AhoLib: Fichero Fuente vad.h

00001 
00002 
00021 #include <stdio.h>
00022 #include <cassert>
00023 #include "xfft.h"
00024 #include "uti.h"
00025 #include "xalloc.h"
00026 #include "cbuffer.h"
00027 
00028 
00029 
00397 class vad
00398 {
00399 
00400 
00401 public:
00403 
00404     struct vad_config
00405     {
00406         public:
00407     
00410         //\{
00411         DOUBLE SNR0;                
00412         DOUBLE SNR1;                
00413         INT ActWindowLen;           
00414         FLOAT Nalfa;                
00415         FLOAT SNRalfa;              
00416         //\}
00417         
00420         //\{
00421         INT LTWindowLen;            
00422         DOUBLE gamma0;              
00423         DOUBLE gamma1;              
00424         INT Handover;               
00425         DOUBLE offset;              
00426                                     //Permite modificar el punto de trabajo
00427         //\}
00428         
00429         public:
00430         
00432 
00436         inline
00437         vad_config()
00438         {
00439             SNR0 = 10.0;
00440             SNR1 = 80.0;
00441             ActWindowLen = 6;
00442             Nalfa = 0.99;
00443             SNRalfa = 0.99;
00444             LTWindowLen = 13;
00445             gamma0 = 15.0;
00446             gamma1 = 40.0;
00447             Handover = 0;
00448             offset = 0.0;
00449         }
00450     };
00451     
00452 public:
00454 
00458     inline
00459     vad()
00460     : m_fftObject(NULL), m_NoiseFFT(NULL), m_NoiseFFTAct(NULL), m_LTSE(NULL)
00461     /*Deben iniciarse los punteros a NULL para que el Reset() no tenga problemas*/
00462     { }
00464 
00467     inline
00468     vad (const vad_config & cfg, DOUBLE snr, FLOAT FrameLen, XFFT_WIN WinType)
00469     : m_fftObject(NULL), m_NoiseFFT(NULL), m_NoiseFFTAct(NULL), m_LTSE(NULL)
00470     /*Deben iniciarse los punteros a NULL para que el Reset() no tenga problemas*/
00471     { Reset(cfg, FrameLen, WinType); }
00472 
00474 
00478     inline
00479     vad (const vad_config & cfg, DOUBLE snr, FLOAT FrameLen)
00480     : m_fftObject(NULL), m_NoiseFFT(NULL), m_NoiseFFTAct(NULL), m_LTSE(NULL)
00481     /*Deben iniciarse los punteros a NULL para que el Reset() no tenga problemas*/
00482     { Reset(cfg, snr, FrameLen); }
00483     
00485     inline
00486     ~vad()
00487     { Destruct(); }
00488     
00490     bool
00491     Reset (const vad_config & cfg, DOUBLE snr, FLOAT FrameLen, XFFT_WIN WinType = XFFT_WIN_HAMM);
00492     
00494     void
00495     NoiseInit (pDOUBLE frame);
00496 
00497     
00499     bool
00500     doVAD (pDOUBLE frame);
00501     
00502     
00508 //\{
00509     
00511     inline
00512     LONG
00513     getFrameLen () const
00514     { return m_FrameLen; }
00515     
00517 
00523     inline
00524     INT
00525     getNfft () const
00526     { return m_Nfft; }
00527 
00528     
00530     inline
00531     INT
00532     getLTWindowLen () const
00533     { return m_LTWindowLen; }
00534 
00536 
00540     inline
00541     bool
00542     IsBufferFull () const
00543     { return (m_bufferedFrames >= (m_LTWindowLen-1)/2); }
00544     
00546     inline
00547     DOUBLE
00548     getNoisePow () const
00549     { return m_NoisePow; }
00550     
00551     inline
00552     void
00553     setNoisePow (DOUBLE np)
00554     { m_NoisePow = np; }
00555     
00557     inline
00558     DOUBLE
00559     getSignalPow () const
00560     { return m_SignalPow; }
00561 
00562     inline
00563     void
00564     setSignalPow (DOUBLE sp)
00565     { m_SignalPow = sp; }
00566     
00568     inline
00569     DOUBLE
00570     getSNR () const
00571     { return m_SNR; }
00572 
00577     inline
00578     void
00579     setSNR (DOUBLE snr)
00580     { m_SNR = snr; }
00581 
00583     inline
00584     DOUBLE
00585     getSNR0 () const
00586     { return m_SNR0; }
