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STMicroelectronics Sharpens Audio Edge for STM32 Developers

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article image STM32 Spirit Audio Engine

ST Microelectronics , a world leader in microcontrollers has teamed up with audio experts Spirit DSP to help product developers exploit the full potential of STM32 microcontrollers in portable audio and home audio products.  

The partnership will provide product developers no-charge access to professionally developed audio software that delivers better features and performance than typical open-source alternatives.  

The STM32 Spirit Audio Engine delivers advantages such as a high-quality codec, rich audio-system features, low memory usage, long battery life and full technical support.  

These advantages typically differentiate professionally developed plug-and-play solutions from open-source software while the no-charge access to the engine matches the key attraction of open-source software.  

STM32 Spirit Audio Engine is optimised for ST’s advanced STM32 microcontroller architecture, leaving more processing and memory resources available for higher-level functions specific to the developer’s application.  

The Audio Engine will be particularly powerful when used with STM32 Connectivity Line microcontrollers, which provide two audio-class I2S ports enabling synchronised data transfers, and also support USB2.0 OTG, Ethernet and CAN communications with connected equipment.  

Other features common to all STM32 microcontrollers, which help boost the performance of audio devices include:

  • Up to 1Mbyte of on-chip Flash memory
  • Up to 12 DMA channels
  • Advanced power management enabling longer battery life
  • Complete compatibility between pins and software across all devices

Michel Buffa, General Manager of ST’s Microcontroller Division says that Spirit DSP’s audio expertise is well recognised among software specialists, system vendors and IC manufacturers.  

ST’s customers can now access the benefits of that expertise without charge in addition to the advanced performance, features and scalability available in the STM32 to deliver innovative products to the market quickly at competitive prices.  

Major features of the STM32 Spirit Audio Engine:

  • Audio Decoders
    • MP3 encoder
    • MP3 decoder with built-in equaliser
    • WMA decoder with built-in equaliser  
  • Audio Utilities
    • Loudness control
    • Three-band parametric equaliser
    • Channel mixing

Licensing Information

The STM32 Spirit Audio Engine is available now with a no-charge license. License charge and royalties related to the use of MP3 and WMA technologies in the final product are not included and are due by the user to the appropriate entities

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