MIPI Alliance
MIPI Audio Webinar Series
21-23 October 2025 (8-9 a.m. PDT each day)
Registration grants you access to all three webinars in the series.
Embedded audio solutions are increasingly leveraging MIPI interfaces and protocols to interconnect ever greater numbers of advanced audio components, subsystems and systems-on-chips (SoCs). Since the advent of MIPI SLIMbus® in 2008 (now a legacy specification), MIPI’s portfolio of audio specifications has greatly expanded with the release of MIPI SoundWire® in 2015, and the upcoming MIPI SoundWire I3S (SWI3S) specification in Q3 2025. Recent developments also include the delivery of two important audio software specifications – MIPI DisCo™ for SoundWire® and MIPI SoundWire Device Class for Audio (SDCA™). These advancements enable the current portfolio of MIPI audio specifications to address an ever-broadening set of embedded audio use cases within mobile devices, tablets, laptop PCs, IoT devices, automobiles and beyond.
In this three-part webinar series, the leaders of the MIPI Audio and Software working groups will provide an introduction to the portfolio of current MIPI audio specifications and share insights into future specifications in development. The series will start with a primer session, offering a system-level overview and high-level introduction to MIPI audio interfaces and supporting software specifications. Building on this introductory session, the following two webinars will take a more in-depth look at the latest audio advancements—MIPI’s new SWI3S audio interface, and the growing suite of audio software specifications and tools.
Sessions and Presenters
A Primer on MIPI Audio Specifications
21 October | 8-9 a.m.
Presenters: Niel Warren, Aruni Nelson and Christian Jenkner
This introductory session will set the stage for the week's more in-depth webinars covering the upcoming MIPI SWI3S specification and audio software specifications and tools. It will start with a system-level overview of MIPI’s portfolio of audio interfaces and supporting software specifications, explaining how this comprehensive suite of specifications provides a flexible framework for the development of embedded audio systems.
After the overview, the session will examine each MIPI audio interface in more detail, covering the current MIPI SoundWire, new MIPI SWI3S and (briefly) legacy MIPI SLIMbus interfaces, diving into the history, purpose, characteristics and properties of each interface. A brief overview of MIPI’s supporting audio software specifications, conformance test suite and other tools will also be included.
Niel Warren, Technical Consultant, MIPI Audio Working Group, and former chair of the Audio Working Group
Aruni Nelson, Chair of the MIPI Audio Working Group
Christian Jenkner, Co-Vice Chair of the MIPI Audio Working GroupIntroducing MIPI SoundWire I3S (SWI3S)
22 October | 8-9 a.m.
Presenters: Niel Warren, Aruni Nelson and Christian Jenkner
The upcoming MIPI SWI3S specification (to be released in Q3 2025) addresses the market’s need for a new low latency, multi-drop, higher transport bandwidth (up to 76 MSymbols/s) audio interface. The specification provides multiple physical-layer (PHY) options with unified protocol and software, including reduced EMI/EMC 2-wire low voltage signaling with embedded clock, suitable for use in ever-smaller, more tightly packaged devices (e.g., smart earbuds, smartwatches), and larger devices that require multi-meter audio line lengths (e.g., cars, robots, large display panels).
This session will offer a comprehensive guide to the SWI3S interface, covering key use cases, characteristics and properties, as well as new PHY options, protocols and command flows (with examples). It will also provide an overview of key features and enhancements (over previous generation MIPI / non-MIPI audio interfaces), a summary of supporting specifications and tools (including the SWI3S visualizer tool), and a preview of what’s coming next in SWI3S v1.1.
MIPI Audio Supporting Software Specifications and Tools
23 October | 8-9 a.m.
Presenters: Devon Worrell and Jon Eklund
MIPI’s publicly available audio software specifications define standardized mechanisms for host devices to interact with host-controllable audio devices connected via a MIPI SoundWire interface, simplifying audio software architectures and driver requirements for SoundWire-connected devices.
This session will explore MIPI’s target audio software framework, covering MIPI SDCA and the MIPI DisCo Specification for SoundWire, and preview the upcoming MIPI Audio Portal Specification. It will also dive into how these software specifications can be leveraged by developers to optimize the integration of microphones, amplifiers and other audio devices into host platforms.
Devon Worrell, Chair of the MIPI Software Working Group
Jon Eklund, Co-Vice Chair of the MIPI Software and Audio Working Groups