公开(公告)号：US11716579B2

公开(公告)日：2023-08-01

申请号：US17735048

申请日：2022-05-02

Applicant: STMICROELECTRONICS S.r.I.

Inventor： Marco Veneri ,  Alessandro Morcelli

IPC: H04R19/04 ,  H04R23/00 ,  H04R3/06 ,  H04R1/04 ,  H04R3/00 ,  H04R19/00 ,  G10L25/78

CPC classification number: H04R23/00 ,  H04R1/04 ,  H04R3/00 ,  H04R3/06 ,  H04R19/005 ,  H04R19/04 ,  H04R23/006 ,  G10L25/78 ,  H04R2201/003

Abstract: Described herein is a MEMS acoustic transducer device provided with a micromechanical detection structure that detects acoustic-pressure waves and supplies a transduced electrical quantity, and with an integrated circuit operatively coupled to the micromechanical detection structure and having a reading module that generates at output an audio signal as a function of the transduced electrical quantity. The integrated circuit is further provided with a recognition module, which recognizes a of sound activity event associated to the transduced electrical quantity. The MEMS acoustic transducer has an output that supplies at output a data signal that carries information regarding recognition of the sound activity event.

公开(公告)号：US20140094944A1

公开(公告)日：2014-04-03

申请号：US14038377

申请日：2013-09-26

Applicant: STMicroelectronics S.r.I.

Inventor： Alessandro Morcelli ,  Marco Veneri

IPC: G06F17/30

CPC classification number: G06F17/3074 ,  H04H60/80 ,  H04H60/92 ,  H04J3/0632 ,  H04L7/0008 ,  H04N21/4126 ,  H04N21/41407 ,  H04N21/4325 ,  H04N21/4367 ,  H04N21/8106 ,  H04N21/8358 ,  H04R2420/07

Abstract: A method for simultaneous playback of audio tracks from digital transceiver devices, which are adapted to define a communication network. The digital devices store audio tracks to be played. One of the digital devices is actuated as a Master device (M) and the remaining N digital devices as Slave devices. The master device generates a pilot signal by selecting a pilot audio track to be played from among stored audio tracks and by adding a synchronization frequency (fS) to the pilot audio track, having an assigned value that falls out of the sound wave frequency range. The Slave devices receive a pilot portion of the pilot signal and extract the synchronization frequency and the received part of the pilot audio track. The slave devices use the pilot to identify a stored track to be played using the synchronization frequency as a sampling frequency.

Abstract translation: 一种用于从数字收发器设备同时重放音轨的方法，其适于定义通信网络。 数字设备存储要播放的音轨。 其中一个数字设备被激活为主设备（M），其余的N个数字设备作为从设备启动。 主装置通过从存储的音轨中选择要播放的导频音轨并通过将具有落在声波频率范围之外的分配值的导频音轨添加同步频率（fS）来生成导频信号。 从设备接收导频信号的导频部分并提取同步频率和导频音轨的接收部分。 从设备使用飞行员使用同步频率来识别要播放的存储的轨道作为采样频率。