How to set AVAudioUnitEQ equalizer presets gain values for 10 frequency bands in iOS Swift











up vote
1
down vote

favorite












I could add an audio setup to change equalizer by changing slider values by 



let FREQUENCY: [Float] = [31, 62, 125, 250, 500, 1000, 2000, 4000, 8000, 16000]

//let FREQUENCY: [Float] = [60, 230, 910, 3600, 14000]



self.audioEngine = AVAudioEngine.init()

self.audioPlayerNode = AVAudioPlayerNode.init()

self.audioUnitEQ = AVAudioUnitEQ(numberOfBands: 10)

self.audioEngine.attach(self.audioPlayerNode)

self.audioEngine.attach(self.audioUnitEQ)        



for i in 0...9 {

    self.audioUnitEQ.bands[i].filterType = .parametric

    self.audioUnitEQ.bands[i].frequency = FREQUENCY[i]

    self.audioUnitEQ.bands[i].bandwidth = 0.5 // half an octave

    let eq = self.value(forKey: String(format: "eq%d", i)) as! UISlider

    self.audioUnitEQ.bands[i].gain = eq.value

    self.audioUnitEQ.bands[i].bypass = false

}


But Is there any method to change gain values or set equalizer presets like Accoustics, Rock etc. How to set their gain values for those presets






ios swift avplayer equalizer preset







share|improve this question




























    up vote
    1
    down vote

    favorite












    I could add an audio setup to change equalizer by changing slider values by 



    let FREQUENCY: [Float] = [31, 62, 125, 250, 500, 1000, 2000, 4000, 8000, 16000]
    
//let FREQUENCY: [Float] = [60, 230, 910, 3600, 14000]
    

    
self.audioEngine = AVAudioEngine.init()
    
self.audioPlayerNode = AVAudioPlayerNode.init()
    
self.audioUnitEQ = AVAudioUnitEQ(numberOfBands: 10)
    
self.audioEngine.attach(self.audioPlayerNode)
    
self.audioEngine.attach(self.audioUnitEQ)        
    

    
for i in 0...9 {
    
    self.audioUnitEQ.bands[i].filterType = .parametric
    
    self.audioUnitEQ.bands[i].frequency = FREQUENCY[i]
    
    self.audioUnitEQ.bands[i].bandwidth = 0.5 // half an octave
    
    let eq = self.value(forKey: String(format: "eq%d", i)) as! UISlider
    
    self.audioUnitEQ.bands[i].gain = eq.value
    
    self.audioUnitEQ.bands[i].bypass = false
    
}


    But Is there any method to change gain values or set equalizer presets like Accoustics, Rock etc. How to set their gain values for those presets






    ios swift avplayer equalizer preset







    share|improve this question


























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I could add an audio setup to change equalizer by changing slider values by 



      let FREQUENCY: [Float] = [31, 62, 125, 250, 500, 1000, 2000, 4000, 8000, 16000]
      
//let FREQUENCY: [Float] = [60, 230, 910, 3600, 14000]
      

      
self.audioEngine = AVAudioEngine.init()
      
self.audioPlayerNode = AVAudioPlayerNode.init()
      
self.audioUnitEQ = AVAudioUnitEQ(numberOfBands: 10)
      
self.audioEngine.attach(self.audioPlayerNode)
      
self.audioEngine.attach(self.audioUnitEQ)        
      

      
for i in 0...9 {
      
    self.audioUnitEQ.bands[i].filterType = .parametric
      
    self.audioUnitEQ.bands[i].frequency = FREQUENCY[i]
      
    self.audioUnitEQ.bands[i].bandwidth = 0.5 // half an octave
      
    let eq = self.value(forKey: String(format: "eq%d", i)) as! UISlider
      
    self.audioUnitEQ.bands[i].gain = eq.value
      
    self.audioUnitEQ.bands[i].bypass = false
      
}


      But Is there any method to change gain values or set equalizer presets like Accoustics, Rock etc. How to set their gain values for those presets






      ios swift avplayer equalizer preset







      share|improve this question















      I could add an audio setup to change equalizer by changing slider values by 



      let FREQUENCY: [Float] = [31, 62, 125, 250, 500, 1000, 2000, 4000, 8000, 16000]
      
//let FREQUENCY: [Float] = [60, 230, 910, 3600, 14000]
      

      
self.audioEngine = AVAudioEngine.init()
      
self.audioPlayerNode = AVAudioPlayerNode.init()
      
self.audioUnitEQ = AVAudioUnitEQ(numberOfBands: 10)
      
self.audioEngine.attach(self.audioPlayerNode)
      
self.audioEngine.attach(self.audioUnitEQ)        
      

      
for i in 0...9 {
      
    self.audioUnitEQ.bands[i].filterType = .parametric
      
    self.audioUnitEQ.bands[i].frequency = FREQUENCY[i]
      
    self.audioUnitEQ.bands[i].bandwidth = 0.5 // half an octave
      
    let eq = self.value(forKey: String(format: "eq%d", i)) as! UISlider
      
    self.audioUnitEQ.bands[i].gain = eq.value
      
    self.audioUnitEQ.bands[i].bypass = false
      
}


      But Is there any method to change gain values or set equalizer presets like Accoustics, Rock etc. How to set their gain values for those presets






      ios swift avplayer equalizer preset




      ios swift avplayer equalizer preset






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 4 hours ago

























      asked 6 hours ago









      Dinesh Kumar

      658




      658





























          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














           

          draft saved


          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53370729%2fhow-to-set-avaudiouniteq-equalizer-presets-gain-values-for-10-frequency-bands-in%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















           

          draft saved


          draft discarded



















































           


          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53370729%2fhow-to-set-avaudiouniteq-equalizer-presets-gain-values-for-10-frequency-bands-in%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          'app-layout' is not a known element: how to share Component with different Modules

          Image
          0 My application was working fine until I decided to go with lazy loading: So, my shared component looks like this: import { Component, Renderer2 } from '@angular/core'; export interface FormModel { captcha?: string; } @Component({ selector: 'app-layout', templateUrl: './app-layout.component.html', styleUrls: ['./app-layout.css'] }) export class FullLayoutComponent { } app-layout.component.ts I am using this component in my Another component say school-home.component.html like this: <app-layout> </app-layout> and it was working fine until I created a Module school-home.module.ts like this: import { NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import { SchoolhomeRoutingModule ...
          Read more

          android studio warns about leanback feature tag usage required on manifest while using Unity exported app?

          Image
          .everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 0 This is a simple project showing cubes on Unity, exported to android project and imported on Android studio. On maifest file it showed following warning: Expecting <uses-feature android:name="android.software.leanback" android:required="false" /> tag I have no information about it. And also on default emptyview android project does not use/mention this feature. I know it is required by TV's and such but why its not added by default? Why is this? And Should I concern about it? android unity3d ...
          Read more

          WPF add header to Image with URL pettitions [duplicate]

          Image
          up vote 0 down vote favorite This question already has an answer here: Image source URI requiring authorization 3 answers Add header to all* HTTP requests on a machine 1 answer first of all sorry for my english. Recently I added some security in the backend of my project, and now I need to send a validation code(apiKey) inside the headers to retrieve the images. I have a problem with ALL images in my project that I had attached in my UI. For example, before I had: <Image Height="90" Source="{Binding Video.Thumbnail}"/> Now I need to change my code to create a CUSTOM petition add the apiKey in the header:...
          Read more