Showing Posts From
Audio & Video
15 articles
- 04 Apr, 2026
Complete Guide to Porting the PANNs Audio Classification Model to the RK3588 Platform
In the previous article Summary of Pre-Research Information on the PANNs Audio Classification Model, I summarized information about the PANN…
- 26 Mar, 2026
Summary of Preliminary Research on the PANNs Audio Classification Model
This article organizes the basic information of the classic audio classification model PANNs, its model architecture, the classification of …
- 15 Sep, 2025
Working Principles and Applications of Short-Wave Infrared (SWIR) Sensors
This article briefly summarizes the technical concepts of SWIR sensors and imaging systems based on short-wave infrared band imaging, as wel…
- 15 Aug, 2025
A Detailed Summary of Gamma Correction in the Image ISP Processing Workflow
This article provides a detailed summary of the Gamma correction module in the image ISP processing workflow, explaining the reasons for inc…
- 06 Apr, 2025
Summary of Audio Interfaces in Consumer Audio Codecs
Based on a study and summary of the datasheet for the commonly used TLV320AIC3101 Audio Codec in the market, this article delves into the in…
- 31 Mar, 2025
Introduction to Audio 3A Processing: AEC, ANS, and AGC
This series of articles provides a comprehensive summary of the concepts, theories, and working principles of 3A audio processing (AGC, AEC,…
- 27 Mar, 2025
Explanation and Matching of CRA Parameters for Image Sensors and Lenses
CRA stands for Chief Ray Angle, which is the angle of the chief incoming light ray. Although both lenses and image sensors have CRA paramete…
- 04 Jan, 2025
Detailed Explanation of the G.711 Audio Compression Standard
G.711 is an audio compression standard defined by the ITU-T, widely used in telecommunication networks and VoIP fields. In practical impleme…
- 13 Dec, 2024
Summary of Features and Specifications of Mainstream US Consumer NVRs in 2024
By analyzing the basic features and specifications of the mainstream consumer NVR models promoted by leading manufacturers in the Amazon US …
- 31 Oct, 2024
The Pre-Roll Feature on Ring Doorbell and How It Works
Pre-Roll and Advanced Pre-Roll on Ring Doorbell Ring is currently a mainstream supplier in the North American and European doorbell markets,…
- 15 Jul, 2024
Research Summary on the HomeKit-Based Video Camera Ecosystem
Due to business needs, I conducted research and a summary on video cameras under the Apple HomeKit ecosystem to evaluate whether this could …
- 03 Mar, 2022
AAC Audio Codec Profiles and Support Across Platforms
Introduction to AAC AAC stands for Advanced Audio Codec. AAC was historically introduced as the successor to the MP3 audio codec algorithm. …
- 13 Oct, 2020
Summary of GB28181 Basics
Problems Solved by the GB28181 Standard: - Addresses protocol interoperability issues between platforms and products from different manufact…
- 07 Aug, 2020
Summary of AF Autofocus Algorithms and PDAF Working Principles
Definition and Basic Classification of AF Autofocus Algorithms - AF: Auto Focus. - Basic definition of autofocus: The image sensor in a came…
- 14 May, 2020
Analog HD Video Transmission Technology
Background Having worked in the camera industry, my focus has always been on digital, or IP, cameras. Consequently, my understanding of anal…