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| // 假设有一个名为 "floatArray" 的 float 数组和 "arrayLength" 表示数组长度 | |
| NSString *filePath = @"/path/to/file.wav"; // 指定保存 WAV 文件的路径 | |
| // 打开文件用于写入 | |
| NSOutputStream *outputStream = [NSOutputStream outputStreamToFileAtPath:filePath append:NO]; | |
| [outputStream open]; | |
| // 构建 WAV 文件头信息 | |
| // WAV 文件头的具体格式请根据需要进行调整，以下示例仅提供基本结构 | |
| // 更多关于 WAV 文件格式的信息可以参考相应的规范 | |
| // WAV 文件头信息 | |
| struct { | |
| char chunkID[4]; | |
| uint32_t chunkSize; | |
| char format[4]; | |
| char subchunk1ID[4]; | |
| uint32_t subchunk1Size; | |
| uint16_t audioFormat; | |
| uint16_t numChannels; | |
| uint32_t sampleRate; | |
| uint32_t byteRate; | |
| uint16_t blockAlign; | |
| uint16_t bitsPerSample; | |
| char subchunk2ID[4]; | |
| uint32_t subchunk2Size; | |
| } wavHeader; | |
| // 填充 WAV 文件头信息 | |
| memcpy(wavHeader.chunkID, "RIFF", 4); | |
| wavHeader.chunkSize = sizeof(wavHeader) - 8 + arrayLength * sizeof(float); | |
| memcpy(wavHeader.format, "WAVE", 4); | |
| memcpy(wavHeader.subchunk1ID, "fmt ", 4); | |
| wavHeader.subchunk1Size = 16; | |
| wavHeader.audioFormat = 3; // IEEE float | |
| wavHeader.numChannels = 1; // 单声道 | |
| wavHeader.sampleRate = 44100; // 采样率 | |
| wavHeader.byteRate = wavHeader.sampleRate * sizeof(float); | |
| wavHeader.blockAlign = sizeof(float); | |
| wavHeader.bitsPerSample = sizeof(float) * 8; | |
| memcpy(wavHeader.subchunk2ID, "data", 4); | |
| wavHeader.subchunk2Size = arrayLength * sizeof(float); | |
| // 写入 WAV 文件头 | |
| [outputStream write:(const uint8_t *)&wavHeader maxLength:sizeof(wavHeader)]; | |
| // 将 float 数组的内容写入文件 | |
| [outputStream write:(const uint8_t *)floatArray maxLength:arrayLength * sizeof(float)]; | |
| // 关闭文件写入器 | |
| [outputStream close]; |
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