US 2025/0225970 A1Published application

Signal processing method and acoustic system

AssigneeShenzhen Shokz Co., Ltd.

InventorsChenyang WU, Le XIAO, Fengyun LIAO, Xin QI

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Abstract

A signal processing method and an acoustic system are provided. When M sound sensors in a sound sensor module are in operation, they collect an ambient sound and generate M sound pickup signals. The ambient sound comprises a first sound from a speaker and a second sound from a target sound source. A signal processing circuit can perform a filtering operation on the M sound pickup signals based on M sets of target filtering parameters to obtain M filtered signals, and perform a synthesis operation on the M filtered signals to obtain a composite signal, and then perform a target operation on the composite signal. Since the M sets of target filtering parameters are configured to minimize a signal component from the speaker in the composite signal under a target constraint.

Claims20

Dependent claims

An acoustic system, comprising:

a speaker, configured to receives a driving signal and converts the driving signal into a first sound during operation;
a sound sensor module, wherein the sound sensor module comprises M sound sensors and is configured to pick up an ambient sound and generate M sound pickup signals, wherein the ambient sound comprises the first sound and a second sound from a target sound source, and M is an integer greater than 1;
and
a signal processing circuit, connected to the sound sensor module, wherein during operation, the signal processing circuit is configured to perform:
obtaining M sound pickup signals,
performing a filtering operation on the M sound pickup signals based on M sets of target filtering parameters to obtain M filtered signals, and performing a synthesis operation on the M filtered signals to obtain a composite signal, wherein the M sets of target filtering parameters are configured to minimize a signal component corresponding to the first sound in the composite signal under a target constraint, and
performing a target operation on the composite signal.

4 more elements

A signal processing method, comprising:

obtaining M sound pickup signals, wherein the M sound pickup signals are respectively obtained by M sound sensors in a sound sensor module of an acoustic system collecting an ambient sound during operation, the ambient sound comprises a first sound and a second sound, the first sound is a sound from a speaker in the acoustic system, and the second sound is a sound from a target sound source, wherein M is an integer greater than 1;
performing a filtering operation on the M sound pickup signals based on M sets of target filtering parameters to obtain M filtered signals, and performing a synthesis operation on the M filtered signals to obtain a composite signal, wherein the M sets of target filtering parameters are configured to minimize a signal component corresponding to the first sound in the composite signal under a target constraint;
and
performing a target operation on the composite signal.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 19/089,091Filed 25 Mar 2025
Priority: 15 May 2023
Published: 10 Jul 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

G10K 11/17819
Characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms: between the…
H04R 3/005
Circuits for transducers: for combining the signals of two or more microphones
G10K 11/17853
Methods, e.g. algorithms; Devices: of the filter
H04R 1/1083
Earpieces; Attachments therefor ; Earphones; Monophonic headphones: reduction of ambient noise

Family

Application19/089,091Continuation
US 2025/0225970 A1This patent

From the US filing history. Foreign family members aren’t listed.

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