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Audio noise depends on buffer-size of I2S DMA

Posted on April 09, 2015 at 12:02Hi! I am using STM405RGT6 and TI PCM3060 audio codec. I use DMA to RX and TX I2S data. I2S configured to 96000 Hz. When I set buffer size, for example, 64 samples I get parasitic frequency peaks at every 1,5 kHz (960...

3deemon by Associate II
  • 6 replies
  • 0 kudos

Digital Audio Effects - Wave file issue

Posted on August 12, 2013 at 04:06dear all. I hope this finds you well. I am trying to implement digital audio effects on a development board featuring a STM32F407ZG processor. I have never used it before but I managed to build the driver for the au...

TDM tutorials?

Posted on March 19, 2015 at 04:11Hello,Could anyone point me to a decent tutorial or resource for TDM audio on the STM32Fxx?Thanks in advance. #audio #tdm

Mp3 decoding and encoding libraries

Posted on December 31, 2013 at 11:40HiI'm looking for the libraries to decode and encode mp3 files. But when I use the ST site I'm not able to download the mp3 libraries. It only says active.

m_ by Associate II
  • 1 replies
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STM32 F3 problem in playing audio

Posted on August 05, 2014 at 07:00Hi,I am new to STM32 and probably asking a dumb question. I have designed a board to play audio files off a SPI flash. I can read and write to flash properly, but when I try to send the audio data to the speaker all...

b2 by Associate II
  • 7 replies
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Audio input output to STM32F4

Posted on June 17, 2014 at 11:38hi everybody!I want to input two audio signals (electronics completed from mic to stm32f4, 1 analog pin and 1 ground) to the stm32f4. Then I want to mix the two audio signals with one signal at half volume and the oth...

STM32F4-Discovery Real-time microphone

Posted on April 30, 2013 at 11:53 Hello, I would like to use the internal microphone built in the board to hear the sound from headphone jack in real time. After that I 'll be implementing filter to the sound but thats not so important at...