/// <summary> /// Replace output sample at position with prediction and /// sets prediction error sample to zero /// </summary> /// <param name="audioData"></param> /// <param name="position"></param> /// <param name="lenght"></param> public static float Repair(AudioData audioData, int position, int lenght) { for (var index = position; index < position + lenght; index++) { audioData.SetPredictionErr(index, 0.001F); audioData.SetOutputSample( index, CalcBurgPred(audioData, index) ); } for (var index = position + lenght; index < position + lenght + 5; index++) { audioData.SetPredictionErr( index, CalcBurgPred(audioData, index) - audioData.GetOutputSample(index)); } var historyLengthSamples = audioData.AudioProcessingSettings.HistoryLengthSamples; HelperCalculator.CalculateErrorAverageCpu( audioData, position - historyLengthSamples, position + lenght + historyLengthSamples, historyLengthSamples); return(HelperCalculator.CalculateDetectionLevel(audioData, position)); }
/// <summary> /// Scans segment of audio channel to find damaged samples /// and repai them /// </summary> /// <param name="audioData"></param> /// <param name="segmentStart"></param> /// <param name="segmentEnd"></param> /// <param name="progress"></param> /// <param name="cpuCore"></param> private static void ScanSegment( AudioData audioData, int segmentStart, int segmentEnd, IProgress <double> progress, int cpuCore) { var lastProcessedSample = 0; // cycle to check every sample for (var index = segmentStart; index < segmentEnd; index++) { // only core #0 reports progress if (cpuCore == 0) { ThrottledReportProgress(progress, index, segmentEnd); } if (index <= lastProcessedSample || !ClickDetector.IsSampleSuspicious( audioData, index)) { continue; } var maxLength = HelperCalculator.GetMaxLength(audioData, index); var result = ClickLengthFinder.FindLengthOfClick( audioData, index, maxLength, lastProcessedSample); if (!result.Success) { continue; } ClickRepairer.Repair(audioData, result.Position, result.Length); audioData.AddClickToList(new AudioClick( result.Position, result.Length, HelperCalculator.CalculateDetectionLevel(audioData, result.Position), audioData, audioData.GetCurrentChannelType())); lastProcessedSample = result.Position + result.Length + 1; } }