Netiq Corporation

Ganymede Software Inc.

Zenph Sound Innovations, Inc.

Zenph Studios, Inc.

Peter James Schwaller

John Quillian Walker, Ii

Steven Thomas Joyce

Timothy Scott Huntley

John Lee Wood

Joan Marie Bellinghausen

Vikas Chandra

Dana Borger

William Tsun

Christopher David Selvaggi

Mark Eric McCorry

Andrew H Gross

Joel L Webb

Mark Clarence Zelek

Jeffrey Todd Hicks

Roger A Lingle

David Vi Hien Quan

John Quillian Walker Ii

John C Christensen

David V H Quan

Scott Alan Southard

Kim Irvin Mayton

Methods for generating a new recording of a past musical performance of a musician from a recording of the past musical performance include obtaining a high-resolution data record representing actions of the musician while playing the past musical performance that is generated based on the recording of the past musical performance and positioning an automated musical instrument in a selected acoustic context and a sound detection device at a selected sound detection location in the selected acoustic context. The high-resolution data record is provided to the musical instrument to cause the musical instrument to re-produce the actions of the musician while playing the past performance. Sound waves generated by the musical instrument are recorded while the actions of the musician are being re-produced to generate the new recording of the past musical performance.

Methods, systems and computer program products for regenerating audio performances

Methods, system and/or computer program products for detection of a note include receiving an audio signal and generating a plurality of frequency domain representations of the audio signal over time. A time domain representation is generated from the plurality of frequency domain representations. A plurality of edges are detected in the time domain representation and the note is detected by selecting one of the plurality of edges as corresponding to the note based on characteristics of the time domain representation.

Methods, systems and computer program products for detecting musical notes in an audio signal

Methods, systems and computer program products are provided for monitoring a task executing on a data processing system, the task having an associated work in process queue and an associated work pending queue. The task is configured to properly execute requests that are terminated in progress and restarted from an initial start point. A watchdog task determines if the task is executing properly and restarts the task if it is not executing properly. Restarting is provided by placing requests in the work in process queue of the terminated task in the work pending queue and clearing the work in process queue. Execution by the task of requests from the work pending queue is then reinitiated.

Methods, systems and computer program products for monitoring interrelated tasks executing on a computer using queues

Dynamic filtering methods, systems and computer program products are provided for network performance test results which may apply network troubleshooting expertise and knowledge of network topology to select and display test results in a manner which may facilitate analysis of those results by IT staffs. In a further aspect of the present invention, a severity index is provided which may be generated based on exception events from a plurality of network performance measurements, for example, response time, throughput and availability, which measurements are generated from test results obtained from agents located on various devices on a computer network. The test results may be obtained from either passive application monitor agents or active network test agents. In another aspect of the present invention, the exception events may be detected based on automatically generated threshold criteria which may be provided user selectable sensitivity and may be based on a specified percentage criteria relative to baseline performance results. In a further aspect of the present invention, the test results may be stored using data buckets with the number of data buckets and/or the range of each of the data buckets being selected to provide a desired overall range and granularity for each of the plurality of network performance measurement types. The range (width) of some of the data buckets may be narrower than others to provide greater resolution in a region of interest.

Methods, system and computer program products for dynamic filtering of network performance test results

Methods, systems and computer program products for tracking network device performance are provided which, in various embodiments, may track device performance by acquiring and storing routing information for communication connections over the network on a scheduled basis during normal operations and responsive to exception events. Network performance measurements may be obtained on a repeated basis, for example, pursuant to a test schedule. The performance measurements may be obtained from either active or passive testing. A traceroute may be initiated for a plurality of connections (for example, client to server) on a repeated basis, for example, a periodic basis, and the performance measurements for each connection for the same time period may be associated with the detected routing information to provide baseline information relating to the performance of one or more routes which support each connection. In addition, the network performance measurement system may detect exception events based on the performance measurements and initiate traceroutes responsive to detected exception events and associate the exception events with the detected routing information as well. Accordingly, IT staffs may be provided the opportunity to compare different routings to detect relatively poor performing routings and identify the network devices included in poor performance routings.

Methods, systems and computer program products for tracking network device performance

Methods, systems and computer program products are provided which coordinate operations for a plurality of interrelated tasks executing on a computer using actual state objects and desired state objects. For each event including coordination between two of the plurality of interrelated tasks, a first (or initiator) task initiates operations by a second (or executor) task to carry out a desired sequence of operations. The initiator task sets a desired state object to the desired state and submits a request to the executor task. The executor task, in turn, operates on the request in order to update an actual state object to the desired state stored in the desired state object by the initiator task. Write control over the desired state object is therefore granted to the initiator task while write control over the actual state object is granted to the executor task. A transitional state may be provided for the actual state object during the time period while the executor task is carrying out the operations necessary to change from the actual state to the desired state. Different restrictions on operations related to the associated object may be provided while the actual state object is in the transitional state. Also provided are systems, methods and computer program products for monitoring a task executing on a computer which utilizes a work in process queue and a work pending queue and restarting the task if it is not executing properly.

