22 TIMES COPIERS WORKING CODES 22 SHRUTIS SHIFTERS AND COPIERS 8000 HZ 16 BITS SINED PCMS GTAMPS

 

namespace SAAN_FRESH___RAW_NON_APIS_WAVES_TO_SHRUTIES_COPIER_GPTS

{

    public class WavGenerator___Reads_GTAMPS_MONO_8000_Hz_Samples_16_bits_no_3rd_party_apis

    {

        const int SampleRate = 8000;

        const int BitsPerSample = 16;

        const int Channels = 1;

        const double Pi = Math.PI;

        public static void SAANS___WavGenerator___Reads_GTAMPS_MONO_8000_Hz_Samples_16_bits_no_3rd_party_apis___Main(string gtamps_filesnames)

        {

            string inputPath = gtamps_filesnames;// "your_file_path_here.txt";

           

            // Read float samples

            var samples = File.ReadLines(inputPath)

                              .Where(line => double.TryParse(line, out _))

                              .Select(double.Parse)

                              .ToList();

            var allShifted = new List<short>();

            for (int r = 1; r <= 22; r++)

            {

                double shiftFactor = Math.Pow(2, r / 22.0);

                var shifted = ResampleWithFrequencyShift(samples, shiftFactor);

                allShifted.AddRange(shifted);

            }//for (int r = 1; r <= 22; r++)

            string outputPath = inputPath + "___8000hZ_16_BITS_PCMS_"+allShifted.Count.ToString() + "_output.wav";

            WriteWavFile(outputPath, allShifted);

            Console.WriteLine("WAV file written to: " + outputPath);

        }//public static void SAANS___WavGenerator___Reads_GTAMPS_MONO_8000_Hz_Samples_16_bits_no_3rd_party_apis___Main(STRING gtamps_filesnames)

        public static List<short> ResampleWithFrequencyShift(List<double> samples, double shiftFactor)

        {

            int newLength = (int)(samples.Count / shiftFactor);

            var shifted = new List<short>(newLength);

            for (int i = 0; i < newLength; i++)

            {

                double srcIndex = i * shiftFactor;

                int idx = (int)srcIndex;

                double frac = srcIndex - idx;

                double value = 0;

                if (idx + 1 < samples.Count)

                    value = (1 - frac) * samples[idx] + frac * samples[idx + 1];

                else if (idx < samples.Count)

                    value = samples[idx];

                short pcmVal = (short)(value * short.MaxValue);

                shifted.Add(pcmVal);

            }//for (int i = 0; i < newLength; i++)

            return shifted;

        }//public static List<short> ResampleWithFrequencyShift(List<double> samples, double shiftFactor)

        public static void WriteWavFile(string filePath, List<short> samples)

        {

            using (var stream = new FileStream(filePath, FileMode.Create))

            using (var writer = new BinaryWriter(stream))

            {

                int byteRate = SampleRate * Channels * BitsPerSample / 8;

                int dataSize = samples.Count * BitsPerSample / 8;

                // RIFF header

                writer.Write(Encoding.ASCII.GetBytes("RIFF"));

                writer.Write(36 + dataSize);

                writer.Write(Encoding.ASCII.GetBytes("WAVE"));

                // fmt subchunk

                writer.Write(Encoding.ASCII.GetBytes("fmt "));

                writer.Write(16); // PCM

                writer.Write((short)1); // AudioFormat = PCM

                writer.Write((short)Channels);

                writer.Write(SampleRate);

                writer.Write(byteRate);

                writer.Write((short)(Channels * BitsPerSample / 8));

                writer.Write((short)BitsPerSample);

                // data subchunk

                writer.Write(Encoding.ASCII.GetBytes("data"));

                writer.Write(dataSize);

                foreach (short s in samples)

                { writer.Write(s); }

            }//using (var writer = new BinaryWriter(stream))

        }//public static void WriteWavFile(string filePath, List<short> samples)

    }//public class WavGenerator___Reads_GTAMPS_MONO_8000_Hz_Samples_16_bits_no_3rd_party_apis

}//namespace SAAN_FRESH___RAW_NON_APIS_WAVES_TO_SHRUTIES_COPIER_GPTS