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  • Pio's Avatar
    02-27-2021, 01:01 PM
    L+ and L- is the left differential input. Connect it this way: L- -> GND L+ -> Teensy Line out L R- -> GND R+ -> Teensy Line out R
    9 replies | 105 view(s)
  • Pio's Avatar
    02-22-2021, 06:11 PM
    Coded something new during last weekend, another classic effect which sounds great with many instruments: 12 stage mono phaser with internal (built in) LFO or an external modulation input Link to code:...
    1 replies | 104 view(s)
  • Pio's Avatar
    02-17-2021, 02:45 PM
    Thanks for the explanation Paul. I have fixed the code using the __disable/__enable macros. Also changed all the float constants to use "f" postfix to ensure they are single precision floats. And there is a new...
    19 replies | 1115 view(s)
  • Pio's Avatar
    02-17-2021, 12:12 PM
    I might be wrong with my assumptions, but the thinking behind this was: __disable_irq() disables all interrupts, everything including USB, timers etc. AudioNoInterrupts(); disables the software interrupt only, where...
    19 replies | 1115 view(s)
  • Pio's Avatar
    01-31-2021, 02:18 PM
    Could be one of the reasons: if you are using the Teensy4.0 without the usb cable plugged in make sure there is no while(!Serial); in your setup function, right after the Serial.begin(); Use a delay of few hundreds...
    25 replies | 700 view(s)
  • Pio's Avatar
    01-26-2021, 09:35 AM
    I'd leave the attn as it is. It is used to attenuate the input signal depending on the reverb time, creates more attenuation for long reverb tail to avoid clipping. The n calculation looks fine. However, for shorter...
    19 replies | 1115 view(s)
  • Pio's Avatar
    01-25-2021, 06:55 PM
    M4ngu make sure both of the files, effect_platervbstereo.h and effect_platervbstereo.cpp are in the same directory as your main file. And of course, there header is included properly: #include "Audio.h" #include...
    19 replies | 1115 view(s)
  • Pio's Avatar
    01-04-2021, 04:57 PM
    What i usually do for clean pot readings is: 1. Proper supply decoupling. All pots and AVREF are decoupled with an LC filter 10uH + 1u. 2. 100n filter caps placed close to the analog inputs for each pot wiper. 3....
    11 replies | 355 view(s)
  • Pio's Avatar
    01-04-2021, 08:23 AM
    The difference between the hidamp and lowpass is: - hidamp is a lowpass filter placed inside the reverb tank, causing an increasing treble loss as the reverb tail fades out, - lowpass is a static filter applied at the...
    19 replies | 1115 view(s)
  • Pio's Avatar
    01-02-2021, 07:17 PM
    Jay, that's a nice sample, thanks for posting. I noticed i should maybe reverse the "lowpass" operation. Right now the parameter controls the cutoff frequency, so lower settings give more darker sound. Which is...
    19 replies | 1115 view(s)
  • Pio's Avatar
    12-31-2020, 03:08 PM
    Pio replied to a thread freeverb noise ? in Audio Projects
    Posted a new thread about the reverb: https://forum.pjrc.com/threads/65688-Stereo-Plate-Reverb-for-Teensy4-x
    13 replies | 536 view(s)
  • Pio's Avatar
    12-31-2020, 03:07 PM
    Here is something i have been working recently and already used it in a few projects: a new implementation of a plate type reverb sound for Teensy4.X. It's an allpass based reverb using two LFOs to modulate the delay...
    19 replies | 1115 view(s)
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Cannot get Teensy Audio shield line out to produce sound 02-27-2021 01:01 PM
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