ios - Swift: iPhone's volume is low when trying to change speech to iPhone's voice in swift -


i trying speech recognition sample. if started recognise speech via microphone, tried iphone's voice of recognised text. working. but, voice low. can u guide me on this?

rather than, if trying in simple button action, avspeechutterance code, volume normal.

after that, if go startrecognise() method, volume low.

my code

func startrecognise() { let audiosession = avaudiosession.sharedinstance()  //2         {         try audiosession.setcategory(avaudiosessioncategoryplayandrecord)         try audiosession.setmode(avaudiosessionmodedefault)         try audiosession.setmode(avaudiosessionmodemeasurement)         try audiosession.setactive(true, with: .notifyothersondeactivation)         try avaudiosession.sharedinstance().overrideoutputaudioport(avaudiosessionportoverride.speaker)     }     catch     {         print("audiosession properties weren't set because of error.")     }     recognitionrequest = sfspeechaudiobufferrecognitionrequest()     guard let inputnode = audioengine.inputnode else {         fatalerror("audio engine has no input node")     }     guard let recognitionrequest = recognitionrequest else {         fatalerror("unable create sfspeechaudiobufferrecognitionrequest object")     }     recognitionrequest.shouldreportpartialresults = true     recognitiontask = speechrecognizer.recognitiontask(with: recognitionrequest, resulthandler: { (result, error) in         if result != nil         {             let lastword = result?.besttranscription.formattedstring.components(separatedby: " ").last             if lastword == "repeat" || lastword == "repeat"{                 self.myutterance2 = avspeechutterance(string: "you have spoken repeat")                 self.myutterance2.rate = 0.4                 self.myutterance2.volume = 1.0                 self.myutterance2.pitchmultiplier = 1.0                 self.synth1.speak(self.myutterance2)                 // here voice low.              }         }     })     let recordingformat = inputnode.outputformat(forbus: 0)  //11     inputnode.installtap(onbus: 0, buffersize: 1024, format: recordingformat) { (buffer, when) in     self.recognitionrequest?.append(buffer)     }     audioengine.prepare()          {         try audioengine.start()     }      catch      {         print("audioengine couldn't start because of error.")     } }

my button action

func buttonaction() {    self.myutterance2 = avspeechutterance(string: "you in button action")    self.myutterance2.rate = 0.4    self.myutterance2.volume = 1.0    self.myutterance2.pitchmultiplier = 1.0    self.synth1.speak(self.myutterance2)    // before going startrecognise() method,     //i tried buttonaction(),     //this time volume normal.     //after startrecognise() method call, volume low in both methods. }

finally, got solution.

func startrecognise() { let audiosession = avaudiosession.sharedinstance()  //2         {         try audiosession.setcategory(avaudiosessioncategoryplayandrecord)         try audiosession.setmode(avaudiosessionmodedefault)         //try audiosession.setmode(avaudiosessionmodemeasurement)         try audiosession.setactive(true, with: .notifyothersondeactivation)         try avaudiosession.sharedinstance().overrideoutputaudioport(avaudiosessionportoverride.speaker)     }     catch     {         print("audiosession properties weren't set because of error.")     }      ...  }

once comment line, try audiosession.setmode(avaudiosessionmodemeasurement), volume working normal.


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