[PYTHON] Change the volume of Pepper according to the surrounding environment (sound)

Trigger

1. It is troublesome to adjust the volume according to the number of people at exhibitions.
2. Is volume control popular in Robot Library by Robot Start?
3. I was waiting for someone to make it, but ...
4. Let's make it because it is a great deal with "Pepper decides the winner by measuring the size of the applause of the audience" given by Professor Kawada. I thought.

API used

ALAudioDevice

• With previous w

Method used

getFrontMicEnergy()

• With previous w

Preparation

What to look for to adjust the volume.

-[x] Amount of people -[x] Volume around -[] Distance between Pepper and people -[] People's movements

I will make it with the above two.

How to decide the volume

--Noisy surroundings-> Maximum volume --Customers are not in front of Pepper-> Original volume ――One customer-> 60% because I think it's noisy if it's too big ――2 to 3 customers-> 80% because I want everyone to ask ――4 or more customers-> 100% because it seems to be difficult to hear

How it works

I want you to do it without permission, so after starting it, let the Timer move semi-permanently like this.

The output Volume (%) is put in the variable of the Set Speaker Vol. Box. After that, set the Volume each time at the set interval.

Config.py

    def onLoad(self):
        self.timer = None
        self.nFacesDetected = -1
        self.audiodevice = ALProxy("ALAudioDevice")
        self.defaultVol = self.audiodevice.getOutputVolume()
        self.vol = self.defaultVol

    def onUnload(self):
        self.cancelTimer()

    def cancelTimer(self):
        if self.timer:
            self.timer.stop()
        self.timer = None

    def onTimer(self):
        self.timerOutput()

    def startTimer(self):
        import qi
        self.timer = qi.PeriodicTask()
        self.timer.setCallback(self.onTimer)
        self.timer.setUsPeriod(int(self.getParameter("Period (s)") * 1000 * 1000))
        self.timer.start(True)

    def onInput_onStart(self):
        self.cancelTimer()
        self.startTimer()

    def onInput_onStop(self):
        self.audiodevice.setOutputVolume(self.defaultVol)
        if self.timer and self.timer.isRunning():
            self.onStopped()
        self.onUnload()

    def onInput_inputFaceTracked(self, p):
        if(len(p) > 0):
            if(self.nFacesDetected != len(p[1]) -1): # an additional array has been placed at the end for time
                self.nFacesDetected = len(p[1]) -1  # filtered info and has to be substracted when counting faces
                self._JudgeOutput( self.nFacesDetected )
        else:
            if(self.nFacesDetected != 0):
                self.nFacesDetected = 0
                self._JudgeOutput( self.nFacesDetected )

    def _JudgeOutput(self, envMaterial):
        self.logger.info("FrontMicEnergy:%d" % self.audiodevice.getFrontMicEnergy())
        self.logger.info("envMaterial:%d" % envMaterial)
        if (self.audiodevice.getFrontMicEnergy() >= 1800):
            self.EnvironmentVolume(100)
        elif envMaterial == 0:
            self.EnvironmentVolume(self.defaultVol)
        elif envMaterial == 1:
            self.EnvironmentVolume(60)
        elif envMaterial >= 2 and envMaterial < 4:
            self.EnvironmentVolume(80)
        elif envMaterial >= 4:
            self.EnvironmentVolume(100)

Start-up

To start it, check this flag next to the play button, or if you insert a plug-in, the application will start running automatically when Pepper is started.

bonus

The original volume is memorized when Config is loaded and returned when the application is closed. If you press the back bumper 4 times within 5 seconds after touching your head, the volume will be restored and the application will end.

sample

Robot Start's Robot Library https://robo-lib.com/repositories/summary/42