Age estimation

A neural network processes captured image and audio data to compute human age estimate data. A facial feature extractor of the neural network comprises a plurality of neural network processing layers configured to process the image data to compute a facial feature set, which encodes human facial features exhibited in the captured image data. A voice feature extractor of the neural network comprises a plurality of neural network processing layers configured to process the audio data to compute a voice feature set, which encodes human voice features exhibited in the captured audio data. A combined feature set is computed by combining the voice and facial feature sets. An age estimator comprising at least one neural network processing layer is configured to process the combined feature set to compute the human age estimate data.