US 2026/0169160 A1 · Hybrid Waveform Optimization

Abstract

This document describes systems and techniques for hybrid waveform optimization. In aspects, a computing device emits a hybrid waveform having overlapping up-chirp and down-chirp waveforms to create a continuous waveform that mitigates undesirable clicking sounds. The device may be configured to process reflections of the up-chirp waveforms and/or down-chirp waveforms to discern presence, proximity, relative movement, and/or another aspect of an object. An amplitude of the up-chirp and/or down-chirp waveforms may be scaled where the waveforms overlap so that an amplitude of the hybrid waveform is limited to fluctuate between a lower amplitude limit and an upper amplitude limit.

Claims21

Dependent claims

A method comprising:

emitting output audio signals, the output audio signals comprising a hybrid waveform that propagates within an ultrasonic frequency range, the hybrid waveform configured to span at least a period and including a combination of:
a first waveform having a first varying frequency, a first phase, and a first period;
and
a second waveform having a second varying frequency varying inversely to the first varying frequency, a second phase, and a second period, the second waveform at least partially overlapping the first waveform;
receiving input audio signals within the ultrasonic frequency range, the input audio signals comprising reflections of the hybrid waveform off an object;
and
processing the input audio signals to determine at least one of a presence, a proximity, a relative movement, or a feature of the object.

4 more elements

A computer-readable storage medium comprising instructions that, when executed by one or more processors, cause the one or more processors to perform operations including:

emitting output audio signals, the output audio signals comprising a hybrid waveform that propagates within an ultrasonic frequency range, the hybrid waveform configured to span at least a period, an amplitude of the hybrid waveform being scaled such that the hybrid waveform fluctuates between a lower amplitude limit and an upper amplitude limit, the hybrid waveform including a combination of:
a first waveform having a first varying frequency, a first phase, and a first period;
and
a second waveform having a second varying frequency varying inversely to the first varying frequency, a second phase, and a second period, the second waveform at least partially overlapping the first waveform;
receiving input audio signals within the ultrasonic frequency range, the input audio signals comprising reflections of the hybrid waveform off an object;
and
processing the input audio signals to determine at least one of a presence, a proximity, a relative movement, or a feature of the object.

4 more elements

Dependencies are inferred from the claim text.

Hybrid Waveform Optimization

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Hybrid Waveform Optimization

Life of this patent

Abstract

Claims21