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
Rosenberg.hpp@4:dd2ec72068d0, 2014-12-17 (annotated)
- Committer:
- MikamiUitOpen
- Date:
- Wed Dec 17 08:22:30 2014 +0000
- Revision:
- 4:dd2ec72068d0
- Parent:
- 0:6c67a9387981
5
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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MikamiUitOpen | 0:6c67a9387981 | 1 | //------------------------------------------------------------------------------ |
MikamiUitOpen | 0:6c67a9387981 | 2 | // 声帯波の合成 ― Rosenberg 波(ヘッダ) |
MikamiUitOpen | 0:6c67a9387981 | 3 | // 作成者:三上直樹,2013/10/27 作成,(c)三上直樹 2013 |
MikamiUitOpen | 0:6c67a9387981 | 4 | //------------------------------------------------------------------------------ |
MikamiUitOpen | 0:6c67a9387981 | 5 | |
MikamiUitOpen | 0:6c67a9387981 | 6 | #include "mbed.h" |
MikamiUitOpen | 0:6c67a9387981 | 7 | |
MikamiUitOpen | 0:6c67a9387981 | 8 | #ifndef ROSENBERG_HPP |
MikamiUitOpen | 0:6c67a9387981 | 9 | #define ROSENBERGL_HPP |
MikamiUitOpen | 0:6c67a9387981 | 10 | |
MikamiUitOpen | 0:6c67a9387981 | 11 | namespace Mikami |
MikamiUitOpen | 0:6c67a9387981 | 12 | { |
MikamiUitOpen | 0:6c67a9387981 | 13 | class Rosenberg |
MikamiUitOpen | 0:6c67a9387981 | 14 | { |
MikamiUitOpen | 0:6c67a9387981 | 15 | private: |
MikamiUitOpen | 0:6c67a9387981 | 16 | const float DT_; |
MikamiUitOpen | 0:6c67a9387981 | 17 | |
MikamiUitOpen | 0:6c67a9387981 | 18 | float period_, t1_, t2_, t_, amp_; |
MikamiUitOpen | 0:6c67a9387981 | 19 | |
MikamiUitOpen | 0:6c67a9387981 | 20 | // コピー・コンストラクタの使用禁止 |
MikamiUitOpen | 0:6c67a9387981 | 21 | Rosenberg(const Rosenberg& g); |
MikamiUitOpen | 0:6c67a9387981 | 22 | // 代入演算子の使用禁止 |
MikamiUitOpen | 0:6c67a9387981 | 23 | Rosenberg& operator=(const Rosenberg& g); |
MikamiUitOpen | 0:6c67a9387981 | 24 | |
MikamiUitOpen | 0:6c67a9387981 | 25 | public: |
MikamiUitOpen | 0:6c67a9387981 | 26 | // 初期化を行うコンストラクタ |
MikamiUitOpen | 0:6c67a9387981 | 27 | // f0: 基本周波数 |
MikamiUitOpen | 0:6c67a9387981 | 28 | // fs: 標本化周波数 |
MikamiUitOpen | 0:6c67a9387981 | 29 | // amp: 振幅 |
MikamiUitOpen | 0:6c67a9387981 | 30 | Rosenberg(float f0, float fs, float amp) |
MikamiUitOpen | 0:6c67a9387981 | 31 | : DT_(1.0f/fs), t_(0), amp_(amp) |
MikamiUitOpen | 0:6c67a9387981 | 32 | { SetPeriod(f0); } |
MikamiUitOpen | 0:6c67a9387981 | 33 | |
MikamiUitOpen | 0:6c67a9387981 | 34 | // 基本周期の再設定 |
MikamiUitOpen | 0:6c67a9387981 | 35 | void SetPeriod(float f0) |
MikamiUitOpen | 0:6c67a9387981 | 36 | { |
MikamiUitOpen | 0:6c67a9387981 | 37 | period_ = 1.0f/f0; |
MikamiUitOpen | 0:6c67a9387981 | 38 | t1_ = 0.4f/f0; |
MikamiUitOpen | 0:6c67a9387981 | 39 | t2_ = 0.16f/f0; |
MikamiUitOpen | 0:6c67a9387981 | 40 | } |
MikamiUitOpen | 0:6c67a9387981 | 41 | |
MikamiUitOpen | 0:6c67a9387981 | 42 | // 振幅の再設定 |
MikamiUitOpen | 0:6c67a9387981 | 43 | void SetAmplitude(float amp) { amp_ = amp; } |
MikamiUitOpen | 0:6c67a9387981 | 44 | |
MikamiUitOpen | 0:6c67a9387981 | 45 | // t_ = 0 に設定 |
MikamiUitOpen | 0:6c67a9387981 | 46 | void Reset() { t_ = 0; } |
MikamiUitOpen | 0:6c67a9387981 | 47 | |
MikamiUitOpen | 0:6c67a9387981 | 48 | // Rosengerg 波の計算 |
MikamiUitOpen | 0:6c67a9387981 | 49 | // amp: 振幅 |
MikamiUitOpen | 0:6c67a9387981 | 50 | float Execute() |
MikamiUitOpen | 0:6c67a9387981 | 51 | { |
MikamiUitOpen | 0:6c67a9387981 | 52 | float g = 0; |
MikamiUitOpen | 0:6c67a9387981 | 53 | |
MikamiUitOpen | 0:6c67a9387981 | 54 | if (t_ < t1_) |
MikamiUitOpen | 0:6c67a9387981 | 55 | { |
MikamiUitOpen | 0:6c67a9387981 | 56 | float x = t_/t1_; |
MikamiUitOpen | 0:6c67a9387981 | 57 | g = amp_*(3.0f - 2.0f*x)*x*x; |
MikamiUitOpen | 0:6c67a9387981 | 58 | } |
MikamiUitOpen | 0:6c67a9387981 | 59 | if ((t_ >= t1_) && (t_ < t1_+t2_)) |
MikamiUitOpen | 0:6c67a9387981 | 60 | { |
MikamiUitOpen | 0:6c67a9387981 | 61 | float x = (t_ - t1_)/t2_; |
MikamiUitOpen | 0:6c67a9387981 | 62 | g = amp_*(1.0f - x*x); |
MikamiUitOpen | 0:6c67a9387981 | 63 | } |
MikamiUitOpen | 0:6c67a9387981 | 64 | |
MikamiUitOpen | 0:6c67a9387981 | 65 | if ((t_+=DT_) > period_) t_ -= period_; |
MikamiUitOpen | 0:6c67a9387981 | 66 | |
MikamiUitOpen | 0:6c67a9387981 | 67 | return g; |
MikamiUitOpen | 0:6c67a9387981 | 68 | } |
MikamiUitOpen | 0:6c67a9387981 | 69 | }; |
MikamiUitOpen | 0:6c67a9387981 | 70 | } |
MikamiUitOpen | 0:6c67a9387981 | 71 | #endif // ROSENBERG_HPP |