java :获取wav文件的编码格式，音频的通道数，采样频率，采样位数

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我是靠谱客的博主无限爆米花，这篇文章主要介绍java :获取wav文件的编码格式，音频的通道数，采样频率，采样位数，现在分享给大家，希望可以做个参考。

public static int toInt(byte[] b) {
        return ((b[3] << 24) + (b[2] << 16) + (b[1] << 8) + (b[0] << 0));
    }

    public static short toShort(byte[] b) {
        return (short)((b[1] << 8) + (b[0] << 0));
    }


    public static byte[] read(RandomAccessFile rdf, int pos, int length) throws IOException {
        rdf.seek(pos);
        byte result[] = new byte[length];
        for (int i = 0; i < length; i++) {
            result[i] = rdf.readByte();
        }
        return result;
    }


    public static void main(String[] args) throws IOException {

        File f = new File("c:\bong.wav");
        RandomAccessFile rdf = null;
        rdf = new RandomAccessFile(f,"r");

        System.out.println("audio size: " + toInt(read(rdf, 4, 4))); // 声音尺寸

        System.out.println("audio format: " + toShort(read(rdf, 20, 2))); // 音频格式 1 = PCM

        System.out.println("num channels: " + toShort(read(rdf, 22, 2))); // 1 单声道 2 双声道

        System.out.println("sample rate: " + toInt(read(rdf, 24, 4))); // 采样率、音频采样级别 8000 = 8KHz

        System.out.println("byte rate: " + toInt(read(rdf, 28, 4))); // 每秒波形的数据量

        System.out.println("block align: " + toShort(read(rdf, 32, 2))); // 采样帧的大小

        System.out.println("bits per sample: " + toShort(read(rdf, 34, 2))); // 采样位数

        rdf.close();

    }