公开(公告)号：US20220377181A1

公开(公告)日：2022-11-24

申请号：US17812168

申请日：2022-07-12

Applicant: DSP GROUP LTD.

Inventor： Yaakov CHEN ,  Adoram Erell ,  Dimitri Lvov

IPC: H04M9/08 ,  H04B3/23

Abstract: A first mobile communication device that includes a first microphone, a first speaker, and a first delay unit. The first microphone is configured to (i) receive, during a conference call, a first user first microphone signal from a first user, and (ii) output a first microphone digital signal to the first delay unit. The first user first microphone signal represents audio content outputted by the first user. The first delay unit is configured to delay, by a delay period, the first microphone digital signal to provide a delayed first user first device digital signal. The first mobile communication device is configured to output, to a mixer, the delayed first user first device digital signal. The delay period is determined based on measurements executed by at least one mobile communication device out of the first mobile communication device, a second mobile communication device and a third mobile communication device.

公开(公告)号：US11425261B1

公开(公告)日：2022-08-23

申请号：US15454012

申请日：2017-03-09

Applicant: DSP Group Ltd.

Inventor： Yaakov Chen ,  Adoram Erell ,  Dimitri Lvov

IPC: H04M9/08 ,  H04B3/23 ,  G10L21/0208

Abstract: A mobile communication device that comprises a microphone, a speaker, an input output port and one or more modules; wherein the microphone is configured to receive, during a conference call, (a) an acoustic signal from a first person, and (b) a cross echo from a speaker of another mobile communication device that participates in the conference call, the cross echo is generated as a result of the acoustic signal from the first person; and wherein the one or more modules are configured to cancel the cross echo based, at least in part, of the acoustic signal of the first person.

公开(公告)号：US11120795B2

公开(公告)日：2021-09-14

申请号：US16445226

申请日：2019-06-19

Applicant: DSP Group Ltd.

Inventor： Adoram Erell

IPC: G10L15/22 ,  H04R3/00 ,  G10L21/0224 ,  G10L21/0208

Abstract: A method for noise cancellation, the method may include detecting a voice trigger or receiving an indication regarding an occurrence of a voice trigger; searching, based at least on a timing of occurrence of the voice trigger, for at least one of a noise-period and a voice-period; when finding a noise period then updating one or more noise parameters based on one or more features of sensed audio signals received during the noise period; when finding a voice period then updating one or more voice parameters based on one or more features of sensed audio signals received during the voice period; estimating, based on the one or more noise parameters and the one or more voice parameters, a probability that voice is present at one or more subsequent periods; and cancelling noise at the one or more subsequent periods, based on the voice presence probability.

公开(公告)号：US11792329B2

公开(公告)日：2023-10-17

申请号：US17812168

申请日：2022-07-12

Applicant: DSP GROUP LTD.

Inventor： Yaakov Chen ,  Adoram Erell ,  Dmitri Lvov

IPC: H04M9/08 ,  H04B3/23 ,  G10L21/0208

CPC classification number: H04M9/082 ,  H04B3/23 ,  G10L2021/02082

Abstract: A first mobile communication device that includes a first microphone, a first speaker, and a first delay unit. The first microphone is configured to (i) receive, during a conference call, a first user first microphone signal from a first user, and (ii) output a first microphone digital signal to the first delay unit. The first user first microphone signal represents audio content outputted by the first user. The first delay unit is configured to delay, by a delay period, the first microphone digital signal to provide a delayed first user first device digital signal. The first mobile communication device is configured to output, to a mixer, the delayed first user first device digital signal. The delay period is determined based on measurements executed by at least one mobile communication device out of the first mobile communication device, a second mobile communication device and a third mobile communication device.