Pitch Shifting Frequencies via Selective Frequency Range Editing
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Solution Overview
Problem
Current pitch shifting algorithms are not designed to apply specific frequency range edits, requiring entire frequency ranges to be shifted by the same ratio, which limits precise tuning and editing capabilities in audio data.
Innovation Solution
A computer-implemented method that allows users to select and edit specific frequency ranges within a visual representation of audio data by receiving user inputs to modify time and frequency ranges, enabling precise frequency edits without shifting entire ranges, and allowing for direct editing within the initial display with context preservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If current pitch shifting algorithms are used to edit a specific frequency range, then the entire frequency range must be shifted by the same ratio, but this prevents precise tuning of specific frequencies
Solution Approach 1:
The patent divides the frequency spectrum into multiple selectable ranges, allowing users to isolate and edit specific frequency bands independently. The frequency spectrum is segmented horizontally across different frequency ranges, enabling precise targeting of particular frequencies without affecting other ranges. This segmentation resolves the contradiction by providing both precision (through focused editing of specific ranges) and flexibility (through multiple selectable range options).
Solution Approach 2:
The patent applies different pitch shifting ratios to different frequency ranges, allowing each range to be edited with its own specific ratio. This local quality approach enables precise tuning of specific frequencies by assigning customized editing parameters to each frequency range, rather than applying a uniform ratio across the entire spectrum. This directly resolves the contradiction between precision and flexibility.
2Reliability
If a copy of the frequency range is created for editing, then edits can be made without affecting the original, but this increases file complexity and requires additional processing steps
Solution Approach 1:
The patent extracts the selected frequency range from the original audio file and applies edits directly to that extracted portion. By taking out only the necessary frequency range for editing rather than creating a complete copy of the file, the system maintains edit safety while minimizing file structure complexity. The extracted range can be processed independently and then reintegrated, providing reliability without excessive complexity.
3Manufacturing precision
If the entire frequency range is edited, then consistency across the spectrum is maintained, but this prevents targeted editing of specific frequencies
Solution Approach 1:
The patent implements dynamic selection of frequency ranges for editing, allowing users to adaptively choose which ranges to edit based on the specific audio content and requirements. The system can dynamically adjust which frequency ranges are selected and applied different ratios, providing both precision targeting and operational flexibility. This dynamic approach resolves the contradiction by making the editing process adaptable rather than static.
Data Source
AI summary
System and methods for audio editing are provided. In one implementation, a computer-implemented method is provided. The computer-implemented method includes presenting a visual representation of digital audio data as a frequency spectrum including a first visual region corresponding to a first time period and a first frequency range in the digital audio data. A first user input identifies a second visual region within the first visual region and corresponding to a second time period and a second frequency range. A second user input specifies one or more frequency modifications to the second visual region. The second time period and the second frequency range corresponding to the second visual region are modified creating a modified second visual region. The modified second visual region is mixed into the first visual region creating edited digital audio data.