Hello,I would like to design a microphone array with up to 16 microphones. I want to use the stm32h7a3zi board which has a lot of peripherals.I was looking at the DFSDM interface, but with only 8 channels / 8 filters up to 8 pdm microphones can be ha...
I'm in the first steps of my project. Selected STM32F446ZE Nucleo board for developing MIC ARRAY application as 446ZE used in BLUE COIN and made my own same arranged mic array board. Now I found there is no Beam Forming sample for it!ST has a documen...
I see G4 as successor of L4 for demanding applications, but I noticed DFSDM that is available on many L4s is not available on G4. Out of curiosity: is there a reason for it? Is there a replacement technique I might not be aware of?thanks!
Hello,I'm currently working in a project with the Nucleo-L476RG board. Basically, I have a MEMS microphone (AN-000048) connected to the board. The microphone (I pretend to work in stereo mode) sends PDM data and I use the DFSDM module get the microp...
Hello STM32-Community,I'm currently working witha PDM Microphone (SPH0641) and try to get it to work via DFSDM. I'm using the DFSDM tutorial vom STM32 to achieve the resolution required for my system.Currently I'm using:Filter Order : 3Fil...
Hello ST CommunityI encountered many problems when using DFSDM peripherals，Especially the trigger problem of injection modeThe STM32Cube H7 package which providing DFSDM example，Only refer a applicableation About AudioCan the ST official provide t...
Hi,I'm using DFSDM on NUCLEO-L476RG, the DFSDM configured as follows:static void MX_DFSDM1_Init(void) { /* USER CODE BEGIN DFSDM1_Init 0 */ /* USER CODE END DFSDM1_Init 0 */ /* USER CODE BEGIN DFSDM1_Init 1 */ /* USER CODE END DFSDM1_...
When I use DFSDM, I configure FOSR= 256 ISOR=1 and the output is outside the range in the reference guide +-16777216
I'm having some trouble configurating the DFSDM for reading a mems microphone input on STM32F769I-eval. i've followed the instructions on the application note AN5027 and also the tutorial GETTING STARTED WITH ANALOG. In both cases, the input buffer i...
Any ideas why values would be non linear in the approximately the upper 1 to 2 bits?For the setup below, it is linear to between -17000 to +14000. Doubling the + output only yields around +18000. These are raw values. This really acts like an overflo...