seiichi horie / Mbed 2 deprecated synthesizer_f746

Synthesizer based on the Unzen / Nucleo F746ZG

Dependencies:   amakusa mbed-dsp mbed shimabara ukifune unzen_nucleo_f746

Fork of skeleton_unzen_nucleo_f746 by seiichi horie

雲仙フレームワークのテストとして作っているプロジェクトです。中身はどんどん変っていきます。 説明はDSP空挺団の「シンセサイザー」カテゴリーを参照してください。初回は「ドッグフードを食べる」です。

monophonic.cpp@26:e99f71165e19, 2017-02-10 (annotated)

Committer:
shorie
Date:
Fri Feb 10 21:31:17 2017 +0000
Revision:
26:e99f71165e19
Parent:
22:dc2cbe8db9d9
Child:
27:fcb1f1da2ad7
fulfill change

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shorie 18:b9b1116f8768 1 #include "signal_processing.h"
shorie 18:b9b1116f8768 2
shorie 18:b9b1116f8768 3
shorie 18:b9b1116f8768 4 // constructor.
shorie 18:b9b1116f8768 5 Monophonic::Monophonic( unsigned int block_size )
shorie 18:b9b1116f8768 6 {
shorie 18:b9b1116f8768 7 // initializing the subm-odules.
shorie 26:e99f71165e19 8 this->vfo = new VFO(block_size); // allocate VFO
shorie 20:53021b2c424d 9 this->dc_blocker = new DCBlocker( block_size );
shorie 20:53021b2c424d 10 this->sv_filter = new SVFilter( block_size );
shorie 26:e99f71165e19 11 // this->eg = new EG( block_size );
shorie 20:53021b2c424d 12
shorie 20:53021b2c424d 13 work_buf_a = new float32_t[block_size];
shorie 20:53021b2c424d 14 work_buf_b = new float32_t[block_size];
shorie 26:e99f71165e19 15
shorie 26:e99f71165e19 16 this->block_size = block_size;
shorie 18:b9b1116f8768 17 } // End of constructor()
shorie 18:b9b1116f8768 18
shorie 18:b9b1116f8768 19 Monophonic::~Monophonic( void )
shorie 18:b9b1116f8768 20 {
shorie 18:b9b1116f8768 21 // initializing the subm-odules.
shorie 18:b9b1116f8768 22 delete this->vfo;
shorie 20:53021b2c424d 23 delete this->dc_blocker;
shorie 20:53021b2c424d 24 delete this->sv_filter;
shorie 26:e99f71165e19 25 // delete this->eg;
shorie 20:53021b2c424d 26
shorie 20:53021b2c424d 27 delete[] work_buf_a;
shorie 20:53021b2c424d 28 delete[] work_buf_b;
shorie 18:b9b1116f8768 29 } // End of constructor()
shorie 18:b9b1116f8768 30
shorie 18:b9b1116f8768 31
shorie 18:b9b1116f8768 32
shorie 18:b9b1116f8768 33 // Run all signal processing.
shorie 18:b9b1116f8768 34 void Monophonic::run(
shorie 26:e99f71165e19 35 float out_buffer[] // place to write the right output samples
shorie 18:b9b1116f8768 36 )
shorie 18:b9b1116f8768 37 {
shorie 18:b9b1116f8768 38 // place the signal processing coce here
shorie 26:e99f71165e19 39 this->vfo->run( work_buf_a );
shorie 22:dc2cbe8db9d9 40
shorie 22:dc2cbe8db9d9 41 // blocking DC.
shorie 22:dc2cbe8db9d9 42 this->dc_blocker->run( work_buf_a, work_buf_b );
shorie 18:b9b1116f8768 43
shorie 22:dc2cbe8db9d9 44 // applying filter.
shorie 22:dc2cbe8db9d9 45 this->sv_filter->run( work_buf_b, out_buffer );
shorie 18:b9b1116f8768 46
shorie 26:e99f71165e19 47 // generate envelope
shorie 26:e99f71165e19 48 // this->eg->run( work_buf_a );
shorie 26:e99f71165e19 49
shorie 26:e99f71165e19 50 // apply envelope
shorie 26:e99f71165e19 51 // for ( int i= 0; i< this->block_size; i++ )
shorie 26:e99f71165e19 52 // out_buffer[ i ] *= work_buf_a[ i ];
shorie 26:e99f71165e19 53
shorie 18:b9b1116f8768 54 } // End of run()
shorie 18:b9b1116f8768 55
shorie 18:b9b1116f8768 56
shorie 18:b9b1116f8768 57 // Sampling Frequency
