使用Watson Unity SDK文本语音转换示例时的错误

Question

我试图使用Watson Unity SDK随附的示例脚本“ ExampleTextToSpeech”。 但是，Watson Text to Speech示例在尝试合成时会引发错误。 我的服务IAM密钥似乎正确。 我没有指定AIM URL或服务URL。 我认为默认值应该是正确的，因为我在北美地区，并且对Watson Assistant和语音转文本都有效。 问题似乎出在Synthesize调用上。 我在下面列出了错误。

抱歉，我第一次没有发布实际代码。 我以为我不需要，因为它与SDK演示中的代码相同。 请在下面找到代码。 我删除了一些无关的代码位，例如从代码中定制单词。 错误可以在代码块的末尾找到。

using UnityEngine;
using IBM.Watson.DeveloperCloud.Services.TextToSpeech.v1;
using IBM.Watson.DeveloperCloud.Logging;
using IBM.Watson.DeveloperCloud.Utilities;
using System.Collections;
using System.Collections.Generic;
using IBM.Watson.DeveloperCloud.Connection;

public class TTS : MonoBehaviour
{
    //Iam Apikey: v0qlUa8hojlVW8rKBh48fO0JtQYTO9vfNkGMG6wpptbs
    #region PLEASE SET THESE VARIABLES IN THE INSPECTOR
    [Space(10)]
    [Tooltip("The service URL (optional). This defaults to \"https://stream.watsonplatform.net/text-to-speech/api\"")]
    [SerializeField]
    private string _serviceUrl;
    [Header("CF Authentication")]
    [Tooltip("The authentication username.")]
    [SerializeField]
    private string _username;
    [Tooltip("The authentication password.")]
    [SerializeField]
    private string _password;
    [Header("IAM Authentication")]
    [Tooltip("The IAM apikey.")]
    [SerializeField]
    private string _iamApikey;
    [Tooltip("The IAM url used to authenticate the apikey (optional). This defaults to \"https://iam.bluemix.net/identity/token\".")]
    [SerializeField]
    private string _iamUrl;

    #endregion

    TextToSpeech _service;
    string _testString = "<speak version=\"1.0\"><say-as interpret-as=\"letters\">I'm sorry</say-as>. <prosody pitch=\"150Hz\">This is Text to Speech!</prosody><express-as type=\"GoodNews\">I'm sorry. This is Text to Speech!</express-as></speak>";

    string _createdCustomizationId;
    CustomVoiceUpdate _customVoiceUpdate;
    string _customizationName = "unity-example-customization";
    string _customizationLanguage = "en-US";
    string _customizationDescription = "A text to speech voice customization created within Unity.";
    string _testWord = "Watson";

    private bool _synthesizeTested = false;
    private bool _getVoicesTested = false;
    private bool _getVoiceTested = false;
    private bool _getPronuciationTested = false;
    private bool _getCustomizationsTested = false;
    private bool _createCustomizationTested = false;
    private bool _deleteCustomizationTested = false;
    private bool _getCustomizationTested = false;
    private bool _updateCustomizationTested = false;
    private bool _getCustomizationWordsTested = false;
    private bool _addCustomizationWordsTested = false;
    private bool _deleteCustomizationWordTested = false;
    private bool _getCustomizationWordTested = false;

    void Start()
    {
        LogSystem.InstallDefaultReactors();
        Runnable.Run(CreateService());
    }

    private IEnumerator CreateService()
    {
        //  Create credential and instantiate service
        Credentials credentials = null;
        if (!string.IsNullOrEmpty(_username) && !string.IsNullOrEmpty(_password))
        {
            //  Authenticate using username and password
            credentials = new Credentials(_username, _password, _serviceUrl);
        }
        else if (!string.IsNullOrEmpty(_iamApikey))
        {
            //  Authenticate using iamApikey
            TokenOptions tokenOptions = new TokenOptions()
            {
                IamApiKey = _iamApikey,
                IamUrl = _iamUrl
            };

            credentials = new Credentials(tokenOptions, _serviceUrl);

            //  Wait for tokendata
            while (!credentials.HasIamTokenData())
                yield return null;
        }
        else
        {
            throw new WatsonException("Please provide either username and password or IAM apikey to authenticate the service.");
        }

        _service = new TextToSpeech(credentials);

        Runnable.Run(Examples());
    }

    private IEnumerator Examples()
    {
        //  Synthesize
        Log.Debug("ExampleTextToSpeech.Examples()", "Attempting synthesize.");
        _service.Voice = VoiceType.en_US_Allison;
        _service.ToSpeech(HandleToSpeechCallback, OnFail, _testString, true);
        while (!_synthesizeTested)
            yield return null;

        //  Get Voices
        Log.Debug("ExampleTextToSpeech.Examples()", "Attempting to get voices.");
        _service.GetVoices(OnGetVoices, OnFail);
        while (!_getVoicesTested)
            yield return null;

        //  Get Voice
        Log.Debug("ExampleTextToSpeech.Examples()", "Attempting to get voice {0}.", VoiceType.en_US_Allison);
        _service.GetVoice(OnGetVoice, OnFail, VoiceType.en_US_Allison);
        while (!_getVoiceTested)
            yield return null;

