...
  29. Replies
    207
    Views
    9,755

    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
  30. Replies
    207
    Views
    9,755

    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...
  31. Replies
    207
    Views
    9,755

    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...
  32. 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;
  33. Replies
    20
    Views
    2,032

    - 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...
  34. Replies
    20
    Views
    2,032

    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?
  35. Replies
    20
    Views
    2,032

    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...
  36. Replies
    20
    Views
    2,032

    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...
  37. Replies
    20
    Views
    2,032

    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....
  38. Replies
    10
    Views
    971

    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...
  39. Replies
    10
    Views
    971

    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...
  40. Replies
    3
    Views
    314

    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...
  41. Replies
    10
    Views
    971

    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...
  42. Replies
    16
    Views
    1,261

    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...
  43. 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...
  44. 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
  45. Replies
    5
    Views
    475

    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...
  46. Replies
    5
    Views
    475

    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...
  47. 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
  48. 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...
  49. Replies
    149
    Views
    16,238

    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
  50. Replies
    40
    Views
    2,357

    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...
Results 1 to 50 of 173
Page 1 of 4 1 2 3 4