Identical conversation detection method and apparatus
First Claim
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1. A method of detecting a disallowed communication session between a first person using a first communication device and a second person using a second communication device, comprising:
- recording first audio captured at the first communication device to produce a first recording;
recording second audio captured at the second communication device to produce a second recording;
generating a first signature of the first recording, wherein the first signature identifies one or more speech formants in the first audio;
generating a second signature of the second recording, wherein the second signature identifies one or more speech formants in the in the second audio;
identifying an overlapping timespan in the first recording and the second recording;
correlating a portion of the first signature generated from a portion of the first audio recorded during the overlapping timespan and a portion of the second signature generated from a portion of the second audio recorded during the overlapping timespan to determine whether a portion of the overlapping timespan of the first recording and the second recording are correlated greater than a predetermined threshold;
signaling the detection of the disallowed communication session between the first person using the first communication device and the second person using the second communication device, wherein the correlated portion of the overlapping timespan corresponds to a disallowed conversation between the first person and the second person; and
displaying, on a computer display, a notification of the detected disallowed communication session in response to the signaled detection.
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Abstract
An automated system is disclosed for detecting situations in which identical segments of conversation appear within two different recordings. The system automatically detects where within each of two audio recordings an identical conversation segment begins and ends, thus enabling detection of conversations where multiple prison inmates participated in a conference call.
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Citations
20 Claims
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1. A method of detecting a disallowed communication session between a first person using a first communication device and a second person using a second communication device, comprising:
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recording first audio captured at the first communication device to produce a first recording; recording second audio captured at the second communication device to produce a second recording; generating a first signature of the first recording, wherein the first signature identifies one or more speech formants in the first audio;
generating a second signature of the second recording, wherein the second signature identifies one or more speech formants in the in the second audio;identifying an overlapping timespan in the first recording and the second recording; correlating a portion of the first signature generated from a portion of the first audio recorded during the overlapping timespan and a portion of the second signature generated from a portion of the second audio recorded during the overlapping timespan to determine whether a portion of the overlapping timespan of the first recording and the second recording are correlated greater than a predetermined threshold; signaling the detection of the disallowed communication session between the first person using the first communication device and the second person using the second communication device, wherein the correlated portion of the overlapping timespan corresponds to a disallowed conversation between the first person and the second person; and displaying, on a computer display, a notification of the detected disallowed communication session in response to the signaled detection. - View Dependent Claims (2, 3, 4, 5, 11, 12, 15, 16, 17)
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6. A system for detecting a disallowed communication session between a first person using a first communication device and a second person using a second communication device, the comprising:
one or more processors; and
a memory device coupled to the one or more processors, the memory device storing computer-readable instructions that, upon execution by the one or more processors, cause the system to;record first audio captured at the first communication device to produce a first recording; record second audio captured at the second communication device to produce a second recording; generate a first signature of the first recording, wherein the first signature identifies one or more speech formants in the in the first audio generate a second signature of the second recording, wherein the second signature identifies one or more speech formants in the second audio; identify an overlapping timespan in the first recording and the second recording; correlate a portion of the first signature generated from a portion of the first audio recorded during the overlapping timespan and a portion of the second signature generated from a portion of the second audio recorded during the overlapping timespan to determine whether a portion of the overlapping timespan of the first recording and the second recording are correlated greater than a predetermined threshold; signal the detection of the disallowed communication session between the first person using the first communication device and the second person using the second communication device, wherein the correlated portion of the overlapping timespan corresponds to a disallowed conversation between the first person and the second person; and display, on a computer display, a notification of the detected disallowed communication session in response to the signaled detection. - View Dependent Claims (7, 8, 9, 10, 13, 14, 18, 19, 20)
Specification