The program sounds well.
We need 128 buffer size in this case.
I change the base source code for that.
.\main.cpp Thu Jun 24 17:42:20 2021
...
138 :int main(int argc, char** argv) {
139 :
140 : sound_000a = new SoundEffect( sbuffer, 128, 2200 );
141 : sound_000a->Play();
142 :
143 : return 0;
144 :}
...
.\sounds-011.h Thu Jun 24 17:41:54 2021
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22 : SoundEffect(const int noteInfo[], int fix_Arraysize, const int VALHZ)
23 : {
24 : // Initialize the sound format we will request from sound card
25 : m_waveFormat.wFormatTag = WAVE_FORMAT_PCM; // Uncompressed sound format
26 : m_waveFormat.nChannels = 1; // 1 = Mono, 2 = Stereo
27 : m_waveFormat.wBitsPerSample = 8; // Bits per sample per channel
28 : m_waveFormat.nSamplesPerSec = VALHZ; // Sample Per Second
29 :// m_waveFormat.nSamplesPerSec = 11025; // Sample Per Second
30 : m_waveFormat.nBlockAlign = m_waveFormat.nChannels * m_waveFormat.wBitsPerSample / 8;
31 : m_waveFormat.nAvgBytesPerSec = m_waveFormat.nSamplesPerSec * m_waveFormat.nBlockAlign;
32 : m_waveFormat.cbSize = 0;
33 :
34 :
35 : const int ramda = 8;
36 : int count_v = 0;
37 :
38 : int dataLength = 0, moment = (m_waveFormat.nSamplesPerSec / 75);
39 : double period = 2.0 * PI / (double) m_waveFormat.nSamplesPerSec;
40 :
41 : // Calculate how long we need the sound buffer to be
42 : for (int i = 1; i < fix_Arraysize; i += 2)
43 : dataLength += (noteInfo[i] != 0) ? noteInfo[i] * moment : moment;
44 :
45 : // Allocate the array
46 : m_data = new char[m_bufferSize = dataLength];
47 :
48 : int placeInData = 0;
49 :
50 : // Make the sound buffer
51 : for (int i = 0; i < fix_Arraysize; i += 2)
52 : {
53 : int relativePlaceInData = placeInData;
54 :
55 : while ((relativePlaceInData - placeInData) < ((noteInfo[i + 1] != 0) ? noteInfo[i + 1] * moment : moment))
56 : {
57 : // Generate the sound wave (as a sinusoid)
58 : // - x will have a range of -1 to +1
59 : double x = sin((relativePlaceInData - placeInData) * 55 * pow(HALF_NOTE, noteInfo[i]) * period);
60 :
61 : count_v = relativePlaceInData % ramda;
62 :
63 : // Scale x to a range of 0-255 (signed char) for 8 bit sound reproduction
64 : m_data[relativePlaceInData] = (char) (127 * x + 128);
65 : m_data[relativePlaceInData] /= ramda;
66 : m_data[relativePlaceInData] *= count_v;
67 :
68 : relativePlaceInData++;
69 : }
70 :
71 : placeInData = relativePlaceInData;
72 : }
73 : }
...
