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:
- a processor;
- and
- a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, the operations comprising:
- processing an audio signal to reshape the audio signal via a polynomial function of at least degree three into audio waveform data, wherein the polynomial function comprises predetermined coefficients that are determined based on mapping power quantities to the audio waveform data;
- outputting a visible representation of the audio waveform;
- and
- manipulating audio information based on the audio waveform data.
A machine-implemented method, comprising:
- processing audio signal data comprising at least a portion of audio data into reshaped audio waveform data via a cubic polynomial mapping function;
- precomputing coefficients for the polynomial mapping function based on at least one of:
- constraints corresponding to slope information or range information;
- 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.
A machine-implemented method, comprising:
- processing audio signal data comprising at least a portion of audio data into reshaped audio waveform data via a cubic polynomial mapping function, comprising selecting a set of coefficients for the cubic polynomial mapping function corresponding to plotting power quantities or plotting field quantities;
- 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.