Get all voices on an OS X system as a JSON

getVoices.swift

#!/usr/bin/swift
import Foundation
import Cocoa

var voices = NSSpeechSynthesizer.availableVoices();
var locale = NSLocale.init(localeIdentifier: "en-us");

var voicesInfo = [String:AnyObject]();

for voice in voices {
    var currentVoice = NSSpeechSynthesizer.attributesForVoice(voice);
    
    var cvInfo = [String:AnyObject]();
    
    
    cvInfo["name"]   = currentVoice[NSVoiceName]!;
    cvInfo["gender"] = currentVoice[NSVoiceGender]!;
    cvInfo["language"] = currentVoice[NSVoiceLocaleIdentifier]!;
    cvInfo["languageName"] = locale.displayNameForKey(NSLocaleIdentifier, value: cvInfo["language"]!);
    cvInfo["demoText"] = currentVoice[NSVoiceDemoText]!;

    voicesInfo[currentVoice[NSVoiceIdentifier]! as! String] = cvInfo;
  
 }

var data = try NSJSONSerialization.dataWithJSONObject(voicesInfo, options: NSJSONWritingOptions.PrettyPrinted);

var dataString = NSString.init(data: data, encoding: NSUTF8StringEncoding)

print(dataString!);