Method and apparatus for detecting relative location between devices

An apparatus, comprising:

• a memory storing instructions that are executable by at least one processor;
• and
• the at least one processor coupled to the memory, wherein when the at least one processor executes the instructions, the apparatus performs operations comprising:
• obtaining a first target audio signal obtained by a first microphone of a second device, wherein the first target audio signal is obtained based on a first audio signal emitted by a first speaker of a first device and a second audio signal emitted by a second speaker of the first device;
• determining a first audio segment and a second audio segment based on a first target moment and the first target audio signal, wherein the first target moment is determined in the first target audio signal based on a target amplitude, the first audio segment is a segment that is in the first target audio signal and is related to the first audio signal, the second audio segment is in the first target audio signal and is related to the second audio signal, and in the first target audio signal, a time range corresponding to the first audio segment does not overlap a time range corresponding to the second audio segment;
• and
• separately searching for the first audio segment and the second audio segment to obtain a first arrival moment and a second arrival moment, wherein the first arrival moment corresponds to a first target wave peak, the second arrival moment corresponds to a second target wave peak, the first target wave peak has earliest receiving time in wave peaks whose signal amplitudes are greater than a first preset amplitude in the first audio segment, and the second target wave peak has earliest receiving time in wave peaks whose signal amplitudes are greater than a second preset amplitude in the second audio segment;
• and
• determining a relative location between the first device and the second device based on the first arrival moment and the second arrival moment;
• wherein determining the first audio segment and the second audio segment based on the first target moment and the first target audio signal comprises:
• determining the first audio segment from the first target audio signal based on the first target moment, a distance between the first speaker and the second speaker, and a sampling frequency of the first microphone;
• and
• determining the second audio segment from the first target audio signal based on the first target moment, the distance between the first speaker and the second speaker, the sampling frequency of the first microphone, and a time interval between a moment at which the first speaker generates the first audio signal and a moment at which the second speaker generates the second audio signal;
• wherein determining the first audio segment from the first target audio signal based on the first target moment, the distance between the first speaker and the second speaker, and the sampling frequency of the first microphone, comprises:
• determining a first time range based on the first target moment, the distance between the first speaker and the second speaker of the first device, and the sampling frequency of the first microphone of the second device, wherein a start moment of the first time range is ind max−2×(d/v)×f, an end moment of the first time range is ind max+2×(D/v)×f, ind max is the first target moment, d is a first preset distance, D is the distance between the first speaker and the second speaker, v is a sound velocity, and f is the sampling frequency of the first microphone;
• and
• determining the first audio segment from the first target audio signal based on the first time range.

An apparatus, comprising:

• a memory storing instructions that are executable by at least one processor;
• and
• the at least one processor coupled to the memory, wherein when the at least one processor executes the instructions, the apparatus performs operations comprising:
• obtaining a first target audio signal obtained by a first microphone of a second device, wherein the first target audio signal is obtained based on a first audio signal emitted by a first speaker of a first device and a second audio signal emitted by a second speaker of the first device;
• determining a first audio segment and a second audio segment based on a first target moment and the first target audio signal, wherein the first target moment is determined in the first target audio signal based on a target amplitude, the first audio segment is in the first target audio signal and is related to the first audio signal, the second audio segment is in the first target audio signal and is related to the second audio signal, and in the first target audio signal, a time range corresponding to the first audio segment does not overlap a time range corresponding to the second audio segment;
• separately searching for the first audio segment and the second audio segment to obtain a first arrival moment and a second arrival moment, wherein the first arrival moment corresponds to a first target wave peak, the second arrival moment corresponds to a second target wave peak, the first target wave peak has an earliest receiving time in wave peaks whose signal amplitudes are greater than a first preset amplitude in the first audio segment, and the second target wave peak has an earliest receiving time in wave peaks whose signal amplitudes are greater than a second preset amplitude in the second audio segment;
• and
• determining a relative location between the first device and the second device based on the first arrival moment and the second arrival moment;
• wherein determining the first audio segment and the second audio segment based on the first target moment and the first target audio signal comprises:
• determining the first audio segment from the first target audio signal based on the first target moment, a distance between the first speaker and the second speaker, and a sampling frequency of the first microphone;
• and
• determining the second audio segment from the first target audio signal based on the first target moment, the distance between the first speaker and the second speaker, the sampling frequency of the first microphone, and a time interval between a moment at which the first speaker generates the first audio signal and a moment at which the second speaker generates the second audio signal;
• wherein determining the second audio segment from the first target audio signal based on the first target moment, the distance between the first speaker and the second speaker, the sampling frequency of the first microphone, and the time interval between the moment at which the first speaker generates the first audio signal and the moment at which the second speaker generates the second audio signal comprises:
• determining a second time range based on the first target moment, the distance between the first speaker and the second speaker, the sampling frequency of the first microphone, and the time interval, wherein a start moment of the second time range is ind_max−2×(d/v)×f−T1, an end moment of the second time range is ind_max+2×(D/v)×f−T1, ind_max is the first target moment, d is a first preset distance, D is the distance between the first speaker and the second speaker, v is a sound velocity, f is a sampling frequency of the first microphone, and T1 is the time interval;
• and
• determining the second audio segment from the first target audio signal based on the second time range.