00587 
00588     inline
00589     void
00590     setSNR0 (DOUBLE snr0)
00591     { m_SNR0 = snr0; }
00592     
00594     inline
00595     DOUBLE
00596     getSNR1 () const
00597     { return m_SNR1; }
00598 
00599     inline
00600     void
00601     setSNR1 (DOUBLE snr1)
00602     { m_SNR1 = snr1; }
00603     
00605     inline
00606     DOUBLE
00607     getGamma0 () const
00608     { return m_gamma0; }
00609 
00610     inline
00611     void
00612     setGamma0 (DOUBLE gamma0)
00613     { m_gamma0 = gamma0; }
00614     
00616     inline
00617     DOUBLE
00618     getGamma1 () const
00619     { return m_gamma1; }
00620 
00621     inline
00622     void
00623     setGamma1 (DOUBLE gamma1)
00624     { m_gamma1 = gamma1; }
00625     
00627     inline
00628     INT
00629     getActWindowLen () const
00630     { return m_ActWindowLen; }
00631 
00632     inline
00633     void
00634     setActWindowLen (INT ActWindowLen)
00635     { assert ((m_LTWindowLen-1/2) >= ActWindowLen);
00636       m_ActWindowLen = ActWindowLen; }
00637 
00639     inline
00640     FLOAT
00641     getNalfa () const
00642     { return m_Nalfa; }
00643 
00644     inline
00645     void
00646     setNalfa (FLOAT Nalfa)
00647     { m_Nalfa = Nalfa; }
00648     
00650     inline
00651     FLOAT
00652     getSNRalfa () const
00653     { return m_SNRalfa; }
00654 
00655     inline
00656     void
00657     setSNRalfa (FLOAT SNRalfa)
00658     { m_SNRalfa = SNRalfa; }
00659     
00661     inline
00662     DOUBLE
00663     getOffset () const
00664     { return m_offset; }
00665 
00666     inline
00667     void
00668     setOffset (DOUBLE offset)
00669     { m_offset = offset; }
00670     
00672     inline
00673     INT
00674     getHandover () const
00675     { return m_Handover; }
00676 
00677     inline
00678     void
00679     setHandover (INT Handover)
00680     { m_Handover = Handover; }
00681     
00682 //\}
00683 
00684         
00685         
00686         
00687 protected:
00688         
00690     void
00691     Destruct();
00692     
00694     DOUBLE
00695     Gamma() const;
00696     
00698     void
00699     ActualizeSignal();
00700     
00702     void
00703     ActualizeNoise();
00704     
00706     void
00707     AddToBuffer (pDOUBLE frame);
00708     
00710     void
00711     LTSE ();
00712     
00714     DOUBLE
00715     LTSD () const;
00716 
00717     
00718 protected:
00719         
00722 //\{
00723     LONG m_FrameLen;            
00724     XFFT_WIN m_WinType;         
00725     pRFFT m_fftObject;          
00726     INT m_Nfft;                 
00727     buffer2D m_memFFT;          
00728                                 //Tendrá LTWindowLen elementos
00729     INT m_bufferedFrames;       
00730 //\}
00731 
00734 //\{
00735     pDOUBLE m_NoiseFFT;         
00736     INT m_NoiseInitFrames;      
00737     DOUBLE m_NoisePow;          
00738     DOUBLE m_SignalPow;         
00739     DOUBLE m_SNR;               
00740     DOUBLE m_SNR0;              
00741     DOUBLE m_SNR1;              
00742     INT m_ActWindowLen;         
00743     FLOAT m_Nalfa;              
00744     FLOAT m_SNRalfa;            
00745     pDOUBLE m_NoiseFFTAct;      
00746                                 //Si hago que se reserve memoria en la inicialización, adelantamos trabajo
00747 //\}
00748 
00751 //\{
00752     INT m_LTWindowLen;          
00753     DOUBLE m_gamma0;            
00754     DOUBLE m_gamma1;            
00755     INT m_Handover;             
00756     LONG m_NumSil;              
00757     LONG m_NumVoice;            
00758     LONG m_HoSil;               
00759     DOUBLE m_offset;            
00760                                 //Permite modificar el punto de trabajo
00761     pDOUBLE m_LTSE;             
00762                                 //Si hago que se reserve memoria en la inicialización, adelantamos trabajo
00763 //\}
00764 
00765 };
00766