Samples of bufferSize = 512 on iOS:

[0.0166742969, 0.0181432627, 0.0184620395, 0.0182254426, 0.0181945376, 0.0185530782, 0.0192517322, 0.0199078992, 0.0204724055, 0.0212812237, 0.022370765, 0.0230008475, 0.0225516111, 0.0213304944, 0.0200473778, 0.019841563, 0.0206818394, 0.0211550407, 0.0207783803, 0.020227218, 0.0199668743, 0.0204207543, 0.0212149825, 0.0206389967, 0.0187880248, 0.0167767145, 0.0150565384, 0.01393665, 0.0129076103, 0.0122165764, 0.0126033062, 0.0133863436, 0.0136517091, 0.0134775555, 0.0128802266, 0.0110962093, 0.00905595906, 0.00834821165, 0.00822720397, 0.008329398, 0.00930604525, 0.0108533269, 0.0116535304, 0.0108615728, 0.00948433205, 0.00845594145, 0.0073993206, 0.00526688294, 0.00247669267, 0.00111255911, 0.00186654506, 0.00393201364, 0.00605870783, 0.00728464406, 0.00758164795, 0.00741813984, 0.0070983395, 0.00691324845, 0.00665103039, 0.00544488989, 0.00439271377, 0.00472383248, 0.00460877642, 0.0031108777, 0.00130207348, 2.82817055e-05, -0.000548420125, -0.000275739003, 0.000828514865, 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Samples of bufferSize = 512 on Python:

[ -52.  -32.  -11.   10.   24.   31.   37.   38.   33.   25.   10.   -4.
  -18.  -26.  -29.  -39.  -42.  -39.  -29.  -11.   11.   32.   45.   56.
   60.   67.   66.   59.   54.   42.   33.   33.   36.   35.   32.   22.
   10.   -8.  -30.  -49.  -64.  -72.  -78.  -81.  -71.  -59.  -44.  -25.
   -8.   -1.    3.    7.   10.   12.   17.   18.   14.    0.  -22.  -44.
  -65.  -90. -118. -143. -167. -191. -201. -197. -187. -167. -145. -128.
 -113.  -98.  -91.  -87.  -87.  -89.  -93.  -92.  -94. -102. -108. -118.
 -124. -130. -144. -156. -161. -162. -156. -135.  -99.  -57.  -10.   37.
   76.  104.  124.  137.  139.  136.  129.  125.  132.  142.  153.  164.
  165.  161.  151.  133.  107.   82.   66.   63.   77.  111.  150.  194.
  235.  261.  280.  291.  286.  268.  247.  219.  186.  154.  130.  111.
   93.   73.   54.   33.   18.    9.    0.  -11.  -13.  -10.    1.   26.
   57.   91.  120.  138.  134.  111.   83.   51.   14.  -19.  -55.  -85.
 -103. -112. -114. -116. -130. -145. -164. -183. -186. -181. -162. -130.
  -95.  -61.  -27.   -4.   16.   30.   31.   30.   19.    4.  -11.  -30.
  -38.  -44.  -50.  -55.  -65.  -75.  -85.  -84.  -74.  -65.  -54.  -37.
  -18.    4.   34.   63.   84.   87.   68.   35.    0.  -30.  -50.  -71.
  -90. -102. -110. -110.  -99.  -84.  -76.  -66.  -55.  -47.  -29.  -11.
    3.   19.   30.   33.   31.   32.   33.   35.   33.   17.   -3.  -22.
  -32.  -31.  -25.  -24.  -27.  -25.  -23.  -14.   -3.   -1.   -3.  -11.
  -20.  -21.  -23.  -19.  -18.  -21.  -30.  -42.  -60.  -83. -101. -115.
 -123. -129. -127. -124. -114.  -98.  -79.  -56.  -32.   -7.   15.   37.
   63.   97.  119.  130.  132.  118.   98.   80.   60.   43.   28.   14.
    1.  -11.  -19.  -19.   -7.    8.   22.   37.   47.   60.   72.   87.
  100.   99.   92.   85.   80.   73.   68.   62.   57.   47.   35.   25.
   16.   10.    7.    7.    8.   14.   23.   33.   42.   52.   60.   67.
   79.   89.   92.   87.   76.   61.   43.   15.  -15.  -45.  -72.  -97.
 -116. -129. -136. -138. -138. -135. -132. -124. -116. -112. -107. -108.
 -112. -117. -125. -138. -146. -156. -163. -165. -162. -152. -142. -127.
 -113. -100.  -79.  -56.  -33.   -5.   16.   34.   57.   77.  101.  124.
  137.  146.  150.  150.  150.  158.  170.  181.  189.  192.  185.  175.
  163.  140.  117.  102.   97.  111.  139.  181.  219.  251.  276.  291.
  303.  311.  313.  304.  281.  255.  226.  206.  190.  183.  178.  174.
  168.  164.  162.  160.  155.  145.  131.  123.  128.  132.  139.  147.
  143.  127.   97.   61.   35.   15.   -3.  -18.  -35.  -51.  -56.  -59.
  -61.  -75.  -99. -128. -157. -177. -189. -190. -182. -167. -151. -135.
 -124. -113. -109. -118. -131. -145. -158. -162. -165. -173. -175. -179.
 -180. -170. -163. -157. -152. -151. -148. -143. -132. -115.  -92.  -70.
  -54.  -58.  -81. -117. -151. -169. -183. -193. -200. -212. -210. -192.
 -163. -132. -107.  -96.  -97.  -96.  -92.  -84.  -71.  -60.  -49.  -42.
  -40.  -32.  -18.   -6.   -3.   -6.  -19.  -31.  -42.  -50.  -56.  -51.
  -43.  -39.  -32.  -27.  -26.  -29.  -39.  -50.  -65.  -80.  -89.  -88.
  -83.  -73.  -74.  -83.  -93. -111. -134. -156.]