Abstract: Methods, systems, and apparatus for filtering content at the operating system level. In one aspect, a method includes accessing, at a user device, data that includes content items that are to be presented by an application executing on the user device; prior to the content being presented by the application: for each content item, determining, at the user device and by a filtering model, whether the content item is to be presented by the application or filtered, for each content item that is determined to be presented by the application, allowing the application to present the content item, and for each content item that is determined to be filtered, precluding, by the filtering model by a system level filtering operation performed at an operating system level and separate from an application level at which the application is executing, presentation of the content item by the application.

Abstract: A method and system is disclosed for speech synthesis of streaming text. At a text-to-speech (“ITS) system, a real-time streaming text string having a starting point and an ending point may be received, and a first sub-string comprising a first portion of the text string received from an initial point to a first trigger point may be accumulated. The initial point is no earlier than the starting point and is prior to the first trigger point, and the first trigger point is no further than the ending point. A punctuation model of the ITS system may be applied to the first sub-string to generate a pre-processed first sub-string comprising the first sub-string with added grammatical punctuation as determined by the punctuation model. TTS synthesis processing may be applied to at least the pre-processed first sub-string to generate first synthesized speech, and audio play out of the first synthesized speech produced.

Abstract: Methods, systems, and apparatus for filtering content at the operating system level. In one aspect, a method includes accessing, at a user device, data that includes content items that are to be presented by an application executing on the user device; prior to the content being presented by the application: for each content item, determining, at the user device and by a filtering model, whether the content item is to be presented by the application or filtered, for each content item that is determined to be presented by the application, allowing the application to present the content item, and for each content item that is determined to be filtered, precluding, by the filtering model by a system level filtering operation performed at an operating system level and separate from an application level at which the application is executing, presentation of the content item by the application.