Adaptive Audio Transposition for Personalized Karaoke Vocal Ranges
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Solution Overview
Problem
Karaoke systems often force users to sing at pitches beyond their capabilities, leading to vocal strain and reduced performance quality, as existing audio transposition methods do not adequately account for individual vocal ranges.
Innovation Solution
An electronic device and method that separates audio input signals into vocal and accompaniment components, and transposes the accompaniment based on a pitch ratio derived from comparing the user's vocal range to the original singer's range, using blind source separation and pitch analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If audio transposition is applied to match original pitch range, then pitch accuracy is improved, but singer fatigue increases and vocal cord damage risk increases
Solution Approach 1:
The system dynamically changes the transposition parameter based on the user's vocal range characteristics. By analyzing the user's pitch range and comparing it with the original song's pitch range, the system automatically adjusts the transposition value to optimize both pitch accuracy and vocal comfort, resolving the contradiction between maintaining original pitch fidelity and preventing vocal strain.
2Measurement precision
If fixed pitch transposition is used, then pitch accuracy is improved, but adaptability to individual users deteriorates
Solution Approach 1:
The system transitions from static fixed pitch transposition to dynamic adaptive transposition. By continuously analyzing the user's vocal characteristics and adjusting the transposition value in real-time, the system maintains pitch accuracy while adapting to each user's unique vocal range, thereby resolving the contradiction between precision and adaptability.
Solution Approach 2:
The system implements feedback by analyzing the user's vocal performance and using this information to adjust the transposition value. The pitch range analysis provides feedback about the user's capabilities, which is then used to optimize the transposition setting, achieving both accuracy and user-specific adaptability.
3Adaptability or versatility
If manual pitch adjustment is required, then adaptability to user capabilities is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs self-service by automatically analyzing the user's vocal range and determining the optimal transposition value without requiring manual user input. The pitch range analysis and transposition calculation are performed automatically, making the system both adaptive to user capabilities and easy to operate, thus resolving the contradiction between adaptability and ease of use.
Data Source
AI summary
An electronic device comprising circuitry configured to separate by audio source separation a first audio input signal into a first vocal signal and an accompaniment, and to transpose an audio output signal by a transposition value based on a pitch ratio, wherein the pitch ratio is based on comparing a first pitch range of the first vocal signal and a second pitch range of the second vocal signal.