search for: cmsis

On Wed, May 6, 2015 at 5:30 PM, Daniel Dilts <diltsman at gmail.com> wrote: > > > On Wed, May 6, 2015 at 12:51 AM, Will Newton <will.newton at gmail.com> wrote: >> >> On Wed, May 6, 2015 at 6:22 AM, Chris Lattner <clattner at apple.com> wrote: >> > On May 5, 2015, at 6:47 PM, Daniel Dilts <diltsman at gmail.com> wrote: >> > >>

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 so...

...thanks cheers On Wed, Apr 12, 2017 at 2:27 PM, Diego Alejandro Parra Guzman < daparrag at correo.udistrital.edu.co> wrote: > 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,...

What is the possibility to use the Cortex-M4 DSP instructions to fully optimize the OPUS code? Could we use the ARM CMSIS DSP library for this optimization? Thanks, Heng -----Original Message----- From: opus-bounces at xiph.org [mailto:opus-bounces at xiph.org] On Behalf Of opus-request at xiph.org Sent: Tuesday, November 04, 2014 2:00 PM To: opus at xiph.orgis Subject: opus Digest, Vol 70, Issue 1 Send opus mail...

...g" <opus at xiph.org> Message-ID: <D0ED62510480544BA069AFE0E7A549460148B3C218 at ep2p-exmbs2.ms.starkey.com> Content-Type: text/plain; charset="us-ascii" What is the possibility to use the Cortex-M4 DSP instructions to fully optimize the OPUS code? Could we use the ARM CMSIS DSP library for this optimization? Thanks, Heng -----Original Message----- From: opus-bounces at xiph.org [mailto:opus-bounces at xiph.org] On Behalf Of opus-request at xiph.org Sent: Tuesday, November 04, 2014 2:00 PM To: opus at xiph.orgis Subject: opus Digest, Vol 70, Issue 1 Send opus maili...

Hi, I am working on DSP module of Ne10. I see there are fixed-point and floating-point FFT inside Opus. Is fixed-point FFT only a fall back for CPU without VFP? On ARMv7-A and ARMv8-A, benchmark result shows that fixed-point (int32) and floating-point (float32) FFT have similar performance. I guess fixed-point version is not often used on these platforms. Is it worth the effort to NEON-optimize