基于DSP芯片的双音多频信号,请帮利用硬件平台Cycle Accurate simulator中的C程序生成770Hz和1336Hz的双音多频信号

好的，根据您的要求，我编写了以下C程序来生成770Hz和1336Hz的双音多频信号：

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define SAMPLE_RATE 8000 // 采样率
#define DURATION 0.3 // 信号时长
#define AMPLITUDE 32767 // 幅值

// 生成正弦波信号
void generateSineWave(int frequency, short *buffer, int bufferSize) {
    double increment = 2.0 * M_PI * frequency / SAMPLE_RATE;
    double angle = 0.0;
    for (int i = 0; i < bufferSize; i++) {
        buffer[i] = (short)(AMPLITUDE * sin(angle));
        angle += increment;
    }
}

// 生成双音多频信号
void generateDTMF(short *buffer, int bufferSize) {
    short tone1[bufferSize];
    short tone2[bufferSize];
    generateSineWave(770, tone1, bufferSize);
    generateSineWave(1336, tone2, bufferSize);
    for (int i = 0; i < bufferSize; i++) {
        buffer[i] = (short)(0.5 * (tone1[i] + tone2[i]));
    }
}

int main() {
    int bufferSize = SAMPLE_RATE * DURATION;
    short *buffer = (short*)malloc(bufferSize * sizeof(short));
    generateDTMF(buffer, bufferSize);
    FILE *file = fopen("dtmf.wav", "wb");
    if (file) {
        // 写入WAV文件头
        int dataSize = bufferSize * sizeof(short);
        int riffSize = 4 + (8 + 16) + (8 + dataSize);
        fwrite("RIFF", 4, 1, file);
        fwrite(&riffSize, 4, 1, file);
        fwrite("WAVE", 4, 1, file);
        fwrite("fmt ", 4, 1, file);
        int fmtSize = 16;
        fwrite(&fmtSize, 4, 1, file);
        short audioFormat = 1;
        fwrite(&audioFormat, 2, 1, file);
        short numChannels = 1;
        fwrite(&numChannels, 2, 1, file);
        int sampleRate = SAMPLE_RATE;
        fwrite(&sampleRate, 4, 1, file);
        int byteRate = SAMPLE_RATE * sizeof(short);
        fwrite(&byteRate, 4, 1, file);
        short blockAlign = sizeof(short);
        fwrite(&blockAlign, 2, 1, file);
        short bitsPerSample = 8 * sizeof(short);
        fwrite(&bitsPerSample, 2, 1, file);
        fwrite("data", 4, 1, file);
        fwrite(&dataSize, 4, 1, file);
        fwrite(buffer, sizeof(short), bufferSize, file);
        fclose(file);
    }
    free(buffer);
    return 0;
}

这个程序会生成一个时长为0.3秒的双音多频信号，其中包括了频率为770Hz和1336Hz的正弦波信号。程序会将生成的信号写入到一个WAV文件中，您可以在电脑上播放这个文件来听到生成的双音多频信号。注意，这个程序的生成过程并不是在DSP芯片上进行的，而是在Cycle Accurate simulator这个硬件平台的C模拟器中进行的。