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51 lines
1.2 KiB
51 lines
1.2 KiB
5 years ago
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/* Example of filtering an analog input to remove DC bias,
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using Mozzi sonification library.
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Demonstrates DCfilter(), DC-blocking filter useful for
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highlighting changes in control signals.
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The output of the filter settles to 0 if the incoming signal stays constant.
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If the input changes, the filter output swings to track the change and
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eventually settles back to 0.
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Mozzi documentation/API
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https://sensorium.github.io/Mozzi/doc/html/index.html
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Mozzi help/discussion/announcements:
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https://groups.google.com/forum/#!forum/mozzi-users
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Tim Barrass 2013, CC by-nc-sa.
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*/
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#include <MozziGuts.h>
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#include <DCfilter.h>
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int sensorPin = A0;
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DCfilter dcFiltered(0.9); // parameter sets how long the filter takes to settle
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void setup() {
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//Serial.begin(9600); // for Teensy 3.1, beware printout can cause glitches
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Serial.begin(115200);
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startMozzi();
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}
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void updateControl(){
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// read the value from the sensor:
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int sensorValue = mozziAnalogRead(sensorPin);
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Serial.print(sensorValue);
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Serial.print(" Filtered = ");
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Serial.println(dcFiltered.next(sensorValue));
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}
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int updateAudio(){
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return 0;
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}
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void loop(){
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audioHook();
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}
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