Abstract: Harmonic distortion residual echo suppression (HDRES) technique embodiments are presented which act to suppress the residual echo remaining after a near-end microphone signal has undergone AEC, including harmonic distortion in the signal that was caused by the speaker audio signal playback. In general, an AEC module is employed which suppresses some parts of the speaker audio signal found in a near-end microphone signal and generates an AEC output signal. A HDRES module then inputs the AEC output signal and the speaker audio signal, and suppresses at least a portion of a residual part of the speaker audio signal that was left unsuppressed by the AEC module. This includes at least a portion of the harmonic distortion exhibited in the AEC output signal.

Abstract: Harmonic distortion residual echo suppression (HDRES) technique embodiments are presented which act to suppress the residual echo remaining after a near-end microphone signal has undergone AEC, including harmonic distortion in the signal that was caused by the speaker audio signal playback. In general, an AEC module is employed which suppresses some parts of the speaker audio signal found in a near-end microphone signal and generates an AEC output signal. A HDRES module then inputs the AEC output signal and the speaker audio signal, and suppresses at least a portion of a residual part of the speaker audio signal that was left unsuppressed by the AEC module. This includes at least a portion of the harmonic distortion exhibited in the AEC output signal.

Abstract: A method for protecting software is provided, where source code for the software has a first directive marking an encryption beginning point and a second directive marking an encryption end point. The method contains the steps of: processing the source code to identify a block of code between the first and second directives; compiling the source code to produce a binary file; generating a valid key and a random string; encrypting the random string with the key to obtain a first encrypted value; encrypting a portion of the binary file corresponding to the block of code with the valid key to obtain a second encrypted value; and replacing the portion of the binary file corresponding to the block of code with the second encrypted value and code that can decrypt the second encrypted value during execution of the software.

Abstract: A system and method are provided for analyzing audit log data. Text strings from a plurality of devices are stored in a log database, each of the text strings being indicative of an audit event in the respective device. At least a portion of the text strings are retrieved from the log database and the retrieved text strings are parsed according to pre-defined parsing rules. Each of the retrieved text strings is mapped to a respective audit event. The retrieved text strings are mapped based on the respective audit event. Representations of the filtered text strings are displayed on a grid using color-coded areas. The horizontal axis of the grid represents a first time scale and the vertical axis of the grid represents a second time scale different from the first time scale.

Abstract: A security framework is provided for protecting software. The source code for the software has directives marking portions of the source code to be modified or encrypted. The source code is modified using a random factor based on the directives. The source code is compiled to produce a binary file. Source code starting and ending lines and binary file positions of each of the blocks to be encrypted are stored. Portions of the binary file that correspond to each of these blocks are encrypted. Each of these blocks is decrypted when a function inside the block is required during execution of the software.