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Audio & Video

15 articles

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…

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 …

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…

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…

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…

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,…

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…

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…

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 …

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,…

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 …

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. …

Summary of GB28181 Basics

Problems Solved by the GB28181 Standard: - Addresses protocol interoperability issues between platforms and products from different manufact…

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…

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…