public void CalcBurgPred_SinusoidalInput_ReturnsPrediction()
        {
            const int historyLength = 512;

            var inputAudio = new float[historyLength + 1];

            for (var i = 0; i < inputAudio.Length; i++)
            {
                inputAudio[i] = (float)Math.Sin(2 * Math.PI * i /
                                                (historyLength / 5.2));
            }

            AudioData audioData =
                new AudioDataMono(inputAudio);

            for (var index = 0; index < audioData.LengthSamples(); index++)
            {
                audioData.SetOutputSample(
                    index,
                    audioData.GetInputSample(index));
            }

            var prediction = ClickRepairer.CalcBurgPred(
                audioData,
                historyLength);

            Assert.AreEqual(
                prediction,
                inputAudio[inputAudio.Length - 1],
                0.000001);
        }
Esempio n. 2
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        public void FindLengthOfClick_DamagedSinusoidalInput_ReturnsLength(int shift)
        {
            const int historyLength       = 512;
            const int signalLength        = 5 * historyLength;
            const int damageLength        = 10;
            var       damageStartPosition = signalLength / 2 + shift;

            var inputAudio = new float[signalLength];

            for (var index = 0; index < inputAudio.Length; index++)
            {
                inputAudio[index] =
                    (float)Math.Sin(2 * Math.PI * index / (historyLength / 5.2));
            }

            for (var index = damageStartPosition;
                 index < damageStartPosition + damageLength;
                 index++)
            {
                inputAudio[index] = 0;
            }

            AudioData audioData =
                new AudioDataMono(inputAudio);

            for (var index = historyLength;
                 index < audioData.LengthSamples() - historyLength;
                 index++)
            {
                audioData.SetOutputSample(
                    index,
                    audioData.GetInputSample(index));

                var prediction = ClickRepairer.CalcBurgPred(
                    audioData,
                    index);

                audioData.SetPredictionErr(index,
                                           prediction - audioData.GetInputSample(index));
            }

            HelperCalculator.CalculateErrorAverageCpu(
                audioData,
                historyLength,
                audioData.LengthSamples(),
                historyLength);

            audioData.SetCurrentChannelIsPreprocessed();
            audioData.BackupCurrentChannelPredErrors();

            var result = ClickLengthFinder.FindLengthOfClick(audioData, damageStartPosition, 250, 0);

            Assert.AreEqual(damageLength, result.Length, 1);
        }