title: how much THD do I expect on a 32 bits float sine waveform?
body: <p>I'm using a stm32f411 uC to generate a sine wave using cmsis dsp libary
  The sine waveform is used to feed an audiocodec by I2S inteface
  I notice so much harmonics on the analog output f the codec
  I thiking on how much THD do my waveform have
  thank</p>
  
  <p>EDIT the sine wave form is the one on Cmsis dsp library
  <a href="https://github.com/mikeferguson/stm32/blob/master/libraries/CMSIS/DSP_Lib/FastMathFunctions/arm_sin_f32.c" rel="nofollow">https://github.com/mikeferguson/stm32/blob/master/libraries/CMSIS/DSP_Lib/FastMathFunctions/arm_sin_f32.c</a>
  I just need the harmonics added by digital sine waveform
  I'm thinking on create an array of sine values created from that function and analize it on matlab</p>