公开(公告)号：US20180167727A1

公开(公告)日：2018-06-14

申请号：US15892341

申请日：2018-02-08

申请人： Knowles Electronics, LLC

发明人： Andrzej PAWLOWSKI ,  Kasper STRANGE ,  Kim Spetzler BERTHELSEN ,  Henrik THOMSEN

IPC分类号： H04R3/00 ,  H04R19/04 ,  H04R1/08 ,  G10L21/0232 ,  G10L21/0216

CPC分类号： H04R3/002 ,  G10L21/0232 ,  G10L2021/02163 ,  H03M7/3026 ,  H03M7/3042 ,  H04R1/08 ,  H04R19/04 ,  H04R2201/003 ,  H04R2410/03

摘要： The disclosure relates to a microphone assembly including a multibit analog-to-digital converter configured to generate N-bit samples representative of a microphone signal. The microphone assembly also includes a first digital-to-digital converter configured to generate a corresponding M-bit digital signal based on N-bit digital samples, wherein N and M are positive integers and N>M. The microphone assembly may include a data interface configured to repeatedly receive samples of the M-bit digital signal and write bits of the M-bit digital signal to a data frame.

公开(公告)号：US20190124440A1

公开(公告)日：2019-04-25

申请号：US16228580

申请日：2018-12-20

申请人： Knowles Electronics, LLC

发明人： Andrzej PAWLOWSKI ,  Kasper STRANGE ,  Kim Spetzler BERTHELSEN ,  Henrik THOMSEN

IPC分类号： H04R3/00 ,  G10L21/0232 ,  H04R1/08 ,  H04R19/04

摘要： The disclosure relates to a microphone assembly including a multibit analog-to-digital converter configured to generate N-bit samples representative of a microphone signal. The microphone assembly also includes a first digital-to-digital converter configured to generate a corresponding M-bit digital signal based on N-bit digital samples, wherein N and M are positive integers and N>M. The microphone assembly may include a data interface configured to repeatedly receive samples of the M-bit digital signal and write bits of the M-bit digital signal to a data frame.

公开(公告)号：US20170230750A1

公开(公告)日：2017-08-10

申请号：US15428050

申请日：2017-02-08

申请人： Knowles Electronics, LLC

发明人： Andrzej PAWLOWSKI ,  Kasper STRANGE ,  Kim Spetzler BERTHELSEN ,  Henrik THOMSEN

IPC分类号： H04R3/00 ,  H04R1/08 ,  H04R19/04 ,  G10L21/0232

CPC分类号： H04R3/002 ,  G10L21/0232 ,  G10L2021/02163 ,  H03M7/3026 ,  H03M7/3042 ,  H04R1/08 ,  H04R19/04 ,  H04R2201/003 ,  H04R2410/03

摘要： The disclosure relates to a microphone assembly comprising a multibit analog-to-digital converter configured to receive, sample, and quantize a microphone signal to generate N-bit digital microphone samples representative of the microphone signal at a first sampling frequency. The microphone assembly also comprises a first digital-to-digital converter configured to receive, quantize, and noise-shape the N-bit digital microphone samples to generate a corresponding M-bit Pulse Density Modulated (PDM) signal, wherein N and M are positive integers, and N>M. The microphone assembly may comprise a SoundWire compliant data interface configured to repeatedly receive samples of the M-bit PDM signal and write bits of the M-bit PDM signal to a SoundWire data frame.