Methods, systems and computer program products for coordination of operations for interrelated tasks

Methods, systems and computer program products for testing the performance of a communication network including a plurality of endpoint nodes executing application programs which utilize the communications network are provided. A console node is provided on the network which may initiate operations by test agents executing on one or more of the plurality of endpoint nodes. The agents may generate network performance information using passive application monitoring and/or active endpoint pair based network testing responsive to scheduling instructions from the console node. Specific application programs may be designated for passive monitoring and active test protocols may be provided based on an expected type of application communication traffic. In another aspect of the present invention, one of a plurality of types of transaction models defining the beginning and ending reference point for a transaction timing measurement may be provided to the endpoint nodes for use in passive application monitoring. In a further aspect of the present invention, the endpoint nodes may be automatically discovered by the console node.

Methods, systems and computer program products for network performance testing through active endpoint pair based testing and passive application monitoring

Communications network performance is tested utilizing a test scenario simulating actual communications traffic on the network to be tested. The test scenario includes an endpoint node specific test protocol between an endpoint node pair including a first and associated second endpoint node on the network to be tested. A partner endpoint node test protocol is determined from the endpoint node specific test protocol and communicated to from the first endpoint node to the associated second endpoint node of the endpoint node pair. A plurality of endpoint node pairs may executed different endpoint node specific test protocols under a test scenario. A console node is provided on the network for establishing the test scenario and assigning the test scenario to endpoint node pairs and initiating execution of the test scenario. Performance data may be monitored at one of the endpoint nodes of each endpoint node pair and reported to the console node either as it is generated or after completion of the test. The test scenario may be terminated when any one endpoint node pair completes execution of its test protocol. Multiple network protocols may be utilized within a single test scenario. Each endpoint node specific test protocol includes an associated script representing a type of applications traffic such as a credit check, or a database. update. Endpoint node pairs execute tests as applications level programs on existing endpoint nodes allowing testing of networks using actual protocol stacks independent of the applications programs available on existing endpoint nodes.

Methods, systems and computer program products for endpoint pair based communications network performance testing

Methods, systems and computer program products are provided which test network performance by defining test schedules including test protocols to be implemented and when the protocols should be executed for a plurality of defined connections on a network. A connection may be defined between two endpoint nodes on the network. At times specified in the test schedule, the endpoint node pair executes the test protocol and measures the performance of the network connection between the two nodes without requiring any involvement of application software which may or may not be installed on the computer hardware supporting the endpoint node. The test protocol may define the type of network layer protocol to utilize (for example, TCP), and the test script or scripts to be communicated using the appropriate stack on the computer hardware supporting the endpoint node. The schedule may be provided with an expiration date and a console node is provided for distribution of test schedules, monitoring of availability of endpoint nodes and receipt of measured performance measurements for reporting to a network manager. In further aspects of the present invention, auto-thresholding and coordination of interrelated but asynchronous tasks executing at the console node are provided.

Methods, systems and computer program products for scheduled network performance testing

Communications network performance is tested utilizing a test scenario determined based on a type of applications traffic expected on the network to be tested. A console node is provided on the network for establishing the test scenario and assigning the test scenario to endpoint nodes on the network to be tested. Each endpoint node is assigned an endpoint node specific test protocol. Execution of the test protocols by the endpoint nodes is initiated by the console node. Performance data such as throughput, transaction rate and response time may be monitored at selected ones of the endpoint nodes and reported to the console node either as it is generated or after completion of the test. The test scenario may be terminated when all endpoint node specific test protocols have completed execution or when any one endpoint completes execution of its test protocol. Multiple network protocols may be utilized within a single test scenario. Each endpoint node specific test protocol includes an associated script representing a type of applications traffic such as a credit check, or a database update. Endpoint nodes execute tests as applications level programs on existing endpoint nodes on the network to be tested allowing testing of networks using actual protocol stacks independent of the applications programs available on existing endpoint nodes.

Endpoint node systems computer program products for application traffic

Systems, methods and computer program products for applications traffic

Communications network performance is tested utilizing a test scenario simulating actual communications traffic on the network to be tested. A console node is provided on the network for establishing the test scenario and assigning the test scenario to endpoint nodes on the network to be tested. Each endpoint node is assigned an endpoint node specific test protocol. Execution of the test protocols by the endpoint nodes is initiated by the console node. Performance data such as throughput, transaction rate and response time may be monitored at selected ones of the endpoint nodes and reported to the console node either as it is generated or after completion of the test. The test scenario may be terminated when all endpoint node specific test protocols have completed execution or when any one endpoint completes execution of its test protocol. Multiple network protocols may be utilized within a single test scenario. Each endpoint node specific test protocol includes an associated script representing a type of applications traffic such as a credit check, or a database update. Endpoint nodes execute tests as applications level programs on existing endpoint nodes on the network to be tested allowing testing of networks using actual protocol stacks independent of the applications programs available on existing endpoint nodes.

Methods, systems and computer program products for test scenario based

Communications network performance is tested utilizing a test scenario simulating actual communications traffic on the network to be tested. The test scenario includes an endpoint node specific test protocol between an endpoint node pair including a first and associated second endpoint node on the network to be tested. A partner endpoint node test protocol is determined from the endpoint node specific test protocol and communicated to from the first endpoint node to the associated second endpoint node of the endpoint node pair. A plurality of endpoint node pairs may executed different endpoint node specific test protocols under a test scenario. A console node is provided on the network for establishing the test scenario and assigning the test scenario to endpoint node pairs and initiating execution of the test scenario. Performance data may be monitored at one of the endpoint nodes of each endpoint node pair and reported to the console node either as it is generated or after completion of the test.

Growing community of inventors

Raleigh, NC, United States of America

Peter James Schwaller