Abstract:
A compressed digital audio signal is transmitted from an audio source along a connection wire to an audio receiver. The digital audio signal can encode digital audio data having different sampling frequencies, frames sizes, and other information. The audio receiver that receives the digital audio signal can decode and convert the compressed digital audio signal into multiple synchronized analog signals, which are used to drive multiple speakers. The audio receiver may also synchronize the audio data with associated video data so that the audio playback and video playback are “in sync”, despite delay introduced by the audio signal decoding at the audio receiver.
Abstract:
A compressed digital audio signal is transmitted from an audio source along a connection wire to an audio receiver. The digital audio signal can encode digital audio data having different sampling frequencies, frames sizes, and other information. The audio receiver that receives the digital audio signal can decode and convert the compressed digital audio signal into multiple synchronized analog signals, which are used to drive multiple speakers. The audio receiver may also synchronize the audio data with associated video data so that the audio playback and video playback are “in sync”, despite delay introduced by the audio signal decoding at the audio receiver.
Abstract:
An adaptive stream player that has control over whether a retrieved stream is cached in a local stream cache. For at least some of the stream portions requested by the player, before going out over the network, a cache control component first determines whether or not an acceptable version of the stream portion is present in a stream cache. If there is an acceptable version in the stream cache, that version is provided rather than having to request the stream portion of the network. For stream portions received over the network, the cache control component decides whether or not to cache that stream portion. Thus, the cache control component allows the adaptive stream player to work in offline scenarios and also allows the adaptive stream player to have rewind, pause, and other controls that use cached content.
Abstract:
A diesel particulate collector (10) based on the principles of inertial impaction, virtual impaction, and filtration, for controlling exhaust emissions (12) from a diesel internal combustion engine (14) includes a housing (16) having a first plate (24) with a plurality of nozzles (26) directing exhaust flow therethrough, a first impactor (28) causing particle separation and a change of flow direction, a second plate (30) having a second set of nozzles (32) directing exhaust flow therethrough, and a second impactor (34) causing particle separation and a change of flow direction, in a first of multiple stages in a sequential cascaded separation and collection system.
Abstract:
An acoustic resonator (20) has a resonator cavity (22) with a resonator port (24) for communicating with an exhaust flow passage (26) conducting acoustic waves therethrough. Adjustable port structure varies acoustic impedance of the port by various combinations including translation to vary area along an arcuate surface, translation between discrete areas, translation to cumulatively open port area, multiple translation, multiple ports, rotational area change, and rotational length change. Adaptive control may be provided. A combined passive and active acoustic system may also be provided.