Computer-implemented system and method for user-controlled processing of audio signals
A computer-implemented system and method for user-controlled processing of audio signals is provided. An audio signal including a reference segment and a segment preceding the reference segment is obtained. A value q is received from a user. Audio buffers in the preceding segment are defined, each having a width of N samples and a starting point a unique number of samples away from the preceding segment's start, based on a division of N by q. One or more of the buffers are transformed into discrete Fourier transform (DFT) buffers. A signature of the signal is generated using at least a portion of the reference segment and at least one of the DFT buffers. A new audio signal is received and a DFT for the audio signal is generated. The new audio signal is determined to match the audio signal based on a comparison of the DFT to the signature.
1. A computer-implemented system for user-controlled processing of audio signals comprising:
a computing device comprising a processor and a memory coupled to the processor, the computing device configured to connect to a voicemail server via at least one communication path, the computing device further comprising:
a signal module to receive from the voicemail server via the at least one communication path an audio signal comprising a reference segment and a segment preceding the reference segment;
a value module to receive a value q from a user for determining starting points of audio buffers comprised in the preceding segment;
a buffer module to define the audio buffers in the preceding segment, each having a width of N audio samples and the starting point that is a unique number of samples away from a start of the preceding segment, based on a result of a division of N by q;
a transformation module to transform one or more of the buffers into discrete Fourier transform (DFT) buffers;
a signature module to generate a signature of the audio signal using at least a portion of the reference segment and at least one of the DFT buffers, comprising:
an identification module to identify a plurality of values comprised in the preceding segment DFT buffers;
a mean module to calculate a mean of the values in the preceding segment DFT buffers;
a multiplication module to multiply the mean by a mean factor;
a comparison module to compare each of the values to a result of the multiplication; and
a use module to use those of the values that exceed the result of the multiplication in the generation of the signature;
a receipt module to receive from the voicemail server via the at least one communication path a new audio signal and to generate at least one DFT for the new audio signal;
a matching module to determine that the new audio signal matches the audio signal based on a comparison of the new audio signal DFT to the signature; and
an action module to perform a predefined action with respect to the voicemail server upon determining that the new audio signal matches the signature.
2. A system according to claim 1 , further comprising:
a sample module to determine the unique number of samples for one of the audio buffers, comprising:
a number module to determine a number X of the audio buffers having starting points closer to the start than the starting point of the one audio buffer; and
a multiplication module to obtain the unique number by multiplying X by the result of the division.
3. A system according to claim 1 , wherein at least two of the audio buffers share one or more of the audio samples.
4. A system according to claim 1 , further comprising:
a mean factor module to receive the mean factor from the user.
5. A system according to claim 1 , further comprising:
a division module to divide the reference segment into audio buffers and to generate DFT buffers from the reference segment audio buffers;
a comparison module to compare at least one of the reference segment DFT buffers to other reference segment DFT buffers and to the preceding segment DFT buffers; and
a selection module to select one of the reference segment DFT buffers as the signature based on the comparisons; and
a display module to display the selected DFT buffer.
6. A system according to claim 5 , further comprising:
a representation module to display a visual representation of the audio signal; and
a delineation module to delineate the reference segment on the representation.
7. A system according to claim 6 , further comprising:
a coefficient module to generate one or more correlation coefficients based on the comparison of the selected DFT buffer to each of the preceding segment DFT buffers;
a generation module to generate one or more correlation coefficients based on the comparison of the selected DFT buffer to each of the other reference segment DFT buffers;
an overlay module to overlay a representation of one or more of the correlation coefficients on the displayed representation of the audio signal.
8. A system according to claim 1 , further comprising:
a label module to associate the signature with one of a plurality of labels, the label comprising instructions to compare an additional audio signal to one or more additional signatures associated with a different label upon the new audio signal matching the signature.
9. A computer-implemented method for user-controlled processing of audio signals, comprising the steps of:
receiving by a computing device comprising a processor and a memory coupled to the processor an audio signal from a voicemail server connected to the computing device via at least one communication path, the audio signal comprising a reference segment and a segment preceding the reference segment;
receiving by the computing device a value q from a user for determining starting points of audio buffers comprised in the preceding segment;
defining by the computing device the audio buffers in the preceding segment, each having a width of N audio samples and the starting point that is a unique number of samples away from a start of the preceding segment, based on a result of a division of N by q;
transforming by the computing device one or more of the buffers into discrete Fourier transform (DFT) buffers;
generating by the computing device a signature of the audio signal using at least a portion of the reference segment and at least one of the DFT buffers, further comprising:
identifying a plurality of values comprised in the preceding segment DFT buffers;
calculating a mean of the values in the preceding segment DFT buffers;
multiplying the mean by a mean factor;
comparing each of the values to a result of the multiplication; and
using those of the values that exceed the result of the multiplication in the generation of the signature;
receiving by the computing device a new audio signal from the voicemail server via the at least one communication path and generating at least one DFT for the new audio signal;
determining by the computing device that the new audio signal matches the audio signal based on a comparison of the new audio signal DFT to the signature; and
performing a predefined action with respect to the voicemail server upon determining that the new audio signal matches the signature.
10. A method according to claim 9 , further comprising:
determining the unique number of samples for one of the audio buffers, comprising:
determining a number X of the audio buffers having starting points closer to the start than the starting point of the one audio buffer; and
obtaining the unique number by multiplying X by the result of the division.
11. A method according to claim 9 , wherein at least two of the audio buffers share one or more of the audio samples.
12. A method according to claim 9 , further comprising:
receiving the mean factor from the user.
13. A method according to claim 9 , further comprising:
dividing the reference segment into audio buffers and generating DFT buffers from the reference segment audio buffers;
comparing at least one of the reference segment DFT buffers to other reference segment DFT buffers and to the preceding segment DFT buffers; and
selecting one of the reference segment DFT buffers as the signature based on the comparisons; and
displaying the selected DFT buffer.
14. A method according to claim 13 , further comprising:
displaying a visual representation of the audio signal; and
delineating the reference segment on the representation.
15. A method according to claim 14 , further comprising:
generating one or more correlation coefficients based on the comparison of the selected DFT buffer to each of the preceding segment DFT buffers;
generating one or more correlation coefficients based on the comparison of the selected DFT buffer to each of the other reference segment DFT buffers;
overlaying a representation of one or more of the correlation coefficients on the displayed representation of the audio signal.
16. A method according to claim 9 , further comprising:
associating the signature with one of a plurality of labels, the label comprising instructions to compare an additional audio signal to one or more additional signatures associated with a different label upon the new audio signal matching the signature.