예제 #1
0
		/// <summary>
		/// Initializes the object and generates a wave.
		/// </summary>
		/// <param name="type">The type of wave to generate</param>
		public WaveGenerator(WaveExampleType type, int frequency, double volume)
		{
			// Init chunks
			header = new WaveHeader();
			format = new WaveFormatChunk();
			data = new WaveDataChunk();

			// Number of samples = sample rate * channels * bytes per sample
			uint numSamples = format.dwSamplesPerSec * format.wChannels;

			// Initialize the 16-bit array
			data.shortArray = new short[numSamples];
			data.shortArrayLength = numSamples;

			// Calculate data chunk size in bytes and store it in the data chunk
			data.dwChunkSize = (uint)(numSamples * (format.wBitsPerSample / 8));

			// Max amplitude for 16-bit audio
			int amplitude = (int)(MAX_AMPLITUDE_16BIT * volume);

			// Create a double version of the frequency for easier math
			double freq = (double)frequency;

			// The "angle" used in the function, adjusted for the number of channels and sample rate.
			// This value is like the period of the wave.
			double t = (Math.PI * 2 * freq) / (format.dwSamplesPerSec * format.wChannels);



			// Fill the data array with sample data

			if (type == WaveExampleType.ExampleSineWave)
			{
				ExampleSineWave(numSamples, amplitude, t);
				return;
			}

			if (type == WaveExampleType.ExampleSquareWave)
			{
				ExampleSquareWave(numSamples, amplitude, t);
				return;
			}

			if (type == WaveExampleType.ExampleWhiteNoise)
			{
				ExampleWhiteNoise(numSamples, amplitude);
				return;
			}

			if (type == WaveExampleType.ExampleSawtoothWave)
			{
				ExampleSawtoothWave(frequency, numSamples, amplitude);
				return;
			}


			if (type == WaveExampleType.ExampleTriangleWave)
			{
				ExampleTriangleWave(frequency, numSamples, amplitude);

				return;
			}




		}
예제 #2
0
        /// <summary>
        /// Initializes the object and generates a wave.
        /// </summary>
        /// <param name="type">The type of wave to generate</param>
        public WaveGenerator(WaveExampleType type, int frequency, double volume)
        {
            // Init chunks
            header = new WaveHeader();
            format = new WaveFormatChunk();
            data   = new WaveDataChunk();

            // Number of samples = sample rate * channels * bytes per sample
            uint numSamples = format.dwSamplesPerSec * format.wChannels;

            // Initialize the 16-bit array
            data.shortArray       = new short[numSamples];
            data.shortArrayLength = numSamples;

            // Calculate data chunk size in bytes and store it in the data chunk
            data.dwChunkSize = (uint)(numSamples * (format.wBitsPerSample / 8));

            // Max amplitude for 16-bit audio
            int amplitude = (int)(MAX_AMPLITUDE_16BIT * volume);

            // Create a double version of the frequency for easier math
            double freq = (double)frequency;

            // The "angle" used in the function, adjusted for the number of channels and sample rate.
            // This value is like the period of the wave.
            double t = (Math.PI * 2 * freq) / (format.dwSamplesPerSec * format.wChannels);



            // Fill the data array with sample data

            if (type == WaveExampleType.ExampleSineWave)
            {
                ExampleSineWave(numSamples, amplitude, t);
                return;
            }

            if (type == WaveExampleType.ExampleSquareWave)
            {
                ExampleSquareWave(numSamples, amplitude, t);
                return;
            }

            if (type == WaveExampleType.ExampleWhiteNoise)
            {
                ExampleWhiteNoise(numSamples, amplitude);
                return;
            }

            if (type == WaveExampleType.ExampleSawtoothWave)
            {
                ExampleSawtoothWave(frequency, numSamples, amplitude);
                return;
            }


            if (type == WaveExampleType.ExampleTriangleWave)
            {
                ExampleTriangleWave(frequency, numSamples, amplitude);

                return;
            }
        }