SpeakSsmlAsync返回BadRequest

Question

调用SpeakSsmlAsync（Microsoft Speech SDK）时，返回以下错误消息：

> CANCELED: Reason=Error
> CANCELED: ErrorCode=BadRequest 
> CANCELED: ErrorDetails=[HTTPAPI result code = HTTPAPI_OK. HTTP status code=400.] 
> CANCELED: Did you update the subscription info?

复制步骤：

1. 从以下位置下载快速入门示例 https://github.com/Azure-Samples/cognitive-services-speech-sdk/tree/master/quickstart/text-to-speech/csharp-dotnet-windows

2. 用自己的值替换订阅ID和区域，设置为活动 如文档中所述配置，清理并重建项目

3. 启动程序并输入诸如“ abracadabra”之类的文本

   ->工作正常（使用SpeakTextAsync）

4. 将SpeakTextAsync替换为SpeakSsmlAsync

5. 启动程序并输入一些文字

   -> ErrorCode = BadRequest

6. 使用正确的SSML代码重试，例如<speak version="1.0" xmlns="https://www.w3.org/2001/10/synthesis" xml:lang="en-US">abracadabra</speak>“

   -> ErrorCode = BadRequest

系统

• .NET Framework 4.6.1
• Windows 10内部版本17134
• 服务区=“西北欧”

代码

using System;
using System.Threading.Tasks;
using Microsoft.CognitiveServices.Speech;

namespace helloworld
{
    class Program
    {

        private static string endpointSpeechKey = "<MyOwnServiceKey>";
        private static string region = "westeurope";

        public static async Task SynthesisToSpeakerAsync()
        {
            var config = SpeechConfig.FromSubscription(endpointSpeechKey, region);
            using (var synthesizer = new SpeechSynthesizer(config))
            {
                Console.WriteLine("Type some text that you want to speak...");
                Console.Write("> ");
                string text = Console.ReadLine();

                using (var result = await synthesizer.SpeakSsmlAsync(text))
                {
                    if (result.Reason == ResultReason.SynthesizingAudioCompleted)
                    {
                        Console.WriteLine($"Speech synthesized to speaker for text [{text}]");
                    }
                    else if (result.Reason == ResultReason.Canceled)
                    {
                        var cancellation = SpeechSynthesisCancellationDetails.FromResult(result);
                        Console.WriteLine($"CANCELED: Reason={cancellation.Reason}");

                        if (cancellation.Reason == CancellationReason.Error)
                        {
                            Console.WriteLine($"CANCELED: ErrorCode={cancellation.ErrorCode}");
                            Console.WriteLine($"CANCELED: ErrorDetails=[{cancellation.ErrorDetails}]");
                            Console.WriteLine($"CANCELED: Did you update the subscription info?");
                        }
                    }
                }

                // This is to give some time for the speaker to finish playing back the audio
                Console.WriteLine("Press any key to exit...");
                Console.ReadKey();
            }
        }

        static void Main()
        {
            SynthesisToSpeakerAsync().Wait();
        }
    }
}

调试屏幕截图

Answer 1

Azure仅在包含语音标签时才接受SSML。否则，您会收到http-400错误。

使用下面的代码可以成功调用SpeakSsmlAsync：

gsl_rng* Initialize() { //INITIALIZE
    int rand_seed = 77711;                    //any integer
    srand(time(NULL));
    const gsl_rng_type* gsl_rng_T;
    gsl_rng* r;                        //The random variable
    gsl_rng_env_setup();
    gsl_rng_default_seed = rand_seed;
    gsl_rng_T = gsl_rng_default;
    r = gsl_rng_alloc(gsl_rng_T);
    return r;
}

int random_int(int n) {  //Generate integer random variable in [0,n[
    static gsl_rng* r2 = Initialize(); //Initialize as static
    return gsl_rng_uniform_int(r2, n);
}

void Calculations(/*Variables that have nothing to do with the random numbers*/) {
    //Stuff
    int position = random_int(Info.I);
    //Info.I is an integer member of the class "Info", its value changes //with each call of the function "Calculations".
    //.
    //.
    //.
    return;
}

在搜索Microsoft SSML时要当心。两者之间有区别

https://docs.microsoft.com/en-us/azure/cognitive-services/speech-service/speech-synthesis-markup

（这是针对Azure Speech服务进行编程时想要的）和

https://docs.microsoft.com/en-us/cortana/skills/speech-synthesis-markup-language

Answer 2

是的，Azure TTS服务仅接受带有语音标签的SSML。

原因是语音太多，因此最好明确指定要使用的语音。