Microphone Class Reference

API for the Analog Microphone. More...

Detailed Description

• ID: mic
• Name: Analog Microphone
• Other Names: Grove Sound Sensor
• Category: sound
• Manufacturer: seeed
• Link: http://www.seeedstudio.com/wiki/Grove_-_Sound_Sensors
• Connection: pwm
• Kit: gsk

This module defines the Analog Microphone sensor

        short[] buffer = new short[128];

        // Attach microphone to analog port A0
        upm_mic.Microphone sensor = new upm_mic.Microphone(0);

        upm_mic.thresholdContext ctx = new upm_mic.thresholdContext();
        ctx.setAverageReading(0);
        ctx.setRunningAverage(0);
        ctx.setAveragedOver(2);

        // Repeatedly, take a sample every 2 microseconds;
        // find the average of 128 samples; and
        // print a running graph of the averages
        while (true) {
            int len = sensor.getSampledWindow(2, buffer);

            if (len != 0) {
                int thresh = sensor.findThreshold(ctx, 30, buffer);
                sensor.printGraph(ctx);
                if (thresh != 0) {
                    System.out.println("---Threshold reached---  " + ctx.getRunningAverage() + "  "
                            + ctx.getAverageReading());
                }
            }
        }

Public Member Functions
synchronized void	delete ()
	Microphone (int micPin)
int	getSampledWindow (long freqMS, short[] numberOfSamples)
int	findThreshold (thresholdContext ctx, long threshold, short[] buffer)
void	printGraph (thresholdContext ctx)

Constructor & Destructor Documentation

Microphone

(

int

micPin

)

Instantiates a Microphone object

Parameters

micPin

Pin where the microphone is connected

Member Function Documentation

void printGraph

(

thresholdContext

ctx

)

Prints a running average of the threshold context

Parameters

ctx	Threshold context

---

The documentation for this class was generated from the following file:

• /var/lib/jenkins/workspace/upm-doc-stable/build-33/src/mic/Microphone.java