SpeechRecognitionEngine recognizer = new SpeechRecognitionEngine(); // set up recognizer here recognizer.RecognizeAsync(RecognizeMode.Multiple); // starts the async recognition process // wait for some time before cancelling the operation Thread.Sleep(3000); recognizer.RecognizeAsyncCancel(); // cancels the async recognition processIn this example, we set up a `SpeechRecognitionEngine` and initiate an asynchronous recognition process using the `RecognizeAsync` method. After waiting for some time, we cancel the recognition process using the `RecognizeAsyncCancel` method. Another example of the `RecognizeAsyncCancel` method is when you want to limit the duration of the recognition process. You can start a timer and then call the `RecognizeAsyncCancel` method when the timer expires. This allows you to limit the amount of time that the recognition process runs. Package library: `System.Speech.Recognition`