Java implements speech recognition and processing functions of form data

Java implements speech recognition and processing functions of form data

Introduction:
In today's digital era, speech recognition technology has gradually become one of the important ways of human-computer interaction. one. Speech recognition technology can help us convert speech data into text for subsequent processing and analysis. This article will introduce how to use Java to implement speech recognition and processing functions of form data, and detail the steps and methods of implementation through sample code.

Step 1: Introduce the required dependencies
To implement the speech recognition function, we need to import the corresponding Java speech library. Here, we use the library provided by Java Speech API (JSAPI) to achieve this. JSAPI is a standard Java API that can easily implement speech recognition and synthesis functions.

First, we need to download the JSAPI implementation library, which can be downloaded from the official website (http://java.sun.com/products/java-media/speech/). Once the download is complete, add the relevant jar files to the classpath of your Java project.

Step 2: Create a speech recognition function class
We can create a class named SpeechRecognizer to implement the speech recognition function. First, we need to implement the relevant interfaces and introduce the required class libraries. The following is a simple sample code:

import javax.speech.*;
import javax.speech.recognition.*;
import java.io.FileReader;

public class SpeechRecognizer implements ResultListener {

    private Recognizer recognizer;

    public void recognize(String audioFilePath) {
        try {
            recognizer = Central.createRecognizer(null);
            recognizer.allocate();

            FileReader grammarFile = new FileReader("grammar.txt");
            RuleGrammar ruleGrammar = recognizer.loadJSGF(grammarFile);
            
            recognizer.addResultListener(this);
            
            recognizer.commitChanges();
            recognizer.requestFocus();

            recognizer.suspend();
            recognizer.resume();
            
            while (!done) {
                Thread.sleep(100);
            }
            
            recognizer.deallocate();
            grammarFile.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public void resultCreated(ResultEvent event) {
        try {
            Result result = (Result) event.getSource();
            ConfidenceResult[] confidenceResults = result.getBestResults();
            
            for (ConfidenceResult confidentResult : confidenceResults) {
                String spokenText = confidentResult.getSpokenText();
                System.out.println("You said: " + spokenText);
                
                // 进行后续处理，例如将语音转化为文字表单数据
                // ...
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Step 3: Create a grammar file
In the above sample code, we loaded a grammar file named grammar.txt. This grammar file defines the format of the speech form data we wish to recognize. We can use the following grammar rules:

#JSGF V1.0;

grammar form;

public <form> = (name is | gender is | age is) (John | Lisa | male | female | 20 | 30);

This grammar defines a simple form, including name, gender and age. The recognized speech formats are "The name is John", "Gender" "Is male", "Age is 20", etc.

Step 4: Call the speech recognition function class
The above example code defines a SpeechRecognizer class, which we can call in the main function to implement speech recognition and processing functions.

public class Main {
    public static void main(String[] args) {
        String audioFilePath = "audio.wav";

        SpeechRecognizer recognizer = new SpeechRecognizer();
        recognizer.recognize(audioFilePath);
    }
}

We need to store the voice data in an audio file named audio.wav, and then call the recognize method for speech recognition and processing.

Conclusion:
Through the introduction of this article, we can learn how to use Java to implement speech recognition and processing functions of form data. Through the interfaces and libraries provided by Java Speech API (JSAPI), we can easily convert speech data into text and perform subsequent processing and analysis. I hope this article will be helpful to your learning and development in speech recognition.

Reference materials:

1. JSAPI official website: http://java.sun.com/products/java-media/speech/
2. Java Speech API ( JSAPI) official document: http://download.oracle.com/otn-pub/jcp/speech-api-1.0-fr-oth-JSpec/speech-api-1.0-fr-oth-JSpec.pdf

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