title: NSSpeechSynthesizer Change the language
body: <p>I'm writing a simple program based in an example of a Cocoa Book that uses a NSSpeechSynthesizer to speak phrases. I would like to know how can I change the language used to synthesize the phase.                                                                                  </p>
  
  <pre><code>#import "PHAppDelegate.h"
  
  @implementation PHAppDelegate
  
  @synthesize window = _window;
  @synthesize textField = _textField;
  
  - (id)init{
  
      self = [super init];
  
      if(self){
  
          NSLog(@"init");
  
          _speechSynth = [[NSSpeechSynthesizer alloc] initWithVoice:nil];
  
      }
  
          return self;
  
  }
  
  - (void)applicationDidFinishLaunching:(NSNotification *)aNotification
  {
      // Insert code here to initialize your application
  }
  
  - (IBAction)stopIt:(id)sender {
  
      NSLog(@"stoppping");
      [_speechSynth stopSpeaking];
  
  }
  
  - (IBAction)sayit:(id)sender {
  
      NSString *string = [_textField stringValue];
  
      if([string length] == 0){
  
          NSLog(@"There is no text to speech.");
  
          return;
      }
  
      NSString *voiceID =[[NSSpeechSynthesizer availableVoices] objectAtIndex:10];
  
      [_speechSynth setVoice:voiceID];
  
      [_speechSynth startSpeakingString:string];
  
  
      NSLog(@"Have started to say: %@", string);
  
  
  }
  @end
  </code></pre>
  
  <p>This code works fine.</p>