不韋 呂 / Mbed 2 deprecated UIT2_VowelSynthesizer

Vowel synthesizer using digital resonators. This program can run without LCD display. ディジタル共振器を使った合成母音ジェネレータ．LCD表示器なしでも動く．

Dependencies:   UITDSP_ADDA UIT_ACM1602NI UIT_AQM1602 mbed

main.cpp@5:0396de26b449, 2015-07-25 (annotated)

Committer:
MikamiUitOpen
Date:
Sat Jul 25 07:10:11 2015 +0000
Revision:
5:0396de26b449
Parent:
4:dd2ec72068d0 
6

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:6c67a9387981 1 //------------------------------------------------------------
MikamiUitOpen 5:0396de26b449 2 // ディジタル共振器を使った母音発生器
MikamiUitOpen 0:6c67a9387981 3 // sw: 1, 2, 3, 4, 5 => /a/, /i/, /u/, /e/, /o/
MikamiUitOpen 0:6c67a9387981 4 // sw: 0 => Without resonator
MikamiUitOpen 5:0396de26b449 5 // スイッチを切り替えてから Nucleo ボードのユーザボタン（青色）を
MikamiUitOpen 5:0396de26b449 6 // 押すと違う合成母音が発生する．
MikamiUitOpen 5:0396de26b449 7 // 母音の基本周波数は VR で変えられる（合成母音の音が出ている最中
MikamiUitOpen 5:0396de26b449 8 // でも変えられる）
MikamiUitOpen 5:0396de26b449 9 //
MikamiUitOpen 5:0396de26b449 10 // 2015/07/25, Copyright (c) 2015 MIKAMI, Naoki
MikamiUitOpen 0:6c67a9387981 11 //------------------------------------------------------------
MikamiUitOpen 0:6c67a9387981 12
MikamiUitOpen 5:0396de26b449 13 #include "ADC_BuiltIn.hpp" // for ADC not using interrupt
MikamiUitOpen 5:0396de26b449 14 #include "DAC_MCP4921.hpp" // for DAC MCP4921, MCP4922
MikamiUitOpen 0:6c67a9387981 15 #include "ACM1602NI.hpp" // for LCD display
MikamiUitOpen 0:6c67a9387981 16 #include "Rosenberg.hpp" // Glottal source
MikamiUitOpen 0:6c67a9387981 17 #include "Resonator.hpp" // Resonator corresponding to vocal tract
MikamiUitOpen 0:6c67a9387981 18 #include "Radiator.hpp" // Radiator from mouth
MikamiUitOpen 5:0396de26b449 19 using namespace Mikami;
MikamiUitOpen 5:0396de26b449 20
MikamiUitOpen 5:0396de26b449 21 // ACM1602Ni を使う場合は次の define 文をコメントにすること
MikamiUitOpen 5:0396de26b449 22 #define AQM1602
MikamiUitOpen 0:6c67a9387981 23
MikamiUitOpen 5:0396de26b449 24 #ifdef AQM1602
MikamiUitOpen 5:0396de26b449 25 #include "AQM1602.hpp"
MikamiUitOpen 5:0396de26b449 26 Aqm1602 Lcd_;
MikamiUitOpen 5:0396de26b449 27 #else
MikamiUitOpen 5:0396de26b449 28 #include "ACM1602NI.hpp"
MikamiUitOpen 5:0396de26b449 29 Acm1602Ni Lcd_;
MikamiUitOpen 5:0396de26b449 30 #endif
MikamiUitOpen 0:6c67a9387981 31
MikamiUitOpen 0:6c67a9387981 32 const int FS_ = 8000; // Sampling frequency: 8 kHz
MikamiUitOpen 5:0396de26b449 33 ADC_BuiltIn adc_(A2, FS_); // for AD
MikamiUitOpen 5:0396de26b449 34 DAC_MCP4921 myDac_; // for DA
MikamiUitOpen 5:0396de26b449 35
MikamiUitOpen 5:0396de26b449 36 DigitalIn uButton_(USER_BUTTON);
MikamiUitOpen 5:0396de26b449 37 BusIn busSw_(D2, D3, D4, D5);
MikamiUitOpen 0:6c67a9387981 38
MikamiUitOpen 0:6c67a9387981 39 const int N_VWL_ = 5; // 母音の種類の数
MikamiUitOpen 0:6c67a9387981 40 const int N_RSN_ = 3; // 共振器の数
MikamiUitOpen 0:6c67a9387981 41
MikamiUitOpen 0:6c67a9387981 42 // フォルマント周波数，帯域幅のデータ：{周波数, 帯域幅}
MikamiUitOpen 0:6c67a9387981 43 const Resonator::FrBw c_[N_VWL_][N_RSN_] =
MikamiUitOpen 0:6c67a9387981 44 {{ {654, 50}, {1060, 55}, {2375, 60} }, // ア
MikamiUitOpen 0:6c67a9387981 45 { {302, 40}, {2057, 60}, {3034, 65} }, // イ
