dmitry1945

Results 49 comments of dmitry1945

FFT is wrong by factor 2. Violation of the Parseval–Plancherel identity (DSP-130)

Dear @Bobobel, thank you for the issue. We will change the documentation (or the code). The factor of 2 is related to calculation performance. Regards, Dmitry

No optimized dsps_bit_rev_sc16 resulting slow sc16 S3 FFT performance overall (DSP-98)

Hi @ayavilevich , In float version of FFT we have an table base implementation of bit reverse, and that's why it's faster. We will think to add the same functionality...

dsps_dotprod_f32 is slow on first call (examples/dotprod) (DSP-121)

Hi @Bobobel the timing for the first call is high because the dsps_dotprod_f32 is located in flash and should be copied to the cash after the first call. At second...

Two potential issues regarding dsps_fft4real example as well as documentation for cplx2real(). (DSP-91)

Hi @Galfy1 , 1. We not use any divider because they could be different for direct and inverse FFTs. It’s up to user to apply any number. 2. To save...

Two environments with different actions were specified for the same target (DSP-115)

Hi @ProjectRobal @Ackites , I will look today. Will inform you when solution will be ready. Thank you

Two environments with different actions were specified for the same target (DSP-115)

@ProjectRobal could you please guide me, how you build your project, and which project are you building? Thanks, Dmitry

Support for more image processing functions (DSP-81)

Hi @X-Ryl669 , We have a plans to include it in this year. Regards, Dmitry

Resampler in esp-dsp, feature request (DSP-90)

@AristarchosOfSamos, Thank you for the feedback. We will add resampler to esp-dsp. I'm not promise the exact day, but I hope, it will be this year. Regards, Dmitry

esp-dsp支持idf的最新master分支吗 (DSP-134)

Hi @shenxiaozheng , yes, it works with latest master. Do you have a problem with that?

Using LyraT to sample input, IIR functions to process, then output. The dsps_biquad_gen_xxx_f32 function creates garbage coefficients, I can't validate dsps_biquad_f32 as working. (DSP-111)

Hi @mrSilkie , Thank you for the feedback. Yes, the frequency is from 0 up to 0.5, where 1 is a sample frequency. The values above 0.5 I this are...