Search results

  1. A

    Larger capacitor for low frequency ADC with Teensy Audio Board?

    this is the code of creating saw tooth wave by sum of sine wave #include <Bounce.h> #include <Audio.h> #include <Wire.h> #include <SPI.h> #include <SerialFlash.h> #include "Arduino.h" #include "arm_math.h" // GUItool: begin automatically generated code AudioSynthWaveform sine1...
  2. A

    Larger capacitor for low frequency ADC with Teensy Audio Board?

    Dear all, I successfully created the low frequency sawtooth wave, which is 0.5 Hz, the results is really good, however, I tried to record it by the recorder example, I found out the AC coupling in the Audio Board filtered out the low freq part. Which result as below: I have to choose two...
  3. A

    Userblock data array in AudioPLayQueue and AudioRecordQueue difference?

    This is the full program I wrote and I cant hear anything. Look like there is somthing wrong with playQueue. However, I tried directly sent to i2s1 from SDWav and heard my song playing. #include <Audio.h> #include <Wire.h> #include <SPI.h> #include <SD.h> #include <SerialFlash.h> // GUItool...
  4. A

    Userblock data array in AudioPLayQueue and AudioRecordQueue difference?

    Hi everyone, I want to used AudioPlayQueue and play the sound from AudioRecordQueue. When looking to the .cpp file, I found the different userblock queue size, I have an question to ask that will this different make the block transmission mismatch? and how much memory is enough in case I want to...
  5. A

    Teensy 3.2 + Audio Adaptor : infrasonic posible ( 1-2Hz)?

    Hi Paul, thank you for all your work for this example and that was an awesome post. You are my idol. Based on the result above, the target of creating low freq signal is possible. I think I will stick with increasing capacitor size to match my desired high pass frequency ( which is much...
  6. A

    Teensy 3.2 + Audio Adaptor : infrasonic posible ( 1-2Hz)?

    Dear all, I have a project which based on Teensy 3.2 and the Audio Board. Mainly this project is used to create a waveform analogue signal that has 1 Hz frequency. The waveform can be square or sawtooth. I have seen the tutorial code and the video, it can produce audible sound, which I dont...
Back
Top