MikamiUitOpen 0:6c67a9387981 46 { {375, 45}, {1208, 55}, {2165, 60} }, // ウ
MikamiUitOpen 0:6c67a9387981 47 { {541, 50}, {1784, 60}, {2452, 60} }, // エ
MikamiUitOpen 0:6c67a9387981 48 { {458, 45}, { 807, 50}, {2379, 60} }}; // オ
MikamiUitOpen 0:6c67a9387981 49
MikamiUitOpen 0:6c67a9387981 50 int main()
MikamiUitOpen 0:6c67a9387981 51 {
MikamiUitOpen 0:6c67a9387981 52 // 基本周波数の可変範囲を決める定数（100 ～ 180 Hz の範囲）
MikamiUitOpen 0:6c67a9387981 53 const float F0_COEF = 50.0f/4095.0f; // 範囲を決める定数
MikamiUitOpen 0:6c67a9387981 54 const float F0_MIN = 100.0f; // 最低の基本周波数
MikamiUitOpen 0:6c67a9387981 55
MikamiUitOpen 5:0396de26b449 56 Rosenberg g(100, FS_, 2.5f); // 声帯波発生用オブジェクト初期化
MikamiUitOpen 0:6c67a9387981 57 // 基本周波数：100 Hz
MikamiUitOpen 0:6c67a9387981 58 Resonator rs[N_RSN_]; // 共振器用オブジェクト配列の宣言
MikamiUitOpen 0:6c67a9387981 59 Radiator rd; // 放射の効果用オブジェクトの初期化
MikamiUitOpen 0:6c67a9387981 60
MikamiUitOpen 0:6c67a9387981 61 myDac_.ScfClockTim3(336000); // cutoff frequency: 3.36 kHz
MikamiUitOpen 0:6c67a9387981 62
MikamiUitOpen 5:0396de26b449 63 busSw_.mode(PullDown);
MikamiUitOpen 5:0396de26b449 64 Lcd_.Clear();
MikamiUitOpen 5:0396de26b449 65 Lcd_.WriteStringXY("Synthetic Vowel", 0, 0);
MikamiUitOpen 1:aab9254a774d 66
MikamiUitOpen 0:6c67a9387981 67 while (true)
MikamiUitOpen 0:6c67a9387981 68 {
MikamiUitOpen 5:0396de26b449 69 int sw = busSw_.read();
MikamiUitOpen 5:0396de26b449 70 if (sw > 5) sw = 5;
MikamiUitOpen 5:0396de26b449 71
MikamiUitOpen 5:0396de26b449 72 char str[4] = {'/', 0xB0+sw, '/', NULL};
MikamiUitOpen 5:0396de26b449 73 Lcd_.WriteStringXY(str, 0, 1); // -ｱｲｳｴｵ
MikamiUitOpen 5:0396de26b449 74
MikamiUitOpen 5:0396de26b449 75 // 共振器の準備
MikamiUitOpen 5:0396de26b449 76 if (sw > 0)
MikamiUitOpen 5:0396de26b449 77 for (int k=0; k<N_RSN_; k++)
MikamiUitOpen 5:0396de26b449 78 rs[k] = Resonator(c_[sw-1][k], FS_);
MikamiUitOpen 5:0396de26b449 79
MikamiUitOpen 5:0396de26b449 80 for (int n=0; n<4000; n++)
MikamiUitOpen 0:6c67a9387981 81 {
MikamiUitOpen 0:6c67a9387981 82 uint16_t adVal = adc_.Read_u16(); // Read from A2
MikamiUitOpen 0:6c67a9387981 83 float f0 = adVal*F0_COEF + F0_MIN;
MikamiUitOpen 0:6c67a9387981 84 g.SetPeriod(f0); // 基本周波数を設定
MikamiUitOpen 0:6c67a9387981 85
MikamiUitOpen 0:6c67a9387981 86 //-----------------------------------------------
MikamiUitOpen 5:0396de26b449 87 // ここで合成母音を発生している
MikamiUitOpen 0:6c67a9387981 88 float vn = g.Execute(); // 合成声帯波発生
MikamiUitOpen 0:6c67a9387981 89 if (sw != 0)
MikamiUitOpen 0:6c67a9387981 90 for (int k=0; k<N_RSN_; k++)
MikamiUitOpen 0:6c67a9387981 91 vn = rs[k].Execute(vn); // 声道の効果
MikamiUitOpen 0:6c67a9387981 92 float yn = rd.Execute(vn); // 放射の効果
MikamiUitOpen 0:6c67a9387981 93 //-----------------------------------------------
MikamiUitOpen 5:0396de26b449 94
MikamiUitOpen 2:6a0a8374b4ee 95 myDac_.Write(yn); // Write to DAC
MikamiUitOpen 0:6c67a9387981 96 }
MikamiUitOpen 5:0396de26b449 97
MikamiUitOpen 5:0396de26b449 98 // ユーザボタンが押されるまで待つ
MikamiUitOpen 5:0396de26b449 99 while (uButton_ == 1) {}
MikamiUitOpen 5:0396de26b449 100 Lcd_.ClearLine(1);
MikamiUitOpen 5:0396de26b449 101 }
MikamiUitOpen 0:6c67a9387981 102 }