1. An audio device comprising:
an at least first audio signal and a second audio signal for receipt by an at least first audio input and a second audio input with each of the at least first audio input and second audio input associated with respective channels;
a capture mechanism that captures at least the first output data associated with the at least first audio signal and second output data associated with the second audio signal;
an estimation unit that processes with a digital signal processor the first output data and the second output data and results in a plurality of parameters that are stored in a memory, where the plurality of parameters are applied by the digital signal processor to subsequent first audio signals and second audio signals.
2. The audio device of claim 1, where the at least first audio signal and the second audio signal are filtered with a pink filter.
3. The audio device of claim 1, where the at least first audio signal is generated from the memory.
4. The audio device of claim 1, where the plurality of parameters include delays, polarities and sample rate corrected impulse responses associated with the at least first audio input and second audio input.
5. The audio device of claim 1, where the capture mechanism automatically detects the beginning of the at least first audio signal and the second audio signal.
6. The audio device of claim 5, where the capture mechanism automatically detects the beginning of the at least first audio signal and the second audio signal by comparing the energy associated with the at least first audio signal and the second audio signal with a noise threshold.
7. The audio device of claim 1, where the capture mechanism stores in the memory more than two predetermined periods of first output data and second output data.
8. The audio device of claim 7 where at least one of the two predetermined periods is longer than a maximum expected delay difference between any of the respective channels.
9. The audio device of claim 1, where the estimation unit processes the first output data and the second output data at predetermined intervals.
10. A method for determining parameters of an existing audio device comprising:
generating an at least first audio signal and a second audio signal for receipt by an at least first audio input and a second audio input of the existing audio device with each of the at least first audio input and second audio input associated with respective channels;
capturing with a electronic capture mechanism at least the first output data associated with the at least first audio signal and second output data associated with the second audio signal;
processing with an estimation unit located in a digital signal processor the first output data and the second output data, and results in a plurality of parameters; and
storing in a memory the plurality of parameters, where the plurality of parameters are applied by the digital signal processor to subsequent first audio signals and second audio signals.
11. The method of claim 10, includes filtering the at least first audio signal and the second audio signal with a pink filter.
12. The method of claim 10, where generating further includes generating the at least first audio signal from the memory.
13. The method of claim 10, where the processing with the estimation unit includes determining delays, polarities and sample rate corrected impulse associated with the existing audio device.
14. The method of claim 10, where capturing with the capture mechanism further includes, detecting automatically the beginning of the at least first audio signal and the second audio signal.
15. The method of claim 14 where detecting further includes comparing the energy associated with the at least first audio signal and the second audio signal with a noise threshold.
16. The method of claim 10, where capturing with the capture mechanism further includes storing in the memory more than two predetermined periods of first output data and second output data.
17. The method of claim 16 where the two predetermined periods are longer than a maximum expected delay difference between any of the respective channels.
18. The method of claim 10, where processing with the estimation module of the first output data and the second output data occurs at predetermined intervals.
19. A computer readable media that contains a plurality of machine readable instructions that when executed result in a method for determining parameters of an existing audio device comprised of instructions for the method steps of:
generating an at least first audio signal and a second audio signal for receipt by an at least first audio input and a second audio input of the existing audio device with each of the audio inputs associated with a channel;
capturing with a electronic capture mechanism at least the first output data associated with the at least first audio signal and second output data associated with the second audio signal;
processing with an estimation unit located in a digital signal processor the first output data and the second output data, and results in a plurality of parameters; and
storing in a memory the plurality of parameters, where the plurality of parameters are applied by the digital signal processor to subsequent first audio signals and second audio signals.
20. The computer readable media with instructions of claim 19 includes instructions for the step of filtering the at least first audio signal and the second audio signal with a pink filter.
21. The computer readable media with instructions of claim 19 includes instructions for the step of generating the at least first audio signal from the memory.
