About KBéla.1

KBéla.1 · 2024-10-31

Hy,I have tried to resample a 16bit/8kHz audio signal to 16kHz and 48kHz.Conversion works, but the audio is noisy. I am tested it on development board STM32H747 CM7 core.I have tried libraries: SRC236_CM7_GCC.a and SRC236HQ_CM7_GCC.a without quality ...

KBéla.1 · 2024-03-18

I am trying to run AcousticBF (Beamforming library v3.1.0 from XCUBE_SMARTMIC_V2.4.0 pack) on STM32H747 development board, but on the output I get only a tone signal, and no audio hearable from Mics. - The inputs are two PDM mics, and the PDM signal ...

KBéla.1 · 2024-03-05

I know that the library X-CUBE-AUDIO is not compatible with H7 series (only F4 and F7 is supported), but it can be very useful on the H7 mcu, too.Is there any way to make it run on the H747 cpu on M7 core?I want to use mainly SVC (SmartVolume) functi...

KBéla.1 · 2021-01-25

KBéla.1 · 2020-08-27

Hello, I trying to trace audio signal by SWV Data Trace Timeline graph? I cant do it. I can show normally only 10Hz signal. Higher frequency signals make a mismatch in timeline graph. I m using STM32F769 mcu, with coreClock: 216Mhz, SWO Clock: 2000kH...

KBéla.1 · 2024-11-08

Thank you for your helps, it was my fault.I sometimes processed the same packet of data more times. It generated a noise when a new packet started.After a repair, audio quality is good, both in normal, and in HQ modes, too. Anyway I am extracted the ...

KBéla.1 · 2024-11-04

I tried SRC236 lib version: V1.0.3 , from X-CUBE-AUDIO v1.1.1, and it is noisy. The only parameter which I can change is the audio block size, which can be a mono or stereo signal. Now I am using 10ms Mono audio blocks, which not works. Now I am goin...

KBéla.1 · 2024-09-19

It was my mistake. I fill wrong audio data to the input, from a wrong memory address. Beamforming in PCM mode now works, but noise reduction feature seems to be so unusable. White noisy is removed, but instead of that a digital noise is included. Dig...

KBéla.1 · 2024-09-09

The problem was in CRC setup.So hcrc.Init.DefaultInitValueUse = DEFAULT_INIT_VALUE_ENABLE; must be enabled.My full CRC setup is (which works for SVC): hcrc.Instance = CRC; hcrc.Init.DefaultPolynomialUse = DEFAULT_POLYNOMIAL_ENABLE; hcrc.Init.Defa...

KBéla.1 · 2024-03-18

Update:Now I can precompile the beamforming sources without any warnings, but the output is still only a signal tone.

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User Activity

SRC236 Sample rate converter, noisy

AcousticBF (Beamforming) generates only noise.

STM32H747 - Use SVC (SmartVolume control) from X-CUBE-AUDIO lib

Is there a way to use ST AcousticBF from X-CUBE-MEMSMIC1 lib in PDM mode, to use together with dfsdm peripheral? We can also use SAI peripheral, for 4-6 microphones. So what is better SAI or DFSDM?

Which is the highest frequency signal that the SWV Data Trace Timeline graph can show?

Re: SRC236 Sample rate converter, noisy

Re: SRC236 Sample rate converter, noisy

Re: AcousticBF (Beamforming) generates only noise.

Re: STM32H747 - Use SVC (SmartVolume control) from X-CUBE-AUDIO lib

Re: AcousticBF (Beamforming) generates only noise.