class AudioReader(object): ''' Class that reads Wav format files Input as a different scp file address Output a matrix of wav files in all scp files. ''' def __init__(self, scp_path, sample_rate=8000): super(AudioReader, self).__init__() self.sample_rate = sample_rate self.index_dict = handle_scp(scp_path) self.keys = list(self.index_dict.keys()) def _load(self, key): src, sr = read_wav(self.index_dict[key], return_rate=True) if self.sample_rate is not None and sr != self.sample_rate: raise RuntimeError('SampleRate mismatch: {:d} vs {:d}'.format( sr, self.sample_rate)) return src def __len__(self): return len(self.keys) def __iter__(self): for key in self.keys: yield key, self._load(key) def __getitem__(self, index): if type(index) not in [int, str]: raise IndexError('Unsupported index type: {}'.format(type(index))) if type(index) == int: num_uttrs = len(self.keys) if num_uttrs < index and index < 0: raise KeyError('Interger index out of range, {:d} vs {:d}'.format( index, num_uttrs)) index = self.keys[index] if index not in self.index_dict: raise KeyError("Missing utterance {}!".format(index)) return self._load(index)

这段代码定义了一个 AudioReader 类，用于读取多个 wav 格式的音频文件。构造函数的参数为一个 scp 文件的路径和采样率，默认为 8000。类中定义了 `_load` 函数来读取每个 wav 文件，并进行采样率匹配。另外，类还实现了 `__len__`、`__iter__` 和 `__getitem__` 等函数，以支持对音频文件的遍历和索引访问。

相关问题

Create a new class that reads the conversation.txt line by line and prints it to the console. In this class you should implement two different methods to read the file: 1. Implement a method using a Scanner that reads the file. (Successfully printing file content to Console: 1P) 2. Implement a method that uses a BufferedReader to read the file. (Successfully printing file content to Console: 1P) Finally, alter the second method that reads the file line by line using a BufferedReader. After printing the first two lines, make your programme wait for the user to press enter before printing the next two lines. Continue this until all the lines are printed. Once the end of the file is reached, the programme should terminate so that when the user presses enter again, nothing bad happens. Hint: You can use a Scanner which reads from the system input stream like this Scanner s = new Scanner(System.in); to wait for user input.

Sure, here's an example code for the requested class:

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;

public class FileReaderClass {
    public static void readWithScanner() {
        try {
            Scanner scanner = new Scanner(new FileReader("conversation.txt"));
            while (scanner.hasNextLine()) {
                System.out.println(scanner.nextLine());
            }
            scanner.close();
        } catch (IOException e) {
            System.out.println("An error occurred: " + e.getMessage());
        }
    }

    public static void readWithBufferedReader() {
        try {
            BufferedReader reader = new BufferedReader(new FileReader("conversation.txt"));
            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
            }
            reader.close();
        } catch (IOException e) {
            System.out.println("An error occurred: " + e.getMessage());
        }
    }

    public static void readWithBufferedReaderAndPause() {
        try {
            BufferedReader reader = new BufferedReader(new FileReader("conversation.txt"));
            String line;
            int count = 0;
            while ((line = reader.readLine()) != null) {
                System.out.println(line);
                count++;
                if (count == 2) {
                    Scanner scanner = new Scanner(System.in);
                    scanner.nextLine();
                    count = 0;
                }
            }
            reader.close();
        } catch (IOException e) {
            System.out.println("An error occurred: " + e.getMessage());
        }
    }
}

This class includes three methods that read the specified file name `conversation.txt`.

The first method `readWithScanner()` uses a `Scanner` to read the file and prints each line to the console.

The second method `readWithBufferedReader()` uses a `BufferedReader` to read the file and prints each line to the console.

The third method `readWithBufferedReaderAndPause()` also uses a `BufferedReader` to read the file, but it pauses after every two lines and waits for the user to press the enter key before continuing. To do this, we use a counter variable `count` that increments every time a new line is read. When the counter reaches two, the program waits for the user input using a `Scanner` object that reads from the system input stream. After the user presses enter, the counter is reset to zero and the program continues to read the next two lines until the end of the file is reached.

You can call these methods from anywhere in your code by simply invoking `FileReaderClass.readWithScanner()`, `FileReaderClass.readWithBufferedReader()`, or `FileReaderClass.readWithBufferedReaderAndPause()`.

Use java to create a new class that reads the conversation.txt line by line and prints it to the console. In this class you should implement two different methods to read the file:1. Implement a method using a Scanner that reads the file2. Implement a method that uses a BufferedReader to read the file.Finally, alter the second method that reads the file line by line using a BufferedReader. After printing the first two lines, make your programme wait for the user to press enter before printing the next two lines. Continue this until all the lines are printed. Once the end of the file is reached, the programme should terminate so that when the user presses enter again, nothing bad happens.

Sure, here's the code to implement the above requirements:

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;

public class ReadConversation {

    public static void main(String[] args) throws IOException {
        
        // Method 1: Using Scanner to read file
        File file = new File("conversation.txt");
        Scanner scanner = new Scanner(file);

        while (scanner.hasNextLine()) {
            System.out.println(scanner.nextLine());
        }

        scanner.close();

        System.out.println("\n---------------------------------\n");

        // Method 2: Using BufferedReader to read file
        FileReader fileReader = new FileReader(file);
        BufferedReader bufferedReader = new BufferedReader(fileReader);

        String line;
        int count = 0;
        int linesToPrint = 2;

        while ((line = bufferedReader.readLine()) != null) {
            System.out.println(line);
            count++;

            if (count == linesToPrint) {
                System.out.print("Press Enter to continue...");
                Scanner inputScanner = new Scanner(System.in);
                inputScanner.nextLine();
                count = 0;
            }
        }

        bufferedReader.close();
    }
}

This code reads the file "conversation.txt" using two different methods - `Scanner` and `BufferedReader`. The first method simply reads the file and prints it line by line. The second method reads the file line by line using `BufferedReader` and waits for the user to press enter after printing every two lines.

Hope this helps!