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@28:547f19ed6f67, 2017-02-11 (annotated)

Committer:
shorie
Date:
Sat Feb 11 07:44:56 2017 +0000
Revision:
28:547f19ed6f67
Parent:
27:fcb1f1da2ad7
Child:
29:8ee84bda128c
13 tone is ready to play

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 27:fcb1f1da2ad7 5 Monophonic::Monophonic( unsigned int a_block_size )
shorie 18:b9b1116f8768 6 {
shorie 27:fcb1f1da2ad7 7 this->block_size = a_block_size;
shorie 27:fcb1f1da2ad7 8
shorie 18:b9b1116f8768 9 // initializing the subm-odules.
shorie 26:e99f71165e19 10 this->vfo = new VFO(block_size); // allocate VFO
shorie 27:fcb1f1da2ad7 11 this->dc_blocker = new DCBlocker( this->block_size );
shorie 27:fcb1f1da2ad7 12 this->sv_filter = new SVFilter( this->block_size );
shorie 27:fcb1f1da2ad7 13 this->eg = new EG( this->block_size );
shorie 20:53021b2c424d 14
shorie 20:53021b2c424d 15 work_buf_a = new float32_t[block_size];
shorie 20:53021b2c424d 16 work_buf_b = new float32_t[block_size];
shorie 26:e99f71165e19 17
shorie 18:b9b1116f8768 18 } // End of constructor()
shorie 18:b9b1116f8768 19
shorie 18:b9b1116f8768 20 Monophonic::~Monophonic( void )
shorie 18:b9b1116f8768 21 {
shorie 18:b9b1116f8768 22 // initializing the subm-odules.
shorie 18:b9b1116f8768 23 delete this->vfo;
shorie 20:53021b2c424d 24 delete this->dc_blocker;
shorie 20:53021b2c424d 25 delete this->sv_filter;
shorie 27:fcb1f1da2ad7 26 delete this->eg;
shorie 20:53021b2c424d 27
shorie 20:53021b2c424d 28 delete[] work_buf_a;
shorie 20:53021b2c424d 29 delete[] work_buf_b;
shorie 18:b9b1116f8768 30 } // End of constructor()
shorie 18:b9b1116f8768 31
shorie 18:b9b1116f8768 32
shorie 18:b9b1116f8768 33
shorie 18:b9b1116f8768 34 // Run all signal processing.
shorie 18:b9b1116f8768 35 void Monophonic::run(
shorie 26:e99f71165e19 36 float out_buffer[] // place to write the right output samples
shorie 18:b9b1116f8768 37 )
shorie 18:b9b1116f8768 38 {
shorie 18:b9b1116f8768 39 // place the signal processing coce here
shorie 26:e99f71165e19 40 this->vfo->run( work_buf_a );
shorie 22:dc2cbe8db9d9 41
shorie 22:dc2cbe8db9d9 42 // blocking DC.
shorie 22:dc2cbe8db9d9 43 this->dc_blocker->run( work_buf_a, work_buf_b );
shorie 18:b9b1116f8768 44
shorie 22:dc2cbe8db9d9 45 // applying filter.
shorie 22:dc2cbe8db9d9 46 this->sv_filter->run( work_buf_b, out_buffer );
shorie 18:b9b1116f8768 47
shorie 26:e99f71165e19 48 // generate envelope
shorie 27:fcb1f1da2ad7 49 this->eg->run( work_buf_a );
shorie 26:e99f71165e19 50
shorie 26:e99f71165e19 51 // apply envelope
shorie 27:fcb1f1da2ad7 52 for ( int i= 0; i< this->block_size; i++ )
shorie 27:fcb1f1da2ad7 53 out_buffer[ i ] *= work_buf_a[ i ];
shorie 26:e99f71165e19 54
shorie 18:b9b1116f8768 55 } // End of run()
shorie 18:b9b1116f8768 56
shorie 18:b9b1116f8768 57
shorie 18:b9b1116f8768 58 // Sampling Frequency
shorie 18:b9b1116f8768 59 void Monophonic::set_Fs( int Fs )
shorie 18:b9b1116f8768 60 {
shorie 18:b9b1116f8768 61 this->vfo->set_Fs( Fs );
shorie 22:dc2cbe8db9d9 62 this->sv_filter->set_Fs( Fs );
shorie 18:b9b1116f8768 63 }
shorie 18:b9b1116f8768 64
shorie 18:b9b1116f8768 65 // Oscillation Frequency
shorie 28:547f19ed6f67 66 void Monophonic::set_vfo_frequency( float freq )
shorie 18:b9b1116f8768 67 {
shorie 18:b9b1116f8768 68 this->vfo->set_frequency( freq );
shorie 22:dc2cbe8db9d9 69 this->sv_filter->set_fc( freq );
shorie 18:b9b1116f8768 70 }
shorie 18:b9b1116f8768 71
shorie 18:b9b1116f8768 72 // Duty Cycle of VFO
shorie 18:b9b1116f8768 73 void Monophonic::set_vfo_duty_cycle( float duty )
shorie 18:b9b1116f8768 74 {
shorie 18:b9b1116f8768 75 this->vfo->set_duty_cycle( duty );
shorie 18:b9b1116f8768 76 }
shorie 18:b9b1116f8768 77
shorie 18:b9b1116f8768 78 // VFO wave form
shorie 18:b9b1116f8768 79 void Monophonic::set_vfo_wave_form( wave_form form )
shorie 18:b9b1116f8768 80 {
shorie 18:b9b1116f8768 81 this->vfo->set_wave_form( form );
shorie 18:b9b1116f8768 82 }
shorie 22:dc2cbe8db9d9 83
shorie 22:dc2cbe8db9d9 84 // SVF filter mode.
