Sound source localization device, sound processing system, and control method of sound source localization device
AssigneeHonda Motor Co., Ltd.
InventorKazuhiro Nakadai
Life of this patent
Estimating the term…
Abstract
A sound source localization device, which has a plurality of sound pickup devices which record a sound signal and specifies a direction of a sound source based on sound signals recorded by at least two sound pickup devices of the sound pickup devices, includes a notification device that notifies information based on an arrangement of the sound pickup devices.
Claims9
A sound source localization device that has a plurality of sound pickup devices which record a sound signal and specifies a direction of a sound source based on sound signals recorded by at least two sound pickup devices of the plurality of sound pickup devices, the sound source localization device comprising:
- a notification device that notifies a user of information based on an arrangement of the plurality of sound pickup devices,
- wherein,
- as the plurality of sound pickup devices,
- n (n is an integer equal to or larger than 2) sound pickup devices are provided on a display section side of the sound source localization device, and
- m (m is an integer equal to or larger than 2) sound pickup devices are provided on an opposite side to the display section,
- wherein a first microphone array is formed by the n sound pickup devices, and
- a second microphone array is formed by the m sound pickup devices, and
- wherein there is further provided:
- a first imaging section provided on the display section side of the sound source localization device;
- a second imaging section provided on the opposite side to the display section;
- a determination section that selects either the first microphone array or the second microphone array based on an image imaged by the first imaging section and an image imaged by the second imaging section;
- and
- a sound source localization section that specifies the direction of the sound source by using a sound signal recorded by the microphone array selected by the determination section.
A sound processing system comprising a sound source localization unit and an information output device, wherein
- the sound source localization unit includes:
- a plurality of sound pickup devices that record a sound signal;
- a sound source localization section that estimates a direction of a sound source by using sounds signal recorded by the plurality of sound pickup devices;
- and
- a transmission section that transmits the direction of the sound source and sound signals recorded by the plurality of sound pickup devices, and
- the information output device includes:
- a reception section that receives information indicating the direction of the sound source and the plurality of sound signals transmitted from the sound source localization unit;
- and
- a sound source separation section that performs sound source processing to separate sound signals for each sound source, based on the information indicating the direction of the sound source and the plurality of sound signals received by the reception section.
A control method of a sound source localization device that has a plurality of sound pickup devices which record a sound signal and specifies a direction of a sound source based on sound signals recorded by at least two sound pickup devices of the plurality of sound pickup devices, the control method comprising:
- a notification procedure of notifying a user of information based on an arrangement of the plurality of sound pickup devices according to a direction of the sound source localization device set by the user, which is detected by a sensor;
- a detection procedure of detecting a signal level of the sound signal respectively recorded by the plurality of sound pickup devices;
- a sound signal selection procedure of selecting a sound signal with the signal level higher than a predetermined value from the sound signals;
- and
- a sound source localization procedure of specifying the direction of the sound source by using the sound signal selected by the sound signal selection procedure.
Dependencies are inferred from the claim text.