22. The computer readable media with instructions of claim 19, where the instructions for the step of the processing with the estimation unit includes instructions for determining delays, polarities and sample rate corrected impulses associated with the existing audio device.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A node management system for managing sensor nodes and mobile nodes, in which each of said mobile nodes is associated with a respective predetermined light series pattern signal that identifies a respective holder of the mobile node, the node management system comprising:
a camera installed in a room in which said sensor nodes are distributed, the camera taking pictures of each of the respective holders of said mobile nodes upon the respective holder leaving or entering the room;
a sensor network base station communicating with said mobile nodes wirelessly;
a server including a node managing section and a sequence control section, said node managing section monitoring said sensor nodes and changes to a total number of mobile nodes in communication with said sensor network base station, the sequence control section controlling operation of both said node managing section and said imaging processing section according to a set of predetermined processing rules, each predetermined processing rule specifying a set of processing operations to take upon satisfaction of a corresponding set of conditions detected by said sensor nodes and recognized by said node managing section;
an image processing section processing each picture of each of the respective holders of said mobile nodes taken by said camera;
an application client displaying a passage map on a display device, the passage map including a corresponding position and a corresponding image of each of the respective holders who leave or enter the room, the corresponding image of each respective holder being extracted from the pictures of the respective holder taken by said camera upon the respective holder leaving or entering the room; and
a network interconnecting said sensor nodes, said mobile nodes, said server, said image processing section, and said application client,
wherein, upon recognition by said node managing section that information detected by one or more of said sensor nodes satisfies a first set of conditions corresponding to the respective holder of one of the mobile nodes leaving or entering the room, said sequence control section issues a first instruction to the image processing section to begin attempting to recognize the respective predetermined time series light pattern signal that identifies the respective holder leaving or entering the room in the pictures taken by said camera upon the respective holder leaving or entering the room and issues a second instruction to the sensor network base station to direct each of the mobile nodes in communication with the sensor network base station to begin emitting the respective predetermined time series light pattern signal that is associated with the mobile node, and, upon recognition of the respective predetermined time series light pattern signal that identifies the respective holder leaving or entering the room by said image processing section, said image processing section attempts to determine an identification (ID) of the mobile node that is associated with the respective predetermined time series light pattern signal that identifies the respective holder leaving or entering the room and, upon successfully determining the ID, outputs the ID and the image corresponding to the respective holder leaving or entering the room.
2. A node management system according to claim 1, wherein:
said image processing section is separate from said sensor nodes and said mobile nodes,
each of said mobile nodes is attached to a respective person,
said respective predetermined time series light pattern signal that is associated with each of said mobile nodes is unique to said mobile node or dynamically defined by said server; and
the first and second instructions are issued by said sequence control station at approximately simultaneously.
3. A node management system according to claim 2, wherein said sequence control section controls said camera to rotate an imaging direction of the camera according to the set of predetermined processing rules and conditions detected by said sensor nodes.
4. A node management system according to claim 3, wherein said camera is installed on a ceiling or on an upper wall in the room, and
the first set of conditions indicates detection of an opened door by a first sensor of the sensor nodes and the imaging direction of said camera is rotated by said sequence control section toward the door according to a first predetermined processing rule and the first set of conditions.
5. A node management system according to claim 4, further comprising an authority determiner for determining authority based on personal information including individual room entering authority, wherein said authority determiner determines whether or not a person associated with the ID has authority based on conditions detected by said sensor nodes, and upon determining that the person has no authority, outputs an alarm indicating a suspicious person onto a display screen.
6. A node management system according to claim 5, wherein said image processing section, upon failing to determine the ID, extracts a face image from said image corresponding to the respective holder leaving or entering the room, determines whether the respective holder is entering or leaving the room, and, upon determining that the respective holder is entering the room, outputs an indication of a presence of the respective holder onto the display screen.
7. A node management system according to claim 4, wherein said second instruction further directs said sensor network base station to allocate the respective predetermined time series light pattern signal associated with each mobile node in communication with the sensor network base station to said mobile node and said sensor node which belongs to only one base station corresponding to the door, and wherein said image processing section attempts to recognize the respective predetermined time series light pattern signal that identifies the respective holder leaving or entering the room by comparing a time series light pattern signal determined from the pictures taken by said camera upon the respective holder leaving or entering the room with said allocated respective time series light pattern signals.
8. A node management system according to claim 4, wherein:
at least one of said sensor nodes is connected to a chair in said room and transmits a detected fact of someone leaving the chart or sitting in the chair to said application client via said server;
each of said mobile nodes periodically attempts transmit a respective ID of the mobile node to the sensor network base station for transmitting to said server;
said server, upon receiving each respective ID, records an ID notification record that includes a current time, the received ID, and an identification of the sensor network base station in a historical list; and
said server periodically compares the detected fact with a previous state and transmits a detected change therebetween to said application client for updating said passage map.
