US 11,682,375 B2
Speaker system, sound processing device, sound processing method, and recording medium
Udeni Sangakkara, Osaka (JP); Takuto Takizawa, Osaka (JP); Eiji Saitou, Osaka (JP); Yukiharu Wakiguchi, Osaka (JP); and Minoru Umesako, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/423,065
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
PCT Filed Aug. 6, 2019, PCT No. PCT/JP2019/030891
§ 371(c)(1), (2) Date Jul. 14, 2021,
PCT Pub. No. WO2021/005806, PCT Pub. Date Jan. 14, 2021.
Claims priority of provisional application 62/871,605, filed on Jul. 8, 2019.
Prior Publication US 2022/0068251 A1, Mar. 3, 2022
Int. Cl. G10K 11/178 (2006.01); G10L 21/02 (2013.01); H04R 1/02 (2006.01)
CPC G10K 11/178 (2013.01) [G10L 21/02 (2013.01); H04R 1/02 (2013.01); G10K 2210/108 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A speaker system, comprising:
a wearable speaker to be worn by a talker, the wearable speaker being capable of outputting a first sound and a second sound which is different from the first sound, the first sound being a voice of a communication partner of the talker;
a microphone which picks up a voice of the talker; and
a sound processing device which processes a sound output from the wearable speaker and a sound picked up by the microphone, wherein:
the wearable speaker includes at least two speaker units,
the microphone includes at least one microphone unit, and
the sound processing device:
obtains a first signal which indicates the first sound via a first interface;
obtains a second signal which indicates the second sound via a second interface which is different from the first interface;
generates a reference signal by synthesizing the first signal and the second signal;
outputs the first signal and the second signal to the at least two speaker units;
obtains a sound pickup signal including the voice of the talker from the at least one microphone unit;
performs, on the sound pickup signal, a cancellation process of cancelling a component of a sound output from the at least two speaker units by using the reference signal; and
outputs the sound pickup signal on which the cancellation process has been performed,
the at least two speaker units include a first speaker unit positioned beside or behind the talker and a second speaker unit positioned in front of the talker when the wearable speaker is worn by the talker, and
the reference signal includes the first signal outputted to the second speaker unit, and does not include the first signal outputted to the first speaker unit.