1. A method of speech recognition, comprising: determining if video images of a speech source are detected; indicating if the video images are not detected; receiving audio signals from the speech source; receiving video signals from the speech source; detecting if the audio signals can be processed; processing the audio signals if it is detected that the audio signals can be processed; processing the video signals based on a detection that at least a portion of the audio signal cannot be processed; converting at least one of the audio signals and the video signals into recognizable information; and implementing a task based on the recognizable information.