9. A node management system according to claim 4, wherein said sensor network base station, upon receiving the second instruction, directs each of the mobile nodes in communication with the sensor network base station to begin emitting the respective predetermined time series light pattern signal that is associated with the mobile node except for any mobile nodes detected as having entered another room but not detected as having left the other room.
10. A computer-readable storage medium having program code embodied thereon, the program code executable by a processor to implement a method of node management, the method comprising:
acquiring images from an imaging device that is connected to a camera;
monitoring changes to a total number of mobile nodes in communication with a sensor network base station;
receiving sensed data detected by a first sensor node;
determining whether or not the received sensed data satisfies predetermined conditions;
searching for a processing sequence associated with the conditions if the sensed data satisfies the predetermined conditions;
executing the processing sequence if the sensed data satisfies the predetermined conditions, the processing sequence including:
issuing a first instruction to each mobile node in communication with said sensor network base station to begin emitting a respective predetermined time series light pattern signal that is associated with the mobile node and identifies a respective holder of the mobile node;
recognizing a first predetermined time series light pattern signal in the acquired images that is associated with a first mobile node in communication with the sensor network base station;
attempting to determine an identification (ID) of the first mobile node based on the first predetermined time series light pattern signal;
outputting the ID if the ID is determined and a first image of the images acquired from the imaging device corresponding to the respective holder of the first mobile node to use in outputting an alert on the basis of the first predetermined time series light pattern signal; and
displaying a passage map on a display device that shows a position and a face image of the respective holder of the first mobile device, the face image being extracted from the first image.
11. A node management program according to claim 10, wherein said processing sequence further includes issuing a second instruction to set an imaging direction of the camera based on the sensed data prior to acquisition of the first image from the imaging device.
12. A node management program according to claim 10, wherein said processing sequence further includes analyzing the first image from said imaging device and extracting the face image therefrom.
13. An enteringleaving management system comprising:
a camera installed in a room, the camera taking pictures of persons leaving or entering a room;
a plurality of name card type nodes each being carried by a respective person and each including a solar battery, a radio communication circuit and an LED emitting a predetermined on-off time-series light pattern signal that is uniquely associated with the name card type node and identifies the respective person carrying the name card type node, wherein each time interval during which the LED of each name card node is maintained in an on state or an off state according to the predetermined on-off time-series light pattern signal that is uniquely associated with the name card type node is not longer than a time interval between pictures taken by the camera;
at least one sensor node detecting information related to persons entering or leaving the room;
a sensor network base station communicating with said plurality of name card type nodes and the at least one sensor node wirelessly;
an image processing section processing each picture taken by said camera;
a server including a node managing section and a sequence control section, said node managing section monitoring said at least one sensor node and changes to a total number of name card type nodes in communication with said sensor network base station, the sequence control section controlling operation of both said node managing section and said imaging processing section according to a set of predetermined processing rules, each predetermined processing rule specifying a set of processing operations to take upon satisfaction of a corresponding set of conditions detected by said at least one sensor node and recognized by said node managing section;
an application client displaying a passage map on a display device, the passage map including a corresponding position and a corresponding image of each person who leaves or enters the room, the corresponding image of each person who leaves or enters the room being extracted from the pictures taken by said camera; and
a network interconnecting said at least one sensor node, said plurality of name card type nodes, said camera, said server, said image processing section and said application client;
wherein, upon recognition by said node managing section that information detected by said at least one sensor node satisfies a first set of conditions, said sequence control section issues a first instruction to the sensor network base station to direct each of the plurality of name card type nodes in communication with the sensor network base station to begin emitting the predetermined on-off time-series light pattern signal that is uniquely associated with the name card type node, and then said image processing section acquires the pictures taken by the camera, recognizes the predetermined on-off time-series light pattern signal that is uniquely associated with a first name card type node being emitted by the first name card type node in the pictures acquired from the camera, attempts to determine an identification (ID) of the first name card type node according to the predetermined on-off time-series light pattern signal that is uniquely associated with a first name card type node, and outputs the ID if the image processing section determines the ID and a position of the first name card type node.
14. An enteringleaving management system according to claim 13, wherein said image processing section, upon failing to determine the ID, extracts a face image in said pictures acquired from the camera, determines whether someone is entering or leaving the room, and, upon determining that someone is entering the room, outputs an indication of a presence of the respective holder onto a display screen.