使用指导：访问NAO (脑) 扩音器的声音数据

要访问扩音器收集的声音数据时，您必须声明一个回调函数。根据模块类型，即本地（作为动态库编译）或远程（remote,作为可执行档编译），选择"processSound"或"processSoundRemote"。如果您的模块为远程模块，还需绑定该方法。这个函数由AudioDevice模块调用。包含扩音器声音数据的缓冲区会被定期发送至该方法。

 
                        // Example for a local module (dynamic library) :
                        void MyModule::processSound( const int pNbOfInputChannels, const int pNbrSamples, const signed short *pDataInterleaved)
                        {
                          // pNbOfInputChannels is the number of channels contained in the input buffer (actual value : 4)
                          // pNbrSamples is the number of samples per channel
                          // pDataInterleaved is a pointer to the buffer containing the samples. The buffer contained 16 bits interleaved samples, that's to say that he  
                          // contains s1m1,s1m2,s1m3,s1m4,s2m1,s2m2, ... where simj is the sample number i of microphone j
                          // The order of microphones is as follow : 1 : left microphone / 2 : right microphone / 3 : front microphone / 4 : rear microphone 
                        
                          // Make your signal processing here
                          // Note : An example of how to desinterleave samples is provided in the example source code
                        }


                         
                        // Example for a remote module (executable) :
                        void MyModule::processSoundRemote( const int &pNbOfInputChannels, const int &pNbrSamples, const AL::ALValue &pDataInterleaved)
                        {
                          // pNbOfInputChannels is the number of channels contained in the input buffer (actual value : 4)
                          // pNbrSamples is the number of samples per channel
                          // pDataInterleaved is a pointer to the buffer containing the samples. The buffer contained 16 bits interleaved samples, that's to say that he  
                          // contains s1m1,s1m2,s1m3,s1m4,s2m1,s2m2, ... where simj is the sample number i of microphone j
                          // The order of microphones is as follow : 1 : left microphone / 2 : right microphone / 3 : front microphone / 4 : rear microphone 
                        
                          // Make your signal processing here 
                          // Note : An example of how to desinterleave samples is provided in the example source code
                          // 
                        }

如上所述，对于远程模块，您必须在类的构造函数里绑定"processSoundRemote"这一方法。


                        functionName("processSoundRemote", getName(), "processSoundRemote");
                        addParam("pNbOfInputChannels", "Number of input channels");
                        addParam("pNbrSamples", "Number of samples per channel");
                        addParam("pDataInterleaved", "buffer containing the samples");
                        BIND_METHOD(MyModule::processSoundRemote)

运行处理过程

由于您的模块继承自ALSoundExtractor类，因此您需要调用其subscribe()方法来运行处理过程。

<< 上一页

下一页 >>