US 2026/0128031 A1 · METHODS AND SYSTEMS FOR AUDIO PROCESSING

Abstract

A speaker and a microphone may be disposed in separate devices, wherein each of the digital to analog converter that is driving the speaker and the analog to digital converter that drives the microphone are driven by separate clocks. The speaker may be instructed to send (e.g., output) a pilot signal dedicated to synchronization. The microphone may detect the pilot signal, convert it to a digital signal, and an echo canceller (and/or resampler device) may use the digital signal output by the microphone to synchronize the clocks driving the digital to analog converter associated with the speaker device and the analog to digital converter associated with the microphone device. One or more packets containing audio samples may be sent to the speaker and the echo canceller as well as one or more packets sent to the echo canceller from the microphone device may be used to determine clock error.

Claims20

Dependent claims

A method comprising:

causing a first audio device to output an analog form of a pilot signal, wherein the first audio device is associated with a first clock;
causing a second audio device to convert the analog form of the pilot signal to a detected pilot signal, wherein the second audio device is associated with a second clock;
receiving, from the second audio device, the detected pilot signal;
determining, based on a digital form of the pilot signal and the detected pilot signal, a clock error;
and
synchronizing, based on the clock error, the first clock and the second clock.

3 more elements

Dependencies are inferred from the claim text.

Methods and systems for audio processing

Life of this patent

Methods and systems for audio processing

Life of this patent

Abstract

Claims20