Technical Articles Archives - Page 40 of 118

Implementing a Frequency Domain Equalizer on Android

Author Profile: leilei, Engineer at TianTian Pictorial

This article is mainly divided into three parts:

1. Creation and rendering process of the existing audio control sticker

2. Implementation of the FFT algorithm to convert time domain information into frequency domain information

3. Attaching the generated equalizer to the lenses of 3D glasses

1. Creation and rendering process of the existing audio control sticker

The process of the existing audio control sticker is shown in the figure:

1) Configure audio control switch, audio control amplitude, and other parameters

2025-01-11

How to Stand Out Among 450 IoT Platform Providers?

Source: IoT Analytics

Author: Padraig Scully

Published by: IoT Think Tank

Please indicate the source and origin when reprinting

------ 【Introduction】 ------
Although the Internet of Things has rapidly grown into a multi-billion dollar market, it is not easy to stand out among over 450 platform vendors. IoT Analytics has studied four strategies in the market and listed four companies that have adopted the 'right' practices for industry reference!

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Creating a Smart Home Device to Annoy Your Neighbors

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From Quantum Bit

In the dead of night, when your neighbors are arguing, partying, or children are crying, how do you deal with it?

Knock on the door? Use earplugs? Silently endure until you’re on the verge of a nervous breakdown?

A foreign guy was driven to migraine by the noise from upstairs, so he created a “weapon” to

2025-01-11

Understanding PenTile Technology in Mobile LCD/AMOLED Displays

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As the full-screen trend becomes increasingly apparent in mobile phones, many people believe that the higher the resolution, the clearer the display. In fact, this idea is not comprehensive. The material of the screen and the arrangement of subpixels are also important factors affecting display quality. There are generally two types of subpixel arrangements: standard RGB and RGB PenTile. What do they mean? Which arrangement is better?

2025-01-11

Firmware Analysis of IoT Devices: A Beginner’s Guide

Introduction

In recent years, IoT devices have infiltrated every aspect of life, bringing great convenience to people. However, due to the data and privacy information generated in daily life, their security has become a growing concern. In the previous article, we discussed controlling Xiaomi devices using scripts, focusing on security analysis from a traffic perspective; in this article, we will analyze the vulnerabilities of firmware.

Beginning

"To do a good job, one must first sharpen one's tools." Before we begin, let's talk about

2025-01-11

Five Essential Principles for Mastering FPGA Development

China has a talent pool of 461,000 integrated circuit professionals, with a talent gap of 320,000. The average annual demand for talent is 100,000, but entering the semiconductor industry and mastering HDL languages is not easy.

To excel in FPGA and enter the semiconductor industry, one must think from a hardware perspective during the development process. Understanding the deeper meanings behind IDE tool operations is crucial. When learning HDL, do not rush to write code immediately; avoid blindly using floating

2025-01-11

The Split Between LEDE and OpenWrt: A Technical Overview

(May 2016) Early in May, when a group of core OpenWrt developers announced that they would begin working on a derivative of OpenWrt (or possibly a branch) called the Linux Embedded Development Environment (LEDE), the OpenWrt user community was thrown into chaos.

-- Nathan Willis

Table of Contents

Compiled from | https://lwn.net/Articles/686767/ Author | Nathan Willis Translator | XYenChi

For home WiFi routers and access points, the OpenWrt

2025-01-11

Laptop Buying Guide for 618 Sales (Continuously Updated)

We use different colors to mark different product positions, roughly divided into three categories:Gaming Laptops、All-Purpose Laptops、Ultrabooks。

1. Red is for gaming laptops, primarily used for gaming, and they are also the choice with higher configuration performance in the same price range. High-end gaming laptops are suitable for e-sports enthusiasts and 3A game professionals.

2. Yellow is for all-purpose laptops, which are both lightweight and have good performance, but they are not as thin and light as ultrabooks, and their gaming performance can

2025-01-11

DIY AR Glasses Using Raspberry Pi: A Cost-effective Solution Under 100 Yuan

整理 | 郑丽媛

出品 | CSDN（ID：CSDNnews）

When it comes to VR/AR glasses, people usually think of high prices and long development cycles.

Therefore, when hearing about a developer who took a different approach by using Raspberry Pi Zero to create a feature-rich AR glasses prototype, even making the lenses himself, the first reaction of most people was "incredible"—and Miroslav Kotalík is the "incredible" protagonist.

DIY AR Glasses Using Raspberry Pi: </div>
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Efficient Low-Coordination Copper-Based Catalysts for Selective CO2 Reduction to Ethylene

According to previous literature, the C-C coupling step in the CO2RR reaction is widely considered to be the core for producing C2 products, especially ethylene. Therefore, adjusting the spatial configuration of Cu to modulate the adsorption of *CO, thereby facilitating CO-CO coupling, is regarded as an effective method to promote ethylene production.The strong adsorption of *CO and the enhanced selectivity for C2+ due to low-coordination sites are particularly significant. However, under catalytic conditions (such as pH, potential, and electrolyte), most

2025-01-11

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