Introduction to Multimedia Solutions

[中文]

Note

This document is automatically translated using AI. Please excuse any detailed errors. The official English version is still in progress.

Overview of Multimedia Solutions

Espressif provides a complete set of multimedia solutions, covering audio, video, and display, helping developers to implement rich multimedia features in Internet of Things (IoT) applications.

Features of the solution:

  • Audio Development Framework ESP-ADF: ESP-ADF is the official audio development platform for the ESP32 series chips. Developers can easily develop various audio applications based on ESP-ADF and add custom features to them. In addition, ESP-ADF also provides connection services for various voice platforms, making it easy for users to directly connect to the cloud platform to develop voice products. Reference link: ESP-ADF

  • LCD Solution: Espressif’s HMI smart screen (LCD) solution has excellent performance and scalability, and can be paired with different ESP master chips. The solution performs well in various application scenarios such as smart home control, home appliance screens, medical equipment, industrial control, and children’s education. Advantages include high-performance graphics visualization, low memory occupancy, etc. In addition, the screen adaptation solution is perfect and supports high-performance JPEG decoding and frame rate optimization. Reference link: LCD Solution

  • Multimedia and AI Combined Solution: Espressif’s multimedia solution combines advanced AI technology to provide developers with a comprehensive multimedia and intelligent analysis solution. For example:

    • Offline and Online Voice Interaction: Functions such as voice wake-up and voice recognition based on AI technology are suitable for products such as voice switches and monitoring alarms.

    This solution greatly enhances the intelligence and scene adaptation capabilities of multimedia products, helping developers to create efficient intelligent devices.

Advantages of the solution:

  • High-performance chip support: The ESP series chips have industry-leading RF performance and integrate corresponding hardware-level accelerators to support the efficient implementation of multimedia functions.

  • Rich development framework: The development framework ESP-ADF provided by Espressif helps developers to quickly build multimedia applications and shorten the development cycle.

  • Diverse application scenarios: Espressif’s multimedia solution is suitable for smart homes, preschool education, and other fields, meeting different application needs.

  • Open source ecosystem: Espressif actively participates in the open source community, provides rich open source resources and documents, and supports developers for secondary development and innovation.

Through the deep integration of multimedia and AI, Espressif provides strong support for the implementation of intelligent functions of IoT devices, helping developers to create feature-rich, high-performance intelligent products.

Multimedia Application Solutions

Note

Some of the solutions in this section are mainly used to illustrate possible application scenarios and do not include complete software implementation references.

The currently provided audio and video reference examples can be combined to build a complete audio and video application scenario.

  • Audio Rhythm Light Solution: By picking up and analyzing external sounds, the brightness, color, and number of lights of the lighting equipment change with the strength and rhythm of the sound, thereby achieving the effect of intelligent rhythm.

    Code repository: ESP-LEDStrip

  • Image Rhythm LED Strip Solution: By collecting and analyzing pictures, the brightness, color, and number of lights of the lighting equipment follow the environment to achieve intelligent rhythm.

  • Offline and Online Voice Interaction Solution: This solution can implement offline and online voice recognition and interaction functions with a single chip. The Espressif AFE algorithm framework used in this solution can perform acoustic front-end processing based on the powerful ESP32 and ESP32-S3 SoC, providing users with high-quality and stable audio data, thereby building high-performance and cost-effective smart voice products. The Espressif AFE algorithm has passed the Software Audio Front-End certification of Amazon Alexa built-in devices.

    Code repository: ESP-SR

  • Reading Companion / Phonetic Machine Solution: Espressif provides audio processing algorithms such as EQ, Sonic, Downmix, etc. based on ESP-ADF, which can process the frequency domain sound color of the audio during audio playback, or perform multi-channel audio synthesis.

  • Picture Book + Point Reading Solution: Espressif adds a front-end Camera to the voice story machine, which can realize OID scanning recognition or picture recognition functions. In addition to supporting online voice Q&A and early education resource playback, it can also realize the functions of point reading pens and picture book machines. The solution uses the Espressif ESP32 / ESP32-S3 chip, with excellent cost performance, to achieve audio encoding and decoding, front-end voice processing, camera driving, and image compression.

  • Smart Speaker/Receiver/Story Machine Solution: Based on Espressif’s offline and online voice solution, Espressif has created a Turn Key smart speaker solution, which supports front-end voice algorithms, voice wake-up word customization, mainstream cloud access, etc. in a one-time hardware and software package. It can assist users in quickly landing and accessing voice intelligent terminals. The related front-end voice algorithms have passed product certifications from domestic and foreign companies such as Baidu/Amazon.

  • Smart Dictionary Pen Solution: To meet the need for faster and more convenient word scanning queries, Espressif and LingSi jointly created a new generation of ultra-cost-effective scanning pen solutions. The offline OCR recognition responds super fast, and it also has the learning ability of voice Q&A knowledge encyclopedia. The word library dictionary contains authoritative knowledge from elementary school to high school, suitable for applications at multiple stages of teenagers.

  • ESP-MRM Multi-Device Playback Solution: Espressif ESP-MRM (Multi-Room Music) is a Wi-Fi-based home multi-speaker interconnection music sharing protocol, which supports playing music in different corners of the home at the same time. It supports more than 7 Wi-Fi wireless smart speakers to play at the same time, achieving 5.1 / 7.1 channel playback effects, creating a wireless multi-channel surround playback environment.

    Code repository: ESP-MRM

  • Voice Phone Solution: The voice telephone conference solution does not require an additional DSP chip, and only one ESP32 / ESP32-S3 is needed to perform voice front-end processing, and at the same time realize conference room telephone, voice interaction and HMI functions.

    Reference video: Espressif ESP-TEL Conference Call

  • ESP-RTC Solution: Real-time audio and video communication solution based on ESP32-S3/ESP32-P4.

    Reference article: ESP-RTC Real-time Audio and Video Communication Solution

  • Cost-effective Cat Eye Door Lock Solution: Based on the AI SoC ESP32-S3, Espressif has launched a cost-effective smart cat eye doorbell solution. The solution can carry a USB / DVP camera and an RGB interface display with a maximum resolution of 800 x 480. Based on the outstanding AI processing capabilities of ESP32-S3, it can achieve smooth visual doorbell audio and video interaction experience locally and in the cloud. The solution does not require an additional DSP chip, and a single chip can perform two-way video intercom, while realizing voice interaction, HMI interaction, and real-time network calls.

  • Elderly/Child Care Camera Solution: Different from the design of traditional IPC Camera, Espressif adds screen display and two-way video intercom functions on the original basis, and launches an elderly/child care solution. This solution is based on Espressif ESP32-S3/ESP32-P4 to realize audio and video two-way intercom, video stream encoding and decoding, screen display and other functions.

  • Pet Feeder Solution: In the new era, pet owners often have to work overtime, travel, and go out, so it is necessary to have a smart feeder. Espressif has launched solutions based on ESP32-S3/ ESP32-P4, etc., for precise feeding when the owner is not at home. The rich peripherals can add motor control and various sensors to monitor the pet’s status in real time. The excellent audio and video capabilities can also perform real-time monitoring and voice interaction.

Multimedia Reference Materials