Program or method and device for detecting an audio component in ambient noise samples
First Claim
1. Method for evaluating hearing samples of ambient noise recorded by at least one first device in at least one first location where programs to be monitored are received, the hearing samples being obtained by a method comprising recording samples of an ambient noise using a sound transducer, the sample duration being shorter than the sampling cycle, the method for evaluating hearing samples comprisingrecording, by at least one second device in at least one second location where the programs to be monitored are broadcast, a plurality of samples of the programs to be monitored wherein each of the samples of programs to be monitored has a greater duration than a corresponding one of the recorded hearing samples, andcalculating a first correlation for comparing the hearing samples with the program samples in order to find a match, a match occurring if a program sample is considered to be contained in a hearing sample,each of the hearing samples being taken during a respective first period of time completely included in a respective second period of time during which a corresponding one of the program samples is taken.
1 Assignment
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Accused Products
Abstract
The amount of data produced in the process of recording even short hearing samples by means of a monitor may be considerably reduced by effecting a normalization to a range of values D and a subsequent nonlinear mapping to a second, preferably smaller range of values W. The result may be stored in an electronic memory. Further preferred measures are the splitting of the hearing samples into e.g. 6 signals each of which contains a respective frequency band of the original signal, and the conversion of the original amplitude values into energy variation values with simultaneous low pass filtering. Preferably, all cited processing steps are performed by a signal processor. A continuous recording time of up to 14 days by a monitor in the form of a wristwatch can thus be attained with state-of-the-art technology.
47 Citations
17 Claims
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1. Method for evaluating hearing samples of ambient noise recorded by at least one first device in at least one first location where programs to be monitored are received, the hearing samples being obtained by a method comprising recording samples of an ambient noise using a sound transducer, the sample duration being shorter than the sampling cycle, the method for evaluating hearing samples comprising
recording, by at least one second device in at least one second location where the programs to be monitored are broadcast, a plurality of samples of the programs to be monitored wherein each of the samples of programs to be monitored has a greater duration than a corresponding one of the recorded hearing samples, and calculating a first correlation for comparing the hearing samples with the program samples in order to find a match, a match occurring if a program sample is considered to be contained in a hearing sample, each of the hearing samples being taken during a respective first period of time completely included in a respective second period of time during which a corresponding one of the program samples is taken.
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13. A computer program which causes a processor of a computer to execute the computer program, whereby the processor performs a method of evaluating recorded hearing samples of ambient noise recorded by at least one first device in at least one first location where programs to be monitored are received, the hearing samples being obtained by a method comprising recording samples of an ambient noise using a sound transducer, the computer program being stored in a computer storage readable medium of the computer and being accessed by the processor of the computer to execute the computer program, whereby the processor performs the method of evaluating the recorded hearing samples, the method of evaluating the recorded hearing samples comprising
recording, by at least one second device in at least one second location where the programs to be monitored are broadcast, a plurality of samples of the programs to be monitored wherein each of the samples of programs to be monitored has a greater duration than a corresponding one of the recorded hearing samples, and calculating a first correlation for comparing the hearing samples with the program samples in order to find a match, a match occurring if a program sample is considered to be contained in a hearing sample, each of the hearing samples being taken during a respective first period of time completely included in a respective second period of time during which a corresponding one of the program samples is taken.
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15. Method for evaluating hearing samples recorded by at least one first device in at least one first location where programs to be monitored are received, the hearing samples being obtained by a method comprising recording samples of an ambient noise using a sound transducer, the method for evaluating hearing samples comprising
recording, by at least one second device in at least one second location where broadcast signals of the programs to be monitored can be recorded, a plurality of samples of the broadcast signals of the programs to be monitored wherein each of the samples of programs to be monitored has a greater duration than a corresponding one of the recorded hearing samples, and calculating a first correlation for comparing the hearing samples with the program samples in order to find a match, a match occurring if a program sample is considered to be contained in a hearing sample, each of the hearing samples being taken during a respective first period of time completely included in a respective second period of time during which a corresponding one of the program samples is taken.
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16. A computer program which causes a processor of a computer to execute the computer program, whereby the processor performs a method of evaluating recorded hearing samples of ambient noise recorded by at least one first device in at least one first location where programs to be monitored are received, the hearing samples being obtained by a method comprising recording samples of an ambient noise using a sound transducer, the computer program being stored in a computer storage readable medium of the computer and being accessed by the processor of the computer to execute the computer program, whereby the processor performs the method of evaluating the recorded hearing samples, the method of evaluating the recorded hearing samples comprising
recording, by at least one second device in at least one second location where broadcast signals of the programs to be monitored can be recorded, a plurality of samples of the broadcast signals of the programs to be monitored wherein each of the samples of programs to be monitored has a greater duration than a corresponding one of the recorded hearing samples, and calculating a first correlation for comparing the hearing samples with the program samples in order to find a match, a match occurring if a program sample is considered to be contained in a hearing sample, each of the hearing samples being taken during a respective first period of time completely included in a respective second period of time during which a corresponding one of the program samples is taken.
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17. Method for evaluating hearing samples of ambient noise recorded by at least one first device in at least one first location where programs to be monitored are received, the hearing samples being obtained by a method comprising recording samples of an ambient noise using a sound transducer, the method for evaluating hearing samples comprising
recording, by at least one second device in at least one second location where the programs to be monitored are broadcast, a plurality of samples of the programs to be monitored wherein each of the samples of programs to be monitored has a greater duration than a corresponding one of the recorded hearing samples, and calculating a first correlation for comparing the hearing samples with the program samples in order to find a match, a match occurring if a program sample is considered to be contained in a hearing sample, each of the hearing samples being taken during a respective first period of time completely included in a respective second period of time during which a corresponding one of the program samples is taken.
Specification