Use Cases for SpeechSynthesizer: .wav file, speaker, in-memory stream | Microsoft Azure AI Solution

Correct Answer: D.

Option A is incorrect because the SpeechConfig variable is necessary for all use cases.

Hence its value cannot be null.

Option B is incorrect because to output audio directly to a speaker, you would omit the audiConfig parameter.

Option C is incorrect because the SpeechConfig variable is necessary for all use cases.

Hence its value cannot be null.

Option D is correct.

Here is the correct mapping of use cases and variables.

To output audio to a .wav file, use the following “using” statement:

using var synthesizer = new SpeechSynthesizer(speechConfig, audioConfig);

To output audio to a speaker, use the following “using” statement.

using var synthesizer = new SpeechSynthesizer(speechConfig);

To output audio as an in-memory stream, use the following “using” statement.

using var synthesizer = new SpeechSynthesizer(speechConfig, null);

Reference:

To learn more about synthesizing speech to a file, use the link given below:

Sure, I'll be happy to provide a detailed explanation for this question!

The Azure Speech service is a cloud-based service that provides a suite of tools for speech recognition and speech synthesis. In this question, we are specifically asked to configure the SpeechSynthesizer object to meet three different use cases: output audio to a .wav file, output audio to a speaker, and output audio as an in-memory stream.

To configure the SpeechSynthesizer object, we need to use the appropriate constructor and pass in the appropriate configuration objects. The SpeechSynthesizer constructor takes two parameters: a SpeechConfig object and an AudioConfig object. The SpeechConfig object is used to configure the speech recognition service, while the AudioConfig object is used to configure the audio output.

Let's go through each of the use cases and map them to the appropriate variable:

Use Case 1: Output audio to a .wav file For this use case, we need to configure the SpeechSynthesizer to output audio to a .wav file. To do this, we need to use the AudioFileOutputFormat class to specify the output format. We can then pass an instance of this class to the AudioConfig object. The SpeechConfig object is not needed for this use case.

The appropriate variable for this use case is Var 3:

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var synthesizer = new SpeechSynthesizer(speechConfig, audioConfig); 

Use Case 2: Output audio to a speaker For this use case, we need to configure the SpeechSynthesizer to output audio to a speaker. To do this, we need to use the SpeakerAudioDestination class to specify the output destination. We can then pass an instance of this class to the AudioConfig object. The SpeechConfig object is not needed for this use case.

The appropriate variable for this use case is Var 4:

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var synthesizer = new SpeechSynthesizer(speechConfig); 

Use Case 3: Output audio as an in-memory stream For this use case, we need to configure the SpeechSynthesizer to output audio as an in-memory stream. To do this, we need to use the PullAudioOutputStream class to create an in-memory stream. We can then pass an instance of this class to the AudioConfig object. The SpeechConfig object is needed for this use case to specify the speech synthesis language.

The appropriate variable for this use case is Var 2:

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var synthesizer = new SpeechSynthesizer(null, audioConfig); 

Therefore, the correct answer is option C: Use Case 1: Var 3; Use Case 2: Var 4; Use Case 3: Var 2.