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-# LD3320-dat
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+# LD3320 — Voice Recognition Module (Data)
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-LD3320语音识别模块和SYN6288语音交互模块可实现免录语音交互.两模块功能互补,即可识别语音,又可以进行语音合成，以及MP3播放，是开发新一代语音控制产品的理想方案.
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+LD3320 is a single-chip voice recognition solution. Combined with voice interaction modules such as the SYN6288 it enables speech recognition, speech synthesis (TTS), and MP3 playback — a practical choice for building voice-controlled products.
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-一．LD3320性能如下简介
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-LD3320 芯片是一款“语音识别”专用芯片。该芯片集成了语音识别处理器和一些外部电路，包括 AD、DA 转换器、麦克风接口、声音输出接口等。本芯片在设计上注重节能与高效，不需要外接任何的辅助芯片如Flash、RAM 等，直接集成在现有的产品中即可以实现语音识别/声控/人机对话功能。并且，识别的关键词语列表是可以任意动态编辑的。
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-二．功能介绍
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-LD3320主要特征有：
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-1、 通过快速而稳定的优化算法，完成非特定人语音识别。不需要用户事先训练和录音，理论识别准确率90%。
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-2、不需要外接任何辅助的 Flash 芯片，RAM 芯片和 AD 芯片，就可以完成语音识别功能。真正提供了单芯片语音识别解决方案。
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-3、每次识别最多可以设置50项候选识别句，每个识别句可以是单字，词组或短句，长度为不超10个汉字或者79个字节的拼音串。另一方面，识别句内容可以动态编辑修改，因此可由一个系统支持多种场景。
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-4、芯片内部已经准备了 16 位 A/D 转换器、16 位 D/A 转换器和功放电路，麦克风、立体声耳机和单声道喇叭可以很方便地和芯片管脚连接。立体声耳机接口的输出功率为20mW，而喇叭接口的输出功率为550mW，能产生清晰响亮的声音。
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-5、支持并行和串行接口，串行方式可以简化与其他模块的连接。
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-6、可设置为休眠状态，而且可以方便地激活。
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-7、支持 MP3 播放功能，无需外围辅助器件，主控 MCU 将 MP3 数据依次送入LD3320 芯片内部就可以从芯片的相应 PIN 输出声音。产品设计可以选择从立体声的耳机或者单声道喇叭来获得声音输出。支持MPEG1(ISO/IEC11172-3), MPEG2(ISO/IEC13818-3) 和 MPEG 2.5 layer 3 等格式。
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+## Overview
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+The LD3320 integrates a voice recognition processor and on-chip peripherals including A/D and D/A converters, microphone input, and audio outputs. It is designed for low power and efficient operation and does not require external Flash, RAM, or AD chips to perform keyword recognition. The keyword/phrase list can be edited dynamically, allowing the same system to support multiple scenarios.
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+## Key Features
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+
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+- Single-chip speech recognition — no external Flash/RAM required.
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+- Speaker-independent recognition (no user training required); theoretical recognition accuracy up to ~90% with its optimized algorithm.
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+- Support for up to 50 candidate recognition phrases per recognition cycle; each phrase may be a single character, a word group, or a short sentence (up to 10 Chinese characters or 79 bytes when provided as pinyin strings).
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+- On-chip 16-bit A/D and 16-bit D/A converters plus power amplifier circuitry.
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+- Audio outputs: stereo headphone output and single-channel speaker output.
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+- Supports both parallel and serial host interfaces (serial mode simplifies wiring to an MCU).
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+- Sleep/low-power mode with easy wake-up.
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+- Built-in MP3 decode/playback support — external decoder chips not required. The MCU streams MP3 data into the LD3320 and audio is output on the chip pins.
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+
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+## Audio & Output Details
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+
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+- Stereo headphone output: approximately 20 mW per channel (typical).
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+- Speaker (mono) output: up to approximately 550 mW, sufficient for clear and loud audio playback.
