<div dir="ltr"><div>Dear all.</div><div><br></div><div>According with my question. </div><div><br></div><div>CELT CFFT size configuration</div><div><br></div><div>I'm not completely sure about how the kiss_fft works for sizes which are not power of two, as occur in the case of celt which calculate the mdct using a fft sizes of 480, 240, 120, and 60, I guess that internally the input data is padded with zeros in order to compute efficiently the mdct using the Cooley and Tukey algorithm. </div><div><br></div><div>If I'm correct. Means that technically, I could compute the fft using the padding strategy and adjust the output such as kissfft done, someone could confirm if that is possible. </div><div><br></div><div>thanks </div><div>cheers</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Apr 12, 2017 at 2:27 PM, Diego Alejandro Parra Guzman <span dir="ltr"><<a href="mailto:daparrag@correo.udistrital.edu.co" target="_blank">daparrag@correo.udistrital.edu.co</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Dear all,</div><div><br></div><div>Sorry for this simple and maybe stupid question, I'm working in the implementation of opus for ARMv7e microcontroller using a library CMSIS/DSP used to calculate the CFFT and MDCT based on the DCT-IV. my question is:</div><div><br></div><div><br></div><div>In the implementation of Celt you have used a fixed length CFFT equal to 1920, I want to know if there is some issues which can appear if a change that configuration for a cfft of size 2048, some of you could give me some support about that?, I ask because the library which I'm using doesn't support 1920 size.</div><div><br></div><div>please let me know, I you need I could be more specific. </div><div><br></div><div>thanks you so much. <br clear="all"><span class="HOEnZb"><font color="#888888"><br>-- <br></font></span></div><span class="HOEnZb"><font color="#888888"><div class="m_2885577703089944201gmail_signature">Diego Alejandro Parra Guzmán<br>Estudiante de ingeniería electrónica<br>Universidad distrital FJC<br></div>
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</blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">Diego Alejandro Parra Guzmán<br>Estudiante de ingeniería electrónica<br>Universidad distrital FJC<br></div>
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