nsajob.blogg.se

The tail length tells the library how long to keep track of audio data for echo cancellation. Its constructor requires you to specify two things: the audio settings and the tail length to use for echo cancellation. For this, you should create and return an instance of FM. The next method you must implement is CreateProcessor. In your implementation, instantiate a sink appropriate for your platform, as shown in the example below. Generally, this corresponds to your system speakers. This method creates a sink where the mixed audio output can be played. You must first implement the CreateOutputMixerSink method. There are two methods to implement, CreateOutputMixerSink and CreateProcessor. You need to implement a platform-specific version of this for each of your projects. The FM.LiveSwitch.AecContext class is an abstract class that provides baseline acoustic echo cancellation capability. Similarly, this is not needed on web platforms as each browser has its own implementation. There are no libraries for iOS and macOS because Apple implements their own echo cancellation so there is no need for LiveSwitch to re-invent the wheel. The acoustic echo cancellation implementation can be found in the FM.LiveSwitch.AudioProcessing library and associated native libraries. Here we cover the inclusion of the audio processing libraries specifically, full instructions on setting up project structure are covered in the Starting a New Project section. Read on for information on how to add this to your projects. It is included with the standard LiveSwitch distribution as a separate library. LiveSwitch provides an acoustic echo cancellation implementation. If someone retransmits data that is similar enough to the data you have just sent, it is recognized as an echo and is removed from the audio data before playback. Acoustic Echo Cancellation solves this by keeping track of the audio data you send. The remote peer is playing your audio stream through the speakers, then picking it up with the microphone and streaming it back to you. If you ever hear yourself speaking a few hundred milliseconds after you have spoken, this is most likely because the remote peer does not have Acoustic Echo Cancellation (AEC).