公开(公告)号：US20170193762A1

公开(公告)日：2017-07-06

申请号：US14985080

申请日：2015-12-30

Applicant: Google Inc.

Inventor： Daniel Adam Warren ,  Lawrence Frederick Heyl ,  Dietrich Ho ,  Morakinyo John Aina ,  Ian C. Smith ,  William Saperstein ,  Bhaskar Vadathavoor

IPC: G08B3/10 ,  H04R17/00

CPC classification number: G08B3/10 ,  G08B29/18 ,  H04R3/00 ,  H04R17/00 ,  H04R2430/01

Abstract: Systems for ensuring an audible alarm circuit sounds at a minimum magnitude of loudness are provided. Different circuitry embodiments discussed herein are each capable of assisting the audible alarm circuit in maintaining a minimum loudness threshold. Audible alarm circuit operation optimization can be achieved using embodiments that fall within anyone of four general categories: compensation networks, direct drive, dynamic tuning, and microphone feedback based dynamic tuning. Use of such circuitry can increase production yields by compensating for manufacturing variations of alarm components and aging characteristics of the components.

公开(公告)号：US10121333B2

公开(公告)日：2018-11-06

申请号：US15727059

申请日：2017-10-06

Applicant: Google Inc.

Inventor： Daniel Adam Warren ,  Lawrence Frederick Heyl ,  Dietrich Ho ,  Morakinyo John Aina ,  Ian C. Smith ,  William Saperstein ,  Bhaskar Vadathavoor

IPC: G08B25/08 ,  G08B3/10 ,  H04R17/00

Abstract: Systems for ensuring an audible alarm circuit sounds at a minimum magnitude of loudness are provided. Different circuitry embodiments discussed herein are each capable of assisting the audible alarm circuit in maintaining a minimum loudness threshold. Audible alarm circuit operation optimization can be achieved using embodiments that fall within anyone of four general categories: compensation networks, direct drive, dynamic tuning, and microphone feedback based dynamic tuning. Use of such circuitry can increase production yields by compensating for manufacturing variations of alarm components and aging characteristics of the components.

公开(公告)号：US20180033258A1

公开(公告)日：2018-02-01

申请号：US15727059

申请日：2017-10-06

Applicant: Google Inc.

Inventor： Daniel Adam Warren ,  Lawrence Frederick Heyl ,  Dietrich Ho ,  Morakinyo John Aina ,  Ian C. Smith ,  William Saperstein ,  Bhaskar Vadathavoor

IPC: G08B3/10 ,  H04R17/00

CPC classification number: G08B3/10 ,  G08B29/18 ,  H04R3/00 ,  H04R2430/01

Abstract: Systems for ensuring an audible alarm circuit sounds at a minimum magnitude of loudness are provided. Different circuitry embodiments discussed herein are each capable of assisting the audible alarm circuit in maintaining a minimum loudness threshold. Audible alarm circuit operation optimization can be achieved using embodiments that fall within anyone of four general categories: compensation networks, direct drive, dynamic tuning, and microphone feedback based dynamic tuning. Use of such circuitry can increase production yields by compensating for manufacturing variations of alarm components and aging characteristics of the components.