JacquelineG
Member
I am using the Teensy 3.2 and the audio adaptor board. I wanted to know if the Post Processor functions of the SGTL500 affect the USB audio output because I record the data in my computer from the USB and from the headphone output and the filters didn't seem to do something to the usb output. That's why I wanted to know if I need to add something else to my code or what can I do to get the filtlers work via the USB output. Also I wanted to know if there are functions like muteHeadphone() for the USB.
My code of implementation is the following:
Thank you for your help
My code of implementation is the following:
Code:
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>
AudioInputI2S audioInput; //xy=200,69
AudioOutputI2S audioOutput; //xy=365,94
AudioOutputUSB usb1;
//Connection to headphone output
AudioConnection patchCord1(audioInput, 0, audioOutput, 0);
AudioConnection patchCord2(audioInput, 0, audioOutput, 1);
//Connection to usb output
AudioConnection patchCord3(audioInput, 0, usb1, 0);
AudioConnection patchCord4(audioInput, 0, usb1, 1);
//Controller definition
AudioControlSGTL5000 sgtl5000_1; //xy=302,184
const uint32_t Q_UNIT = 524288;
const int F_S = 44100;
const int myInput = AUDIO_INPUT_LINEIN;
float vol = 0.5;
int filterParams[5];
void setup() {
// Audio connections require memory to work. For more
// detailed information, see the MemoryAndCpuUsage example
AudioMemory(12);
Serial.begin(115200);
// Enable the audio shield, select input, and enable output
sgtl5000_1.enable();
sgtl5000_1.inputSelect(myInput);
sgtl5000_1.eqSelect(1);
sgtl5000_1.audioPostProcessorEnable();
sgtl5000_1.eqFilterCount(7);
//sgtl5000_1.autoVolumeControl(2, 1, 0, -5, 0.5, 0.5);
}
void flat() {
sgtl5000_1.enhanceBassDisable();
}
void setFilter(int f_number, int type, float f_c, float dbGain, float Q) {
calcBiquad(type, f_c, dbGain, Q, Q_UNIT, F_S, filterParams);
sgtl5000_1.eqFilter(f_number, filterParams);
}
void loop() {
sgtl5000_1.volume(vol);
if (Serial.available() > 0) {
String data = Serial.readStringUntil('\n');
if (data == "filt1") {
Serial.println("FILTER 1");
myInput = AUDIO_INPUT_LINEIN;
//Select Filter Number: (0 - 6)
int filter_num = 0;
int filter1 = filter_num;
//filter type: (0 -- Low Pass, 1 -- High Pass, 2--Bandpass, 3 -- Notch, 4 -- Parametric, 5--Low Shelf, 6 -- High Shelf);
int type = 2;
//filter variables
float freq = 110;
float dbGain = 5;
float Q = 0.351;
setFilter(filter1, type, freq, dbGain, Q);
}
else if (data == "filt2") {
Serial.println("FILTER 2");
//Select Filter Number: (0 - 6)
int filter_num = 0;
int filter1 = filter_num;
//filter type: (0 -- Low Pass, 1 -- High Pass, 2--Bandpass, 3 -- Notch, 4 -- Parametric, 5--Low Shelf, 6 -- High Shelf);
int type = 2;
//filter variables
float freq = 300;
float dbGain = 5;
float Q = 0.559;
setFilter(filter1, type, freq, dbGain, Q);
}
else if (data == 'P') {
vol = 0.5;
Serial.println("Select from presets(0 -- Rock, 1 -- Classical)");
while (!Serial.available()) {}
char choice = Serial.read();
int var = (int)choice - 48;
switch (var) {
case 0:
Serial.println("Rock Equalizer");
setFilter(0, FILTER_HIPASS, 90, 2.0, 1.0);
setFilter(1, FILTER_PARAEQ, 155, 2.5, 2.0);
setFilter(2, FILTER_PARAEQ, 600, 5.0, 0.2);
setFilter(3, FILTER_PARAEQ, 1000, 4.0, 0.5);
setFilter(4, FILTER_PARAEQ, 4000, 4.6, 0.8);
setFilter(5, FILTER_NOTCH, 7000, 4.5, 0.4);
setFilter(6, FILTER_HISHELF, 10000, 4.0, 16.0);
sgtl5000_1.eqFilterCount(7);
break;
case 1:
Serial.println("Classical Equalizer");
setFilter(0, FILTER_HIPASS, 80, 4.0, 1.0);
setFilter(1, FILTER_PARAEQ, 120, 2.0, 1.0);
setFilter(2, FILTER_NOTCH, 3600, 2.5, 0.2);
setFilter(3, FILTER_PARAEQ, 3000, 7.4, 0.2);
setFilter(4, FILTER_PARAEQ, 80, 0, 1.0);
setFilter(5, FILTER_PARAEQ, 500, 0, 1.0);
setFilter(6, FILTER_PARAEQ, 9000, 2.2, 9.0);
sgtl5000_1.eqFilterCount(7);
break;
default:
Serial.println("Invalid Selection");
break;
}
}
else {
Serial.println("Comando inválido");
}
}
}Thank you for your help