[C#/COMMON/NAUDIO/.NET5] RawSourceWaveStream 클래스 사용하기

■ RawSourceWaveStream 클래스를 사용하는 방법을 보여준다.

▶ 예제 코드 (C#)


using System;
using System.IO;
using System.Threading;

using NAudio.Wave;

int    sampleRate  = 16000;
int    frequency   = 500;
double amplitude   = 0.2;
int    secondCount = 5;

byte[] bufferByteArray = new byte[sampleRate * secondCount * 2];

double multiple = 2.0 * frequency / sampleRate;

for(int i = 0; i < sampleRate * secondCount; i++)
{
    double sampleSaw         = ((i * multiple) % 2) - 1;
    double sampleValueDouble = sampleSaw > 0 ? amplitude : -amplitude;
    short  sampleValueShort  = (short)(sampleValueDouble * short.MaxValue);

    byte[] sampleValueByteArray = BitConverter.GetBytes(sampleValueShort);

    bufferByteArray[i * 2    ] = sampleValueByteArray[0];
    bufferByteArray[i * 2 + 1] = sampleValueByteArray[1];
}

MemoryStream memoryStream = new MemoryStream(bufferByteArray);

RawSourceWaveStream rawSourceWaveStream = new RawSourceWaveStream
(
    memoryStream,
    new WaveFormat(sampleRate, 16, 1)
);

WaveOutEvent waveOutEvent = new WaveOutEvent();

waveOutEvent.Init(rawSourceWaveStream);

waveOutEvent.Play();

while(waveOutEvent.PlaybackState == PlaybackState.Playing)
{
    Thread.Sleep(500);
}

waveOutEvent.Dispose();

using System;

using System.IO;

using System.Threading;

using NAudio.Wave;

int sampleRate = 16000;

int frequency = 500;

double amplitude = 0.2;

int secondCount = 5;

byte[] bufferByteArray = new byte[sampleRate * secondCount * 2];

double multiple = 2.0 * frequency / sampleRate;

for(int i = 0; i < sampleRate * secondCount; i++)

{

double sampleSaw = ((i * multiple) % 2) - 1;

double sampleValueDouble = sampleSaw > 0 ? amplitude : -amplitude;

short sampleValueShort = (short)(sampleValueDouble * short.MaxValue);

byte[] sampleValueByteArray = BitConverter.GetBytes(sampleValueShort);

bufferByteArray[i * 2 ] = sampleValueByteArray[0];

bufferByteArray[i * 2 + 1] = sampleValueByteArray[1];

}

MemoryStream memoryStream = new MemoryStream(bufferByteArray);

RawSourceWaveStream rawSourceWaveStream = new RawSourceWaveStream

(

memoryStream,

new WaveFormat(sampleRate, 16, 1)

);

WaveOutEvent waveOutEvent = new WaveOutEvent();

waveOutEvent.Init(rawSourceWaveStream);

waveOutEvent.Play();

while(waveOutEvent.PlaybackState == PlaybackState.Playing)

{

Thread.Sleep(500);

}

waveOutEvent.Dispose();