The essence of character device driver registration and registration and cancellation steps, and the role of the struct inode/file structure

1. The essence of character device registration and registration and cancellation steps The essence of character device driver registration As long as a certain information exists on the operating system, there must be an object describing this information in the operating system. The character device driver is registered into the kernel, and there must be […]

How to make an asynchronous sequence (AsyncSequence) gracefully aware of cancellation (Cancel)

Overview Since the introduction of the new async/await concurrency model in Swift 5.5, asynchronous queue (AsyncSequence) has become an indispensable and important member of it. Different from ordinary sequences, asynchronous sequences have special “laziness” and concurrency. If the elements in the sequence are not ready yet, while the system waits patiently, it will also use […]

Android echo cancellation

Android Echo Cancellation Foreword In voice chats, voice calls, interactive live broadcasts, voice-to-text applications or games, it is necessary to collect the user’s microphone audio data and then send the audio data to other terminals or speech recognition services. If the collected microphone data is used directly, there will be an echo problem. The so-called […]

SpringBoot + Redis/RabbitMQ implements the payment expiration cancellation function of orders (delayed messages)

SpringBoot + Redis/RabbitMQ implements the payment expiration cancellation function of orders (delayed messages) Scenes: After the user places an order, if payment is not made within 15 minutes, the order status will automatically change to canceled status. Method to realize: Redis Use redis to implement the delayed message function. In the article, the monitoring of […]

Get application exit CancellationToken

Get application exit CancellationToken Intro Currently, our applications use more and more asynchronous methods. Asynchronous methods usually have a CancellationToken parameter to cancel our asynchronous operation in time. So how do we get the CancellationToken, we only need to use a CancellationTokenSource to cancel it when the application exits. Cancel C exit For a simple […]

C#–How to gracefully cancel the execution of the process Cancellation

Overview Starting with .NET Framework 4, .NET uses a unified model for cooperative cancellation of asynchronous or long-running synchronous threads. The model is based on a lightweight object called a CancellationToken. This object is done by passing a token to each thread (through the chain are passed sequentially). A single thread can sequentially pass copies […]

Test the echo cancellation APP and turn on aec agc ns gain noise reduction (with source code)

Sound Effects is a technique used to enhance sound. Sound effects can be achieved in various ways, including sound processors and digital signal processing. Here is a brief introduction to three common sound processing techniques: Adaptive echo cancellation (Acoustic Echo Cancellation, AEC): AEC technology is mainly used in voice communication systems, which can automatically cancel […]

In-depth discussion of the detailed operations of active noise cancellation and audio signal processing using various algorithms such as FxLMS, FuLMS, and NLMS in Matlab, VST, and C

Part 1: Introduction and Algorithm Fundamentals Noise cancellation and audio signal processing have become important issues in multimedia communication, audio processing, music composition, and other related fields. In this blog, we will discuss in depth how to use various algorithms such as FxLMS, FuLMS, NLMS for active noise cancellation and audio signal processing in Matlab, […]