        Log.Debug("ExampleTextToSpeech.Examples()", "Text to Speech examples complete.");
    }

    void HandleToSpeechCallback(AudioClip clip, Dictionary<string, object> customData = null)
    {
        PlayClip(clip);
    }

    private void PlayClip(AudioClip clip)
    {
        if (Application.isPlaying && clip != null)
        {
            GameObject audioObject = new GameObject("AudioObject");
            AudioSource source = audioObject.AddComponent<AudioSource>();
            source.spatialBlend = 0.0f;
            source.loop = false;
            source.clip = clip;
            source.Play();

            Destroy(audioObject, clip.length);

            _synthesizeTested = true;
        }
    }

    private void OnGetVoices(Voices voices, Dictionary<string, object> customData = null)
    {
        Log.Debug("ExampleTextToSpeech.OnGetVoices()", "Text to Speech - Get voices response: {0}", customData["json"].ToString());
        _getVoicesTested = true;
    }

    private void OnGetVoice(Voice voice, Dictionary<string, object> customData = null)
    {
        Log.Debug("ExampleTextToSpeech.OnGetVoice()", "Text to Speech - Get voice  response: {0}", customData["json"].ToString());
        _getVoiceTested = true;
    }

    private void OnFail(RESTConnector.Error error, Dictionary<string, object> customData)
    {
        Log.Error("ExampleTextToSpeech.OnFail()", "Error received: {0}", error.ToString());
    }
}




    [12/11/2018 16:57:45][RESTConnector.ProcessRequestQueue()][ERROR] URL: /v1/synthesize?accept=audio%2fwav&voice=en-US_AllisonVoice&text=%3cspeak+version%3d%221.0%22%3e%3csay-as+interpret-as%3d%22letters%22%3eI%27m+sorry%3c%2fsay-as%3e.+%3cprosody+pitch%3d%22150Hz%22%3eThis+is+Text+to+Speech%21%3c%2fprosody%3e%3cexpress-as+type%3d%22GoodNews%22%3eI%27m+sorry.+This+is+Text+to+Speech%21%3c%2fexpress-as%3e%3c%2fspeak%3e, ErrorCode: 0, Error: Cannot connect to destination host, Response: 
    UnityEngine.Debug:LogError(Object)
    IBM.Watson.DeveloperCloud.Debug.DebugReactor:ProcessLog(LogRecord) (at Assets/Watson/Scripts/Debug/DebugReactor.cs:60)
    IBM.Watson.DeveloperCloud.Logging.LogSystem:ProcessLog(LogRecord) (at Assets/Watson/Scripts/Logging/Logger.cs:206)
    IBM.Watson.DeveloperCloud.Logging.Log:Error(String, String, Object[]) (at Assets/Watson/Scripts/Logging/Logger.cs:279)
    IBM.Watson.DeveloperCloud.Connection.<ProcessRequestQueue>c__Iterator0:MoveNext() (at Assets/Watson/Scripts/Connection/RESTConnector.cs:607)
    IBM.Watson.DeveloperCloud.Utilities.Routine:MoveNext() (at Assets/Watson/Scripts/Utilities/Runnable.cs:131)
    UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)



    [12/11/2018 16:57:45][ExampleTextToSpeech.OnFail()][ERROR] Error received: URL: /v1/synthesize?accept=audio%2fwav&voice=en-US_AllisonVoice&text=%3cspeak+version%3d%221.0%22%3e%3csay-as+interpret-as%3d%22letters%22%3eI%27m+sorry%3c%2fsay-as%3e.+%3cprosody+pitch%3d%22150Hz%22%3eThis+is+Text+to+Speech%21%3c%2fprosody%3e%3cexpress-as+type%3d%22GoodNews%22%3eI%27m+sorry.+This+is+Text+to+Speech%21%3c%2fexpress-as%3e%3c%2fspeak%3e, ErrorCode: 0, Error: Cannot connect to destination host, Response: 
    UnityEngine.Debug:LogError(Object)
    IBM.Watson.DeveloperCloud.Debug.DebugReactor:ProcessLog(LogRecord) (at Assets/Watson/Scripts/Debug/DebugReactor.cs:60)
    IBM.Watson.DeveloperCloud.Logging.LogSystem:ProcessLog(LogRecord) (at Assets/Watson/Scripts/Logging/Logger.cs:206)
    IBM.Watson.DeveloperCloud.Logging.Log:Error(String, String, Object[]) (at Assets/Watson/Scripts/Logging/Logger.cs:279)
    TTS:OnFail(Error, Dictionary`2) (at Assets/Scripts/TTS.cs:158)
    IBM.Watson.DeveloperCloud.Services.TextToSpeech.v1.TextToSpeech:ToSpeechResponse(Request, Response) (at Assets/Watson/Scripts/Services/TextToSpeech/v1/TextToSpeech.cs:492)
    IBM.Watson.DeveloperCloud.Connection.<ProcessRequestQueue>c__Iterator0:MoveNext() (at Assets/Watson/Scripts/Connection/RESTConnector.cs:647)
    IBM.Watson.DeveloperCloud.Utilities.Routine:MoveNext() (at Assets/Watson/Scripts/Utilities/Runnable.cs:131)
    UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)

Answer 1

您应该为您所在地区的“文字转语音”服务明确使用服务URL。 这是美国南部的URL

https://stream.watsonplatform.net/text-to-speech/api

SDK存在一个问题，其中未使用默认服务URL。 合并此拉取请求后，该问题将得到解决。

https://github.com/watson-developer-cloud/unity-sdk/pull/486