Headphone audio enhancement system
First Claim
1. A method for audio enhancement, the method comprising:
- under control of a hardware processor;
receiving a difference signal obtained from left and right audio inputs;
applying a gain to the difference signal to obtain a gained output;
applying a notch filter to the difference signal to produce a filtered difference signal; and
summing the gained output and the filtered difference signal to produce a spatially enhanced signal.
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Abstract
An audio enhancement system can provide spatial enhancement, low frequency enhancement, and/or high frequency enhancement for headphone audio. The spatial enhancement can increase the sense of spaciousness or stereo separation between left and right headphone channels. The low frequency enhancement can enhance bass frequencies that are unreproducible or attenuated in headphone speakers by emphasizing harmonics of the low bass frequencies. The high frequency enhancement can emphasize higher frequencies that may be less reproducible or poorly tuned for headphone speakers. In some implementations, the audio enhancement system provides a user interface that enables a user to control the amount (e.g., gains) of each enhancement applied to headphone input signals. The audio enhancement system may also be designed to provide one or more of these enhancements more effectively when headphones with good coupling to the ear are used.
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Citations
10 Claims
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1. A method for audio enhancement, the method comprising:
under control of a hardware processor; receiving a difference signal obtained from left and right audio inputs; applying a gain to the difference signal to obtain a gained output; applying a notch filter to the difference signal to produce a filtered difference signal; and summing the gained output and the filtered difference signal to produce a spatially enhanced signal. - View Dependent Claims (2, 3, 4, 5)
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6. A system for audio enhancement, the system comprising:
a hardware processor configured to execute a spatial enhancer to; receive a difference signal obtained from left and right audio inputs; apply a gain to the difference signal to obtain a gained output; apply a notch filter to the difference signal to produce a filtered difference signal; and sum the gained output and the filtered difference signal to produce a spatially enhanced signal. - View Dependent Claims (7, 8, 9, 10)
Specification