SYSTEMS AND METHODS FOR GATHERING RESEARCH DATA
First Claim
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1. A method for obtaining information from an audio signal in a portable device, comprising the steps ofreceiving time domain audio data;
- converting the time domain audio data to frequency domain data in the portable device, wherein the frequency domain data comprises a plurality of frequency bands of different sizes; and
processing the frequency domain data according to frequency band size to (1) read an ancillary code and (2) extract a signature.
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Abstract
Methods and systems are provided for gathering research data that includes information pertaining to audio signals received on a portable device, such as a cell phone. Frequency domain data is received or produced, a signature is extracted from the frequency domain data and an ancillary code is read from the frequency domain data.
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Citations
20 Claims
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1. A method for obtaining information from an audio signal in a portable device, comprising the steps of
receiving time domain audio data; -
converting the time domain audio data to frequency domain data in the portable device, wherein the frequency domain data comprises a plurality of frequency bands of different sizes; and processing the frequency domain data according to frequency band size to (1) read an ancillary code and (2) extract a signature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A portable device configured to capture information from an audio signal, comprising:
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an input for receiving time domain audio data; a processor operatively coupled to the input, wherein the processor is configured to convert the time domain audio data to frequency domain data in the portable device, wherein the frequency domain data comprises a plurality of frequency bands of different sizes, and wherein the processor is configured to process the frequency domain data according to frequency band size to (1) read an ancillary code and (2) extract a signature. - View Dependent Claims (12, 13, 14, 15)
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- 16. The portable device recited in claim 16, wherein the processor associates noise with a quotient comprising an associated received energy value of a predetermined frequency band indicating frequency components relative to a noise level associated with frequency bands in proximity to the predetermined frequency band.
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20. A method for obtaining information from an audio signal in a portable device, comprising the steps of:
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receiving time domain audio data; performing a processing operation on the time domain audio data in the portable device to read an ancillary code and extract a signature within a time period, wherein the processing operation comprises converting the time domain audio data to frequency domain data, wherein the frequency domain data comprises a plurality of frequency bands of different sizes.
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Specification