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+
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+Supported MP3 formats: MPEG-1 (ISO/IEC 11172-3), MPEG-2 (ISO/IEC 13818-3), and MPEG 2.5 layer 3.
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+
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+## Interfaces
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+
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+- Microphone input pins for direct mic connection.
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+- Audio outputs for headphone and speaker.
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+- Parallel and serial control/data interfaces for communication with a host MCU.
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+
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+## Typical Use Cases
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+
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+- Voice command control for appliances and toys.
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+- Interactive voice response in consumer electronics.
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+- Standalone audio player with keyword-triggered actions.
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+
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+## Schematic (reference)
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+
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+![](2026-02-27-02-38-07.png)
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+
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+## Documentation
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+
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+- Datasheet: https://w.electrodragon.com/w/LD3320_Datasheet
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+
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+## Source / Example Code
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+
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+- Example driver and sample code: https://github.com/libdriver/ld3320
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+
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+## ref
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+
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+- [[ICroute-dat]]
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Network-dat/RC-dat/RC-dat.md
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- [[RC-apps-dat]] - [[rc-controller-dat]]
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+- [[rc-gimbal-dat]]
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+
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- [[rc-kits-dat]]
SDK-dat/ROS-dat/ROS-dat.md
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+
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+
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+# ROS-dat
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+
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+- [[robot-dat]]
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+
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+- [[ROS2-dat]] - [[docker-dat]] - [[ubuntu-dat]] - [[RPI-SBC-5-dat]] - [[ROS-dat]] - [[SDK-dat]]
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+
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+- [[ROS1-dat]]
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+
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+
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+
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+ROS
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+
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+In the context of the Robot Operating System (ROS), "Robot Control" usually refers to ros_control. This is a powerful software framework that acts as the "nervous system" of a robot, connecting the high-level brain (which plans movements) to the low-level muscles (the motors and actuators).
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+
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+
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+
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+## ref
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+
app-dat/robot-dat/robot-dat.md
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# robot-dat
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+- [[robotics-mobile-dat]] - [[robot-dog-dat]]
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+
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+- [[robotics-arm-dat]]
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+
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- [[robot-Two-wheeled-self-balancing-dat]]
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- [[robot-joint-dat]] == [[motor-gimbal-dat]] - [[encoder-dat]]
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@@ -32,9 +36,7 @@
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## system
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-- [[ROS2-dat]] - [[docker-dat]] - [[ubuntu-dat]] - [[RPI-SBC-5-dat]]
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-
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-- [[ROS1-dat]]
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+- [[ROS-dat]]
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- other system == [[python-dat]]
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- [[robot-dat]] - [[motor-driver-dat]]
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+- [[voice-control-dat]] - [[voice-dat]] - [[sound-dat]] - [[audio-dat]] - [[voice-detection-dat]]
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-ROS
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-
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-In the context of the Robot Operating System (ROS), "Robot Control" usually refers to ros_control. This is a powerful software framework that acts as the "nervous system" of a robot, connecting the high-level brain (which plans movements) to the low-level muscles (the motors and actuators).
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+- [[CAD-dat]]
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-- [[voice-control-dat]] - [[voice-dat]] - [[sound-dat]] - [[audio-dat]]
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app-dat/robot-dat/robot-dog-dat/robot-dog-dat.md
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+
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+
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+# robot-dog-dat.md
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+
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+- [[robot-pet-dat]]
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+
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+
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+
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+## ref
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+
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+- [[robot-dog]]
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\ No newline at end of file
app-dat/robot-dat/robot-pet-dat/robot-pet-dat.md
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# robot-pet-dat
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+
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+
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+
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+## ref
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+
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+- [[robot-pet]] - [[robot]]
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\ No newline at end of file
mechanics-dat/CAD-dat/CAD-dat.md
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@@ -11,7 +11,7 @@
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- [[3D-dat]]
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-
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+- [[solidworks-dat]]
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