shorie 22:dc2cbe8db9d9 85 void Monophonic::set_filter_mode( svf_mode mode )
shorie 22:dc2cbe8db9d9 86 {
shorie 22:dc2cbe8db9d9 87 this->sv_filter->set_mode( mode );
shorie 22:dc2cbe8db9d9 88 }
shorie 22:dc2cbe8db9d9 89
shorie 22:dc2cbe8db9d9 90 // SVF Q factor
shorie 22:dc2cbe8db9d9 91 void Monophonic::set_filter_Q( float Q )
shorie 22:dc2cbe8db9d9 92 {
shorie 22:dc2cbe8db9d9 93 this->sv_filter->set_Q( Q );
shorie 22:dc2cbe8db9d9 94 }
shorie 22:dc2cbe8db9d9 95
shorie 26:e99f71165e19 96 // Set the f_factor value.
shorie 22:dc2cbe8db9d9 97 void Monophonic::set_filter_f_factor( float f_factor )
shorie 22:dc2cbe8db9d9 98 {
shorie 22:dc2cbe8db9d9 99 this->sv_filter->set_f_factor( f_factor );
shorie 22:dc2cbe8db9d9 100 }
shorie 26:e99f71165e19 101
shorie 26:e99f71165e19 102 // Turn note on
shorie 26:e99f71165e19 103 void Monophonic::eg_on(void)
shorie 26:e99f71165e19 104 {
shorie 27:fcb1f1da2ad7 105 this->eg->on();
shorie 26:e99f71165e19 106 }
shorie 26:e99f71165e19 107
shorie 26:e99f71165e19 108 // Turn note off
shorie 26:e99f71165e19 109 void Monophonic::eg_off(void)
shorie 26:e99f71165e19 110 {
shorie 27:fcb1f1da2ad7 111 this->eg->off();
shorie 26:e99f71165e19 112 }
shorie 26:e99f71165e19 113
shorie 26:e99f71165e19 114 void Monophonic::set_eg_attack( float32_t attack )
shorie 26:e99f71165e19 115 {
shorie 27:fcb1f1da2ad7 116 this->eg->set_attack( attack );
shorie 26:e99f71165e19 117 }
shorie 26:e99f71165e19 118 void Monophonic::set_eg_decay( float32_t decay )
shorie 26:e99f71165e19 119 {
shorie 27:fcb1f1da2ad7 120 this->eg->set_decay( decay );
shorie 26:e99f71165e19 121 }
shorie 26:e99f71165e19 122
shorie 26:e99f71165e19 123 void Monophonic::set_eg_sustain( float32_t sustain )
shorie 26:e99f71165e19 124 {
shorie 27:fcb1f1da2ad7 125 this->eg->set_sustain( sustain );
shorie 26:e99f71165e19 126 }
shorie 26:e99f71165e19 127
shorie 26:e99f71165e19 128 void Monophonic::set_eg_release ( float32_t release )
shorie 26:e99f71165e19 129 {
shorie 27:fcb1f1da2ad7 130 this->eg->set_release( release );
shorie 26:e99f71165e19 131 }
shorie 26:e99f71165e19 132