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 […]
Tag: cancellation
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 […]
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 […]
Echo cancellation delay time estimation for webrtc
It is not reasonable to estimate the delay time called echo cancellation. The core here is to estimate the condition boundary of calling webrtc. We all know that the prerequisite for webrtc echo cancellation to take effect is to obtain the information of the far-end sound, and then get the near-end sound and the far-end […]
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, […]
11 Ways to Realize Automatic Order Cancellation (Part 2)
1. Monitor Redis expired key In Redis, there is a publish-subscribe mechanism The producer needs to specify which channel to send the message to when sending the message, and the consumer can get the message by subscribing to this channel. The channel in the figure is understood as a topic in MQ. And in Redis, […]