Method and system for enabling audio speed conversion
First Claim
Patent Images
1. A system for processing an audio signal, comprising:
- means for receiving said audio signal and dividing said received audio signal into one or more individual unit cycles;
means for enabling an audio speed conversion operation by one of repeating and removing one or more of said individual unit cycles;
means for detecting one or more pitch periods in said received audio signal, wherein each of said one or more pitch periods includes one or more of said individual unit cycle;
means for generating an average power value for each of said one or more individual unit cycles; and
wherein said detecting means detects said one or more pitch periods in said received audio signal in dependence upon said average power value for each of said one or more individual unit cycles.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides a method and system for processing an audio signal. According to an exemplary method, an audio signal such as a digital voice signal is received and divided into one or more individual unit cycles. An audio speed conversion operation is enabled by repeating or removing one or more of the individual unit cycles. In particular, repeating one or more of the individual unit cycles decreases audio speed, and removing one or more of the individual unit cycles increases audio speed.
17 Citations
24 Claims
-
1. A system for processing an audio signal, comprising:
-
means for receiving said audio signal and dividing said received audio signal into one or more individual unit cycles; means for enabling an audio speed conversion operation by one of repeating and removing one or more of said individual unit cycles; means for detecting one or more pitch periods in said received audio signal, wherein each of said one or more pitch periods includes one or more of said individual unit cycle; means for generating an average power value for each of said one or more individual unit cycles; and wherein said detecting means detects said one or more pitch periods in said received audio signal in dependence upon said average power value for each of said one or more individual unit cycles. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An audio speed conversion system, comprising:
-
a signal detector for receiving an audio signal and dividing said received audio signal into one or more individual unit cycles; circuitry for enabling an audio speed conversion operation by one of repeating and removing one or more of said individual unit cycles; a pitch period detector for detecting one or more pitch periods in said received audio signal, wherein each of said one or more pitch periods includes one or more of said individual unit cycles; an average power value generator for generating an average power value for each of said one or more individual unit cycles; and wherein said pitch period detector detects said one or more pitch periods in said received audio signal in dependence upon said average power value for each of said one or more individual unit cycles. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
-
-
16. A method for processing an audio signal, comprising steps of:
-
receiving said audio signal; dividing said received audio signal into one or more individual unit cycles; enabling an audio speed conversion operation by one of repeating and removing one or more of said individual unit cycles; detecting one or more pitch periods in said received audio signal, wherein each of said one or more pitch periods includes one or more of said individual unit cycles; and wherein said step of detecting one or more pitch periods in said received audio signal is performed in dependence upon an average power value for each of said one or more individual unit cycles. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
-
Specification