teensy sample flashloader

Correador de flash de muestra adolescente

Cargar .RAW Muestras de audio de la tarjeta micro-SD al psram externo o la memoria flash en Teensy 4.1

NB : Esta biblioteca actualmente solo funciona con archivos de audio .RAW : los archivos .WAV no son compatibles.

• Use Audacity para convertir sus muestras de audio en formato .RAW ( 16 bits/sample , 44100 samples/sec , signed integer samples ).
• El método playWav no funciona. Solo PlayRaw actualmente funciona.
• Puede jugar un archivo .WAV usando playRaw(...) pero el encabezado WAV de 44 bytes producirá un pequeño fragmento de ruido al mendigar de la muestra ...

# include < Arduino.h >
# include < SD.h >
# include < Audio.h >
# include < TeensyVariablePlayback.h >
# include " flashloader.h "

// GUItool: begin automatically generated code
AudioPlayArrayResmp      rraw_a1;        // xy=321,513
AudioOutputI2S           i2s1;           // xy=675,518
AudioConnection          patchCord1 (rraw_a1, 0 , i2s1, 0 );
AudioConnection          patchCord2 (rraw_a1, 0 , i2s1, 1 );
AudioControlSGTL5000     sgtl5000_1;     // xy=521,588
// GUItool: end automatically generated code

unsigned long lastSamplePlayed = 0 ;
newdigate::audiosample *sample;

void setup () {
    Serial. begin ( 9600 );
    AudioMemory ( 20 );
    sgtl5000_1. enable ();
    sgtl5000_1. volume ( 0 . 5f , 0 . 5f );
    
    rraw_a1. enableInterpolation ( true );

    Serial. print ( " Initializing SD card... " );
    while (!SD. begin (BUILTIN_SDCARD)) {
      Serial. println ( " initialization failed! " );
      delay ( 1000 );
    }
    Serial. println ( " initialization done. " );

    newdigate::flashloader loader;
    sample = loader. loadSample ( " KICK.RAW " );
}

const int numChannels = 1 ; // 1 for mono, 2 for stereo...

void loop () {
    unsigned currentMillis = millis ();
    if (currentMillis > lastSamplePlayed + 500 ) {
        if (!rraw_a1. isPlaying ()) {
            rraw_a1. playRaw (sample-> sampledata , sample-> samplesize / 2 , numChannels);
            lastSamplePlayed = currentMillis;

            Serial. print ( " Memory: " );
            Serial. print ( AudioMemoryUsage ());
            Serial. print ( " , " );
            Serial. print ( AudioMemoryUsageMax ());
            Serial. println ();
        }
    }
    delay ( 10 );
}