shorie 18:b9b1116f8768 58 void Monophonic::set_Fs( int Fs )
shorie 18:b9b1116f8768 59 {
shorie 18:b9b1116f8768 60 this->vfo->set_Fs( Fs );
shorie 22:dc2cbe8db9d9 61 this->sv_filter->set_Fs( Fs );
shorie 18:b9b1116f8768 62 }
shorie 18:b9b1116f8768 63
shorie 18:b9b1116f8768 64 // Oscillation Frequency
shorie 18:b9b1116f8768 65 void Monophonic::set_vfo_frequency( int freq )
shorie 18:b9b1116f8768 66 {
shorie 18:b9b1116f8768 67 this->vfo->set_frequency( freq );
shorie 22:dc2cbe8db9d9 68 this->sv_filter->set_fc( freq );
shorie 18:b9b1116f8768 69 }
shorie 18:b9b1116f8768 70
shorie 18:b9b1116f8768 71 // Duty Cycle of VFO
shorie 18:b9b1116f8768 72 void Monophonic::set_vfo_duty_cycle( float duty )
shorie 18:b9b1116f8768 73 {
shorie 18:b9b1116f8768 74 this->vfo->set_duty_cycle( duty );
shorie 18:b9b1116f8768 75 }
shorie 18:b9b1116f8768 76
shorie 18:b9b1116f8768 77 // VFO wave form
shorie 18:b9b1116f8768 78 void Monophonic::set_vfo_wave_form( wave_form form )
shorie 18:b9b1116f8768 79 {
shorie 18:b9b1116f8768 80 this->vfo->set_wave_form( form );
shorie 18:b9b1116f8768 81 }
shorie 22:dc2cbe8db9d9 82
shorie 22:dc2cbe8db9d9 83 // SVF filter mode.
shorie 22:dc2cbe8db9d9 84 void Monophonic::set_filter_mode( svf_mode mode )
shorie 22:dc2cbe8db9d9 85 {
shorie 22:dc2cbe8db9d9 86 this->sv_filter->set_mode( mode );
shorie 22:dc2cbe8db9d9 87 }
shorie 22:dc2cbe8db9d9 88
shorie 22:dc2cbe8db9d9 89 // SVF Q factor
shorie 22:dc2cbe8db9d9 90 void Monophonic::set_filter_Q( float Q )
shorie 22:dc2cbe8db9d9 91 {
shorie 22:dc2cbe8db9d9 92 this->sv_filter->set_Q( Q );
shorie 22:dc2cbe8db9d9 93 }
shorie 22:dc2cbe8db9d9 94
shorie 26:e99f71165e19 95 // Set the f_factor value.
shorie 22:dc2cbe8db9d9 96 void Monophonic::set_filter_f_factor( float f_factor )
shorie 22:dc2cbe8db9d9 97 {
shorie 22:dc2cbe8db9d9 98 this->sv_filter->set_f_factor( f_factor );
shorie 22:dc2cbe8db9d9 99 }
shorie 26:e99f71165e19 100
shorie 26:e99f71165e19 101 // Turn note on
shorie 26:e99f71165e19 102 void Monophonic::eg_on(void)
shorie 26:e99f71165e19 103 {
shorie 26:e99f71165e19 104 // this->eg->on();
shorie 26:e99f71165e19 105 }
shorie 26:e99f71165e19 106
shorie 26:e99f71165e19 107 // Turn note off
shorie 26:e99f71165e19 108 void Monophonic::eg_off(void)
shorie 26:e99f71165e19 109 {
shorie 26:e99f71165e19 110 // this->eg->off();
shorie 26:e99f71165e19 111 }
shorie 26:e99f71165e19 112
shorie 26:e99f71165e19 113 void Monophonic::set_eg_attack( float32_t attack )
shorie 26:e99f71165e19 114 {
shorie 26:e99f71165e19 115 // this->eg->set_attack( attack );
shorie 26:e99f71165e19 116 }
shorie 26:e99f71165e19 117 void Monophonic::set_eg_decay( float32_t decay )
shorie 26:e99f71165e19 118 {
shorie 26:e99f71165e19 119 // this->eg->set_decay( decay );
shorie 26:e99f71165e19 120 }
shorie 26:e99f71165e19 121
shorie 26:e99f71165e19 122 void Monophonic::set_eg_sustain( float32_t sustain )
shorie 26:e99f71165e19 123 {
shorie 26:e99f71165e19 124 // this->eg->set_sustain( sustain );
shorie 26:e99f71165e19 125 }
shorie 26:e99f71165e19 126
shorie 26:e99f71165e19 127 void Monophonic::set_eg_release ( float32_t release )
shorie 26:e99f71165e19 128 {
shorie 26:e99f71165e19 129 // this->eg->set_release( release );
shorie 26:e99f71165e19 130 }
shorie 26:e99f71165e19 131