STM32 Audio processing SW library

The audio processing components for STM32F4 consists in a comprehensive set of high-quality efficient software libraries ready to be embedded into many kinds of audio appliances. All modules are delivered with internal 32-bits processing and support either 16 or 32 bits I/O buffers.

Key Features

  • The STM32F4 audio processing components provide the following capabilities:
    • Sampling Rate Converter:
    • SRC236 supporting ratios 2, 3, 6, 1/2,1/3, 1/6, 3/2 and 2/3
    • SRC441 for specific 44.1->48 kHz conversion (10 ms framing)
  • OmniSurround Stereo Widener:
    • Audio virtualization for a 1.0/2.0 input stream to a widened 2.0 output stream
  • OmniSurround Multichannel Virtualizer:
    • Audio virtualization for 5.1/7.1 input stream to a virtualized 2.0 output stream
  • Graphical Equalizer:
    • 10-band graphical equalizer for 48 kHz input signal
  • Generic Biquad filters
  • Bass Manager (including compressor & limiter)
  • Smart Volume Control (including compressor)


Technical Documentation

Product Specifications
Description Version Size
DB2497 DB2497: STM32F4 audio processing components 1.0 115.99 KB
Technical Notes & Articles
Description Version Size
TN1199 TN1199: STM32F4 Audio Processing 1.0 219.44 KB

Presentations & Training Material

Description Version Size
STM32 and STM8 embedded software solutions 7.0 3.12 MB


License Agreement
Description Version Size
SLA0048 SLA0048: Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT 5.2 87.58 KB

Get Software

Part Number General Description Software Version Supplier Marketing Status GitHub link Download
STM32-AUDIO100A STM32 Audio processing SW library 2.2.0 ST Active -


Support & Community