[opus] CELT CFFT size configuration

Diego Alejandro Parra Guzman daparrag at correo.udistrital.edu.co
Wed Apr 12 12:27:06 UTC 2017

Dear all,

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:

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.

please let me know, I you need I could be more specific.

thanks you so much.

Diego Alejandro Parra Guzmán
Estudiante de ingeniería electrónica
Universidad distrital FJC
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.xiph.org/pipermail/opus/attachments/20170412/3c0242ca/attachment.html>

More information about the opus mailing list