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teensy-audio/include/audio/effect_freeverb.h

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  1. /* Audio Library for Teensy 3.X

  2.  * Copyright (c) 2018, Paul Stoffregen, paul@pjrc.com

  3.  *

  4.  * Development of this audio library was funded by PJRC.COM, LLC by sales of

  5.  * Teensy and Audio Adaptor boards.  Please support PJRC's efforts to develop

  6.  * open source software by purchasing Teensy or other PJRC products.

  7.  *

  8.  * Permission is hereby granted, free of charge, to any person obtaining a copy

  9.  * of this software and associated documentation files (the "Software"), to deal

  10.  * in the Software without restriction, including without limitation the rights

  11.  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

  12.  * copies of the Software, and to permit persons to whom the Software is

  13.  * furnished to do so, subject to the following conditions:

  14.  *

  15.  * The above copyright notice, development funding notice, and this permission

  16.  * notice shall be included in all copies or substantial portions of the Software.

  17.  *

  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  19.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  20.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

  21.  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  22.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

  23.  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

  24.  * THE SOFTWARE.

  25.  */

  26. 

  27. #ifndef effect_freeverb_h_

  28. #define effect_freeverb_h_

  29. #include <core/Arduino.h>

  30. #include <core/AudioStream.h>

  31. 

  32. class AudioEffectFreeverb : public AudioStream

  33. {

  34. public:

  35. 	AudioEffectFreeverb();

  36. 	virtual void update();

  37. 	void roomsize(float n) {

  38. 		if (n > 1.0f) n = 1.0f;

  39. 		else if (n < 0.0) n = 0.0f;

  40. 		combfeeback = (int)(n * 9175.04f) + 22937;

  41. 	}

  42. 	void damping(float n) {

  43. 		if (n > 1.0f) n = 1.0f;

  44. 		else if (n < 0.0) n = 0.0f;

  45. 		int x1 = (int)(n * 13107.2f);

  46. 		int x2 = 32768 - x1;

  47. 		__disable_irq();

  48. 		combdamp1 = x1;

  49. 		combdamp2 = x2;

  50. 		__enable_irq();

  51. 	}

  52. private:

  53. 	audio_block_t *inputQueueArray[1];

  54. 	int16_t comb1buf[1116];

  55. 	int16_t comb2buf[1188];

  56. 	int16_t comb3buf[1277];

  57. 	int16_t comb4buf[1356];

  58. 	int16_t comb5buf[1422];

  59. 	int16_t comb6buf[1491];

  60. 	int16_t comb7buf[1557];

  61. 	int16_t comb8buf[1617];

  62. 	uint16_t comb1index;

  63. 	uint16_t comb2index;

  64. 	uint16_t comb3index;

  65. 	uint16_t comb4index;

  66. 	uint16_t comb5index;

  67. 	uint16_t comb6index;

  68. 	uint16_t comb7index;

  69. 	uint16_t comb8index;

  70. 	int16_t comb1filter;

  71. 	int16_t comb2filter;

  72. 	int16_t comb3filter;

  73. 	int16_t comb4filter;

  74. 	int16_t comb5filter;

  75. 	int16_t comb6filter;

  76. 	int16_t comb7filter;

  77. 	int16_t comb8filter;

  78. 	int16_t combdamp1;

  79. 	int16_t combdamp2;

  80. 	int16_t combfeeback;

  81. 	int16_t allpass1buf[556];

  82. 	int16_t allpass2buf[441];

  83. 	int16_t allpass3buf[341];

  84. 	int16_t allpass4buf[225];

  85. 	uint16_t allpass1index;

  86. 	uint16_t allpass2index;

  87. 	uint16_t allpass3index;

  88. 	uint16_t allpass4index;

  89. };

  90. 

  91. 

