Hi,I'm using STM32WB5MM-DK board interfaced with SPH0645LM4H I2S mic for capturing audio. I also connected a playback speaker with the setup I have mentioned. I also configured UART for transmitting the PCM data from STM32WB5MM-DK to PC. When I trans...
I am trying to decimate a PDM signal in order to obtain a PCM signal. Is this code correct?void LowPassFilterWithDecimation(uint8_t *pdm1, uint8_t *pdm2, int32_t *pcm1, int32_t *pcm2, int pdm_buffer_size, int decimation_factor){ char str[100]; ...
Hello, I'm trying to get Acoustic_SL running to detect the sound location with two INMP441 MEMS microphones. Unluckily, Acoustic_SL does only return two angles {-87, 88} independent of the processed PCM values. May anyone have an idea of what might g...
The examples only support the digital MEMS microphones on the board. I'm uncertain whether the BSP actually supports using analog in. The wm8994.c driver supports analog in, but I'm not certain this function is actually being called by the higher ab...
Hi all,I'm conducting a project which require to Wireless Internet 3G: a remote speaker that can receive and broadcast audio file from a server. Until now, I have listed out some basic criteria for MCU selection mostly relating to peripherals require...
Hi,I am currently working on developping a guitar digital looping pedal. I following my last post, I have starting looking into using the 32F746G DISCOVERY for my app, as it includes enough RAM to store audio data and has some interesting audio featu...
Hello everyone,we currently devolping an Class D amplifier with the sta309a as DSP and TAS5624A from TI for amplification.We face a issue with random levels of noise appearing after power up sequence.This may be an issue of wrong configuration during...
Posted on July 24, 2017 at 15:03Greetings. I need to use the mp3 codec library specifically developed for STM micro-controllers for my audio project (mentioned on the ST website). Nevertheless, I neither found the library to download it nor was I ab...
Posted on April 27, 2017 at 21:22I am trying to read back I2C registers on the TDA7419 audio processor to verify their contents. I've try both standard I2C register reads as well as the custom method on Page 29 of the datasheet (rev7). In all case...