Package content and description

AN4229

10/26

DocID024112 Rev 1

2

Package content and description

2.1

Firmware description

STM32 audio vocoders package includes a set of firmware libraries used to build speech-

based audio applications. The firmware is made up of a main application (demonstration)

and four simple examples (one for each codec).

The project tree is presented in Figure 2.

Figure 2. Project tree

There are multiple abstraction layers for the audio components. The main abstraction layer

is located in "STM32_Audio/Common" (manages output interfaces, decoders and mass

storage control), while all the encoding/decoding operations are called by the abstraction