Abstract: A respiratory therapy (RT) system may be configured for acoustic operations. Such a system may include one or more acoustic generators to produce an inaudible acoustic signal that may be implemented for different uses. The acoustic generator(s), such as when coupled to a patient interface or air circuit of a respiratory therapy device, may provide inaudible acoustic signals whereby data concerning respiratory therapy may be collected at low cost, reducing cost of care in providing respiratory therapy. For example, the acoustic generator(s) may be configured to generate an acoustic signal indicative of one or more parameters, such as a flow rate or a pressure of the flow of air, or a type of or useable life of a component (e.g. patient interface). The system may have an acoustic receiver that may detect one or more acoustic signals from the acoustic generator, the RT system, the patient or the environment.

Abstract: A respiratory therapy (RT) system including one or more acoustic generators (8500) to produce an inaudible acoustic signal. The acoustic generator(s), such as when coupled to a patient interface or air circuit of a respiratory therapy device, may provide inaudible acoustic signals indicative of one or more parameters, such as a flow rate or a pressure of the flow of air, or a type of or useable life of a component (e.g. patient interface). The system may have an acoustic receiver that may detect one or more acoustic signals from the acoustic generator, the RT system, the patient or the environment.

Abstract: A respiratory therapy (RT) system including one or more acoustic generators (8500) to produce an inaudible acoustic signal. The acoustic generator(s), such as when coupled to a patient interface or air circuit of a respiratory therapy device, may provide inaudible acoustic signals indicative of one or more parameters, such as a flow rate or a pressure of the flow of air, or a type of or useable life of a component (e.g. patient interface). The system may have an acoustic receiver that may detect one or more acoustic signals from the acoustic generator, the RT system, the patient or the environment.

Abstract: Methods and systems for indexing a plurality of documents, each document comprising a text portion, the method parses the text portion of each of the plurality of documents to form a plurality of respective local document indexes each associated with a respective document, and stores the local document index in a database, Each local document index has a plurality of local text terms and a local weighting associated with each text term From the plurality of local document indexes, forming a global document index associated with each global text term. The global weighting is determined with respect to a parameter associated with a reference global text term. Also, methods and systems for analyzing a text portion, retrieving documents from a database relevant to the text portion and for refining the results of a search are disclosed.

Abstract: Methods and systems for indexing a plurality of documents, each document comprising a text portion, the method parses the text portion of each of the plurality of documents to form a plurality of respective local document indexes each associated with a respective document, and stores the local document index in a database, Each local document index has a plurality of local text terms and a local weighting associated with each text term From the plurality of local document indexes, forming a global document index associated with each global text term. The global weighting is determined with respect to a parameter associated with a reference global text term. Also, methods and systems for analyzing a text portion, retrieving documents from a database relevant to the text portion and for refining the results of a search are disclosed.