Doppler compensation in coaxial and offset speakers
AssigneeAnalog Devices, Inc.
InventorsKenneth MALSKY, Young Han KIM, Miguel A. CHAVEZ
Life of this patent
Estimating the term…
Abstract
There is disclosed in one example an audio processor, including: an audio crossover to separate a first frequency band from a second frequency band, the first frequency band having a lower frequency band than the second frequency band; an excursion estimator to estimate from information of the first frequency band a predicted excursion of a low-frequency driver; an interpolator to interpolate an adjustment to the second frequency band to compensate for the estimated excursion; and circuitry to drive the adjusted second frequency to a receiver.
Claims20
An audio processor, comprising:
- an audio crossover to separate a first frequency band from a second frequency band, the first frequency band having a lower frequency band than the second frequency band;
- an excursion estimator to estimate from information of the first frequency band a predicted excursion of a low-frequency driver;
- an interpolator to interpolate an adjustment to the second frequency band to compensate for the estimated excursion;
- and
- circuitry to drive the adjusted second frequency band to a receiver.
A loudspeaker system, comprising:
- a woofer;
- a tweeter;
- and
- an audio processing circuit configured to:
- separate a low-frequency band from a high-frequency band;
- estimate from the low-frequency band an expected excursion of the woofer in response to the low-frequency band;
- compute an adjustment to the high-frequency band to compensate for reflection of a high-frequency audio signal from the tweeter off of the woofer moving at the estimated excursion;
- drive the low-frequency band to the woofer;
- and
- drive the adjusted high-frequency band to the tweeter.
A method of performing audio processing for a loudspeaker system, comprising:
- separating a first frequency band from a second frequency band, the first frequency band having a lower frequency band than the second frequency band;
- estimating from the first frequency band a predicted excursion of a low-frequency driver;
- interpolating an adjustment to the second frequency band to compensate for the predicted excursion;
- and
- driving the adjusted second frequency band to a high-frequency driver.
Dependencies are inferred from the claim text.