  92. class AudioEffectFreeverbStereo : public AudioStream

  93. {

  94. public:

  95. 	AudioEffectFreeverbStereo();

  96. 	virtual void update();

  97. 	void roomsize(float n) {

  98. 		if (n > 1.0f) n = 1.0f;

  99. 		else if (n < 0.0) n = 0.0f;

  100. 		combfeeback = (int)(n * 9175.04f) + 22937;

  101. 	}

  102. 	void damping(float n) {

  103. 		if (n > 1.0f) n = 1.0f;

  104. 		else if (n < 0.0) n = 0.0f;

  105. 		int x1 = (int)(n * 13107.2f);

  106. 		int x2 = 32768 - x1;

  107. 		__disable_irq();

  108. 		combdamp1 = x1;

  109. 		combdamp2 = x2;

  110. 		__enable_irq();

  111. 	}

  112. private:

  113. 	audio_block_t *inputQueueArray[1];

  114. 	int16_t comb1bufL[1116];

  115. 	int16_t comb2bufL[1188];

  116. 	int16_t comb3bufL[1277];

  117. 	int16_t comb4bufL[1356];

  118. 	int16_t comb5bufL[1422];

  119. 	int16_t comb6bufL[1491];

  120. 	int16_t comb7bufL[1557];

  121. 	int16_t comb8bufL[1617];

  122. 	uint16_t comb1indexL;

  123. 	uint16_t comb2indexL;

  124. 	uint16_t comb3indexL;

  125. 	uint16_t comb4indexL;

  126. 	uint16_t comb5indexL;

  127. 	uint16_t comb6indexL;

  128. 	uint16_t comb7indexL;

  129. 	uint16_t comb8indexL;

  130. 	int16_t comb1filterL;

  131. 	int16_t comb2filterL;

  132. 	int16_t comb3filterL;

  133. 	int16_t comb4filterL;

  134. 	int16_t comb5filterL;

  135. 	int16_t comb6filterL;

  136. 	int16_t comb7filterL;

  137. 	int16_t comb8filterL;

  138. 	int16_t comb1bufR[1139];

  139. 	int16_t comb2bufR[1211];

  140. 	int16_t comb3bufR[1300];

  141. 	int16_t comb4bufR[1379];

  142. 	int16_t comb5bufR[1445];

  143. 	int16_t comb6bufR[1514];

  144. 	int16_t comb7bufR[1580];

  145. 	int16_t comb8bufR[1640];

  146. 	uint16_t comb1indexR;

  147. 	uint16_t comb2indexR;

  148. 	uint16_t comb3indexR;

  149. 	uint16_t comb4indexR;

  150. 	uint16_t comb5indexR;

  151. 	uint16_t comb6indexR;

  152. 	uint16_t comb7indexR;

  153. 	uint16_t comb8indexR;

  154. 	int16_t comb1filterR;

  155. 	int16_t comb2filterR;

  156. 	int16_t comb3filterR;

  157. 	int16_t comb4filterR;

  158. 	int16_t comb5filterR;

  159. 	int16_t comb6filterR;

  160. 	int16_t comb7filterR;

  161. 	int16_t comb8filterR;

  162. 	int16_t combdamp1;

  163. 	int16_t combdamp2;

  164. 	int16_t combfeeback;

  165. 	int16_t allpass1bufL[556];

  166. 	int16_t allpass2bufL[441];

  167. 	int16_t allpass3bufL[341];

  168. 	int16_t allpass4bufL[225];

  169. 	uint16_t allpass1indexL;

  170. 	uint16_t allpass2indexL;

  171. 	uint16_t allpass3indexL;

  172. 	uint16_t allpass4indexL;

  173. 	int16_t allpass1bufR[579];

  174. 	int16_t allpass2bufR[464];

  175. 	int16_t allpass3bufR[364];

  176. 	int16_t allpass4bufR[248];

  177. 	uint16_t allpass1indexR;

  178. 	uint16_t allpass2indexR;

  179. 	uint16_t allpass3indexR;

  180. 	uint16_t allpass4indexR;

  181. };

  182. 

  183. 

  184. #endif