公开(公告)号：WO2017015759A1

公开(公告)日：2017-02-02

申请号：PCT/CA2016/050884

申请日：2016-07-28

Applicant: AMP ME INC.

Inventor： ARCHAMBAULT, Martin-Luc ,  PAQUET, André-Philippe ,  PRESSEAULT, Nicolas ,  DAMASCENO, Marcos Paulo ,  SIMARD, Julien Gobeil ,  BERNARD, Luc ,  GAGNON, Martin ,  MATTE, Steve ,  LEVESQUE, Daniel

IPC: G10L21/055 ,  G06F17/00 ,  G10L19/018 ,  G10L19/02 ,  H04L12/16

CPC classification number: H04L67/1095 ,  G06F3/165 ,  G10L21/055 ,  G10L25/03 ,  G10L25/51 ,  H04L65/1083 ,  H04L65/4084 ,  H04L65/60 ,  H04L65/608 ,  H04L65/80 ,  H04R27/00 ,  H04R29/001 ,  H04R29/002 ,  H04R2227/003

Abstract: Playback of an audio stream is synchronized on multiple connected digital devices by using synchronization fingerprints. Playback actions may furthermore be synchronized on all devices, such as skips and pauses. Furthermore, synchronization may be maintained even in the presence of variations in decoding speed, playback interruptions, and network disconnections. Synchronized playback of streamed audio content on multiple devices is achieved by devices compensating for time drifting induced by network instability and variable playback speed across master and guest devices to reduce the formation of echoes during playback.

Abstract translation: 通过使用同步指纹，音频流的播放在多个连接的数字设备上同步。 可以在所有设备上同步播放动作，例如跳过和暂停。 此外，即使存在解码速度，播放中断和网络断开的变化，也可以保持同步。 在多个设备上流传输的音频内容的同步播放是通过补偿由主机和来宾设备引起的网络不稳定性和可变播放速度引起的时间漂移​​的设备来实现的，以减少回放期间回波的形成。

公开(公告)号：WO2017143440A1

公开(公告)日：2017-08-31

申请号：PCT/CA2017/050226

申请日：2017-02-23

Applicant: AMP ME INC.

Inventor： ARCHAMBAULT, Martin-Luc ,  PAQUET, André-Philippe ,  GAGNON, Martin ,  LEVESQUE, Daniel ,  BEAUDOIN, Keith ,  BERNARD, Luc ,  MERCIER, Marc ,  MIMEAULT, Michaël ,  KURET, Rami ,  SIMARD, Julien Gobeil

IPC: H04L7/00 ,  H04W56/00 ,  G10L19/018

CPC classification number: H04L65/601 ,  H04L43/106 ,  H04L65/4076

Abstract: A guest digital device joins a playback session hosted by a host digital device and synchronizes playback of digital media content with playback on the host digital device. This enables multiple users to listen to or view media at the same time on their respective devices. A time-based synchronization process may be used to initially synchronize playback of the guest digital device to the host digital device. If synchronization is lost, the device may record and analyze audio during playback and a fingerprint-based synchronization approach may be applied that detects a time offset between fingerprints in the analyzed audio. If synchronization is still not achieved, a watermark-based synchronization approach may be applied in which watermarks are actively injected into the audio and the time offsets between the watermarks is detected.

Abstract translation: 访客数字设备加入由主机数字设备托管的回放会话并且同步数字媒体内容的回放与主机数字设备上的回放。 这使得多个用户能够在他们各自的设备上同时收听或查看媒体。 基于时间的同步过程可以用于初始同步宾主数字设备到主数字设备的回放。 如果同步丢失，则设备可以在回放期间记录和分析音频，并且可以应用基于指纹的同步方法来检测分析的音频中的指纹之间的时间偏移。 如果仍未实现同步，则可以应用基于水印的同步方法，其中水印被主动注入到音频中并且检测到水印之间的时间偏移。