00001 #ifndef INCLUDE_OSCILLATOR_H 00002 #define INCLUDE_OSCILLATOR_H 00003 /* 00004 * This is the Loris C++ Class Library, implementing analysis, 00005 * manipulation, and synthesis of digitized sounds using the Reassigned 00006 * Bandwidth-Enhanced Additive Sound Model. 00007 * 00008 * Loris is Copyright (c) 1999-2010 by Kelly Fitz and Lippold Haken 00009 * 00010 * This program is free software; you can redistribute it and/or modify 00011 * it under the terms of the GNU General Public License as published by 00012 * the Free Software Foundation; either version 2 of the License, or 00013 * (at your option) any later version. 00014 * 00015 * This program is distributed in the hope that it will be useful, 00016 * but WITHOUT ANY WARRANTY, without even the implied warranty of 00017 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00018 * GNU General Public License for more details. 00019 * 00020 * You should have received a copy of the GNU General Public License 00021 * along with this program; if not, write to the Free Software 00022 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00023 * 00024 * 00025 * Oscillator.h 00026 * 00027 * Definition of class Loris::Oscillator, a Bandwidth-Enhanced Oscillator. 00028 * 00029 * Kelly Fitz, 31 Aug 1999 00030 * loris@cerlsoundgroup.org 00031 * 00032 * http://www.cerlsoundgroup.org/Loris/ 00033 * 00034 */ 00035 00036 #include "NoiseGenerator.h" 00037 #include "Filter.h" 00038 00039 // begin namespace 00040 namespace Loris { 00041 00042 class Breakpoint; 00043 00044 // --------------------------------------------------------------------------- 00045 // class Oscillator 00046 // 00056 // 00057 class Oscillator 00058 { 00059 // --- implementation --- 00060 00061 NoiseGenerator m_modulator; 00062 Filter m_filter; 00063 00064 // instantaneous oscillator state: 00065 double m_instfrequency; 00066 double m_instamplitude; 00067 double m_instbandwidth; 00068 00069 // accumulating phase state: 00070 double m_determphase; 00071 00072 // --- interface --- 00073 public: 00074 // --- construction --- 00075 00077 Oscillator( void ); 00078 00079 // Copy, assignment, and destruction are free. 00080 // 00081 // Copied and assigned Oscillators have the duplicate state 00082 // variables and the filters have the same coefficients, 00083 // but the state of the filter delay lines is not copied. 00084 00085 // --- oscillation --- 00086 00091 void resetEnvelopes( const Breakpoint & bp, double srate ); 00092 00097 void setPhase( double ph ); 00098 00106 void oscillate( double * begin, double * end, 00107 const Breakpoint & bp, double srate ); 00108 00109 // --- accessors --- 00110 00112 double amplitude( void ) const { return m_instamplitude; } 00113 00115 double bandwidth( void ) const { return m_instbandwidth; } 00116 00118 double phase( void ) const { return m_determphase; } 00119 00121 double radianFreq( void ) const { return m_instfrequency; } 00122 00125 Filter & filter( void ) { return m_filter; } 00126 00127 // --- static members --- 00128 00132 static const Filter & prototype_filter( void ); 00133 00134 }; // end of class Oscillator 00135 00136 } // end of namespace Loris 00137 00138 #endif /* ndef INCLUDE_OSCILLATOR_H */
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