US Patent 9990176 Latency reduction for content playback

Methods and devices for determining whether a local version of content is stored on an electronic device associated with a user account on a backend system are described herein. In a non-limiting embodiment, the backend system may track and monitor the content stored on the electronic device using the associated user account. If an individual speaks an utterance requesting a particular content item, the backend system may determine, prior to sending the content to the electronic device, whether a local version is stored within the electronic device's memory. If so, the backend system may instruct the electronic device to output the local version, thereby reducing the amount of bandwidth consumed. The backend system may further be capable of predictively generating and then caching certain audio data to the electronic device. For instance, frequent utterances may be tracked, and likely responses to those utterances may be generated prior to the utterance being spoken so that the response is available substantially instantaneously.