Software IP presents full automotive audio function set
The software simplifies developers’s task to implement audio post-processing functions such as tone control, cabin equalization and chime generation using the Si47911/12 ICs’ integrated Tensilica HiFi EP DSP. Developers can use Silicon Labs’ development tools to port their proprietary audio algorithms, design custom audio processing flows using Silicon Labs’ library of audio functions, or combine their audio algorithms with Silicon Labs’ audio post-processing functions.
Automotive radios can support FM phase diversity reception, Radio Data System (RDS), and digital radio standards such as HD Radio and Digital Audio Broadcast (DAB). The combination of Silicon Labs’ new audio software products and Global Eagle tuner ICs is intended to address the global demand for advanced car radio technology by supporting all worldwide broadcast radio bands while enabling flexible and powerful approaches to audio post-processing.
Silicon Labs’ fixed-function audio software provides a complete audio post-processing solution for all analog and digital audio functions in the automotive radio head unit. The audio software includes an extensive set of user-programmable parameters that enable developers to configure the audio post-processing algorithms for different car models. The software supports the following features:
• Three independent audio post-processing paths:
- Main cabin: 4-channel or 6-channel audio
- Auxiliary: 2-channel audio (for rear seat headphones)
- Voice: audio processing for two microphone inputs
• Two tone sequence generators
• Two wave generators played from internal memory
An audio software development kit (SDK) enables developers to port their audio algorithms to the Global Eagle Si47911/12 audio system and unlock the capabilities of the audio DSP. The SDK includes the following:
- Development board with software tools for real-time debugging
- A library of building blocks that can be used by the developer’s algorithms
- An encryption utility that secures the audio processing IP
Silicon Labs Audio Topology Editor (SLATE) SLATE is a graphical editor running in MathWorks’ Simulink environment that enables developers to design a custom audio processing flow using Silicon Labs’ library of software modules. SLATE also enables developers to reuse and modify the Silicon Labs audio design used in the fixed-function audio processing. Together, SLATE and the audio SDK enable developers to combine their own algorithms with Silicon Labs’ audio processing blocks to create new audio processing topologies. The SDK enables developers to port their IP to the audio DSP and format the new IP as a SLATE module, which can then be manipulated in SLATE to simplify powerful and complex audio processing development.
If you enjoyed this article, you will like the following ones: don't miss them by subscribing to :
