Abstract: A resonator attenuates sound waves at first and second frequencies. The resonator includes a first tube, and a second tube received within the first tube. Both tubes have an open end and a closed end. The first tube has an axial length which is longer than the axial length of the second tube. The first tube attenuates sound waves at the first frequency and the second tube attenuates sound waves at the second frequency. The second tube has an outer wall which engages an inner wall of the first tube. The open end of the second tube is surrounded by the open end of the first tube. The open end of the first tube is attached to an engine air intake conduit. The conduit communicates air from a charge air cooler to an engine intake manifold.

Abstract: A vehicle cab noise suppressing system includes a cab interior panel having an opening exposed to acoustic noise in the cab, an acoustic resonator chamber, and a conduit communicating the resonator chamber to the opening. The resonator chamber is formed by a plurality of walls which are spaced apart from the interior panel and which are formed by a second panel. A third panel cooperates with the walls to enclose the resonator chamber. The chamber volume and the diameter and length of the conduit are chosen so as to acoustically tune the chamber to a noise frequency in the cab and thereby reduce noise in the cab.

Abstract: The invention relates to an exhaust pipe assembly. There is a need for an exhaust pipe assembly which transmits less noise to the environment. The exhaust pipe assembly includes a hollow exhaust pipe, and a hollow shield which surrounds at least a portion of the pipe. The shield is supported from and separated from the pipe by a plurality of elastomeric support elements which are interposed between the pipe and the shield. Each support element includes a larger body positioned between the pipe and the shield, and a smaller stem which projects from the body and extends into a bore formed in the shield. Each support element is preferably formed by injecting an elastomeric material through a corresponding one of the bores to form the body in the space between the pipe and the shield.

Abstract: In one aspect, a method of processing a voice signal to extract information to facilitate training a speech synthesis model is provided. The method comprises acts of detecting a plurality of candidate features in the voice signal, performing at least one comparison between one or more combinations of the plurality of candidate features and the voice signal, and selecting a set of features from the plurality of candidate features based, at least in part, on the at least one comparison. In another aspect, the method is performed by executing a program encoded on a computer readable medium. In another aspect, a speech synthesis model is provided by, at least in part, performing the method.

Abstract: A method of extracting a subset of speech units from a larger set of speech units for use by a speech synthesizer in synthesizing speech, wherein the speech units are stored in a compressed encoded representation that was generated by a codec, the method comprising: selecting members of the subset of speech units based on an overall cost associated with using the speech synthesizer to synthesize a test set of speech, wherein the overall cost includes at least one error introduced by using the codec to decode the stored representations of the speech units; and storing the selected subset of speech units on a speech-enabled device.

Abstract: Briefly, in accordance with an embodiment of the invention, a method and apparatus to avoid incoherency between a cache memory and a flash memory is provided. The method may include invalidating at least one cache line of information stored in the cache memory to avoid incoherency between the cache memory and the flash memory in response to a flash erase operation, a flash write operation, an operation that makes information inaccessible in the flash memory, or an operation that moves information from one region of the flash memory to another region of the flash memory. Other embodiments are described and claimed.

Abstract: According to certain aspects of the invention a mobile voice communication device includes a wireless transceiver circuit for transmitting and receiving auditory information and data, a processor, and a memory storing executable instructions which when executed on the processor causes the mobile voice communication device to provide a selectable personality associated with a user interface to a user of the mobile voice communication device. The executable instructions include implementing on the device a user interface that employs the different user prompts having the selectable personality, wherein each selectable personality of the different user prompts is defined and mapped to data stored in at least one database in the mobile voice communication device. The mobile voice communication device may include a decoder that recognizes a spoken user input and provides a corresponding recognized word, and a speech synthesizer that synthesizes a word corresponding to the recognized word.