Audio waveform display using mapping function
AssigneeHome Box Office, Inc.
InventorHugo Ayala
Life of this patent
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Abstract
The described technology is generally directed towards providing a visible waveform representation of an audio signal, by processing the audio signal with a polynomial (e.g., cubic) mapping function. Coefficients of the polynomial mapping function are predetermined based on constraints (e.g., slope information and desired range of the resultant curve), and whether the plotted audio waveform corresponds to sound field quantities or power quantities. Once the visible representation of the reshaped audio waveform is displayed, audio and/or video editing operations can be performed, e.g., by time-aligning other audio or video with the reshaped audio waveform, and/or modifying the reshaped audio waveform to change the underlying audio data.
Claims20
A system, comprising,
- an audio signal processing component that reshapes an audio signal via a polynomial function of at least degree three into audio waveform data, wherein the polynomial function comprises predetermined coefficients;
- an output component, coupled to the audio signal processing component, that outputs a visible representation of the audio waveform;
- and
- an editing component that manipulates audio information based on the audio waveform data.
A computer-implemented method, comprising,
- selecting an audio signal from audio data;
- mapping the audio signal to a reshaped audio waveform via a polynomial mapping function of at least degree three;
- outputting a visible representation of the reshaped audio waveform;
- and
- receiving editing instructions associated with the reshaped audio waveform.
A machine-readable storage medium, comprising executable instructions that, when executed by a processor facilitate performance of operations, the operations comprising:
- processing an audio signal comprising at least a portion of audio data into reshaped audio waveform data via a cubic polynomial mapping function, wherein the cubic polynomial mapping function comprises predetermined coefficients;
- outputting a visible representation of the reshaped audio waveform in conjunction with first timing information related to the reshaped audio waveform;
- and
- receiving editing information corresponding to second timing information that relates to the first timing information.
Dependencies are inferred from the claim text.