/// <summary>
        /// 分析双音色波形
        /// </summary>
        /// <param name="testData">测试波形</param>
        /// <param name="sampleRate">采样率</param>
        /// <param name="imdType">IMD类型</param>
        /// <param name="frequency1">第一频率</param>
        /// <param name="frequency2">第二频率</param>
        /// <param name="amplitudeRatio">幅度比</param>
        /// <param name="IMDInDb">IMD数值(dB)</param>
        public static void AnalyzeDualToneWave(double[] testData, double sampleRate, IMDType imdType, out double frequency1,
                                               out double frequency2, out double amplitudeRatio, out double IMDInDb)
        {
            DualToneAnalyzer analyzer = new DualToneAnalyzer();

            analyzer.SetImdType((ImdType)imdType);
            analyzer.SetDataSampleRate(sampleRate);
            analyzer.Analyze(testData, (uint)testData.Length);
            frequency1     = analyzer.GetFrequency1();
            frequency2     = analyzer.GetFrequency2();
            amplitudeRatio = analyzer.GetAmplitudeRatioF1toF2();
            IMDInDb        = analyzer.GetIMD();
        }