有人能够做出
http://www.surina.net/soundtouch/
为iPhone工作?
简单的Xcode演示会有所帮助。
我只想通过一些音调操纵来发挥音效。
谢谢
克里斯
最佳答案
使用SoundTouch来实现音频效果的最佳方法是也使用SoundStretch。
您可以从这里下载两者的源代码http://www.surina.net/soundtouch/sourcecode.html
使用示例:
NSArray *effects = [NSArray arrayWithObjects:@"-rate=-22", nil];
NSURL *audio = [self base:input output:output effects:effects];
其中base:output:effects
定义为:- (NSURL *)base:(NSURL *)input output:(NSURL *)output effects:(NSArray *)effects{
int _argc = 3 + (int)[effects count];
const char *_argv[]={"createWavWithEffect",[[input path] UTF8String], [[output path] UTF8String],[@"" UTF8String],[@"" UTF8String],[@"" UTF8String],[@"" UTF8String],[@"" UTF8String],[@"" UTF8String],[@"" UTF8String],[@"" UTF8String],[@"" UTF8String]};
for (int i=0; i<[effects count]; i++) {
_argv[i+3] = [effects[i] UTF8String];
}
createWavWithEffect(_argc, _argv);
// IMPORTANT! Check the file size, maybe you will need to set by yourself
return output;
}
如果您不想自己编译SoundTouch,我已经与GitHub存储库共享了一个GitHub存储库,该库针对armv7
,armv7s
,arm64
,i386
和x86_64
进行了编译https://github.com/enrimr/soundtouch-ios-library
而且,如果您想不使用SoundStretch就自己使用SoundTouch,则必须在Xcode项目中添加SoundTouch目录(包括libSoundTouch.a和带标题的目录)。
对于SWIFT项目:
使用SWIFT进行编程,您无法导入.h,因此您需要创建一个名为
<Your-Project-Name>-Bridging-Header-File.h
的.h文件然后在您的项目build设置中引用它(在“Swift Compiler”下查找“Objective C Bridging Header”),其中包括:
$(SRCROOT)/<Your-Project-Name>-Bridging-Header.h
现在,您必须能够使用SoundTouch类。对于Objective-C项目:
包括以下行
#include "SoundTouch.h"
在您的 Controller 文件中。createWavWithEffect
的实现:int createWavWithEffect(const int nParams, const char * const paramStr[])
{
WavInFile *inFile;
WavOutFile *outFile;
RunParameters *params;
SoundTouch soundTouch;
fprintf(stderr, _helloText, SoundTouch::getVersionString());
try
{
// Parse command line parameters
params = new RunParameters(nParams, paramStr);
// Open input & output files
openFiles(&inFile, &outFile, params);
if (params->detectBPM == TRUE)
{
// detect sound BPM (and adjust processing parameters
// accordingly if necessary)
detectBPM(inFile, params);
}
// Setup the 'SoundTouch' object for processing the sound
setup(&soundTouch, inFile, params);
// clock_t cs = clock(); // for benchmarking processing duration
// Process the sound
process(&soundTouch, inFile, outFile);
// clock_t ce = clock(); // for benchmarking processing duration
// printf("duration: %lf\n", (double)(ce-cs)/CLOCKS_PER_SEC);
// Close WAV file handles & dispose of the objects
delete inFile;
delete outFile;
delete params;
fprintf(stderr, "Done!\n");
}
catch (const runtime_error &e)
{
// An exception occurred during processing, display an error message
fprintf(stderr, "%s\n", e.what());
return -1;
}
return 0;
}
关于iphone - 适用于iPhone的Soundtouch,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/2258113/