公开(公告)号：US20180366138A1

公开(公告)日：2018-12-20

申请号：US15625966

申请日：2017-06-16

Applicant: Apple Inc.

Inventor： Sean A. Ramprashad

IPC: G10L25/30 ,  G10L21/0232 ,  G10L25/15 ,  G10L15/20

CPC classification number: G10L25/30 ,  G10L15/20 ,  G10L19/00 ,  G10L21/003 ,  G10L21/0208 ,  G10L21/0232 ,  G10L25/15

Abstract: Several embodiments of a digital speech signal enhancer are described that use an artificial neural network that produces clean speech coding parameters based on noisy speech coding parameters as its input features. A vocoder parameter generator produces the noisy speech coding parameters from a noisy speech signal. A vocoder model generator processes the clean speech coding parameters into estimated clean speech spectral magnitudes. In one embodiment, a magnitude modifier modifies an original frequency spectrum of the noisy speech signal using the estimated clean speech spectral magnitudes, to produce an enhanced frequency spectrum, and a synthesis block converts the enhanced frequency spectrum into time domain, as an output speech sequence. Other embodiments are also described.

公开(公告)号：US20180352331A1

公开(公告)日：2018-12-06

申请号：US15613049

申请日：2017-06-02

Applicant: Apple Inc.

Inventor： Adam E. Kriegel ,  Afrooz Family ,  Sean A. Ramprashad ,  Sylvain J. Choisel

IPC: H04R3/04 ,  G10L21/0208 ,  H04R3/12 ,  H04R1/40 ,  H04R29/00

CPC classification number: H04R3/04 ,  G10L21/0208 ,  G10L2021/02082 ,  H04R1/403 ,  H04R3/12 ,  H04R27/00 ,  H04R29/002 ,  H04R29/007 ,  H04R2227/005 ,  H04S7/305 ,  H04S7/307

Abstract: An audio system includes one or more loudspeaker cabinets, each having loudspeakers. Sensing logic determines an acoustic environment of the loudspeaker cabinets. The sensing logic may include an echo canceller. A low frequency filter corrects an audio program based on the acoustic environment of the loudspeaker cabinets. The system outputs an omnidirectional sound pattern, which may be low frequency sound, to determine the acoustic environment. The system may produce a directional pattern superimposed on an omnidirectional pattern, if the acoustic environment is in free space. The system may aim ambient content toward a wall and direct content away from the wall, if the acoustic environment is not in free space. The sensing logic automatically determines the acoustic environment upon initial power up and when position changes of loudspeaker cabinets are detected. Accelerometers may detect position changes of the loudspeaker cabinets.

公开(公告)号：US20160358619A1

公开(公告)日：2016-12-08

申请号：US14732715

申请日：2015-06-06

Applicant: Apple Inc.

Inventor： Sean A. Ramprashad ,  Harvey D. Thornburg ,  Arvindh Krishnaswamy ,  Aram M. Lindahl

IPC: G10L21/0308 ,  G10L15/34 ,  G10L15/16

CPC classification number: G10L15/34 ,  G10L15/16 ,  G10L15/20 ,  G10L2015/022 ,  G10L2021/02166

Abstract: A speech recognition system for resolving impaired utterances can have a speech recognition engine configured to receive a plurality of representations of an utterance and concurrently to determine a plurality of highest-likelihood transcription candidates corresponding to each respective representation of the utterance. The recognition system can also have a selector configured to determine a most-likely accurate transcription from among the transcription candidates. As but one example, the plurality of representations of the utterance can be acquired by a microphone array, and beamforming techniques can generate independent streams of the utterance across various look directions using output from the microphone array.

Abstract translation: 用于解决受损话语的语音识别系统可以具有语音识别引擎，其被配置为接收话语的多个表示，并且同时确定与发音的每个相应表示相对应的多个最高似然转录候选。 识别系统还可以具有选择器，其被配置为确定转录候选物中最可能的精确转录。 作为一个示例，可以通过麦克风阵列来获取话音的多个表示，并且波束成形技术可以使用来自麦克风阵列的输出在各种外观方向上产生独立的话音流。

公开(公告)号：US09301073B2

公开(公告)日：2016-03-29

申请号：US13790380

申请日：2013-03-08

Applicant: Apple Inc.

Inventor： Arvindh Krishnaswamy ,  David T. Yeh ,  Juha O. Merimaa ,  Sean A. Ramprashad

IPC: H04R29/00

CPC classification number: H04R29/005 ,  H04R3/00 ,  H04R29/004 ,  H04R2499/11

Abstract: Systems and methods for determining the operating condition of multiple microphones of an electronic device are disclosed. A system can include a plurality of microphones operative to receive signals, a microphone condition detector, and a plurality of microphone condition determination sources. The microphone condition detector can determine a condition for each of the plurality of microphones by using the received signals and accessing at least one microphone condition determination source.

公开(公告)号：US20130329896A1

公开(公告)日：2013-12-12

申请号：US13790380

申请日：2013-03-08

Applicant: APPLE INC.

Inventor： Arvindh Krishnaswamy ,  David T. Yeh ,  Juha O. Merimaa ,  Sean A. Ramprashad

IPC: H04R29/00

CPC classification number: H04R29/005 ,  H04R3/00 ,  H04R29/004 ,  H04R2499/11

Abstract: Systems and methods for determining the operating condition of multiple microphones of an electronic device are disclosed. A system can include a plurality of microphones operative to receive signals, a microphone condition detector, and a plurality of microphone condition determination sources. The microphone condition detector can determine a condition for each of the plurality of microphones by using the received signals and accessing at least one microphone condition determination source.

Abstract translation: 公开了用于确定电子设备的多个麦克风的操作条件的系统和方法。 系统可以包括可操作以接收信号的多个麦克风，麦克风条件检测器和多个麦克风条件确定源。 麦克风条件检测器可以通过使用接收到的信号并访问至少一个麦克风条件确定源来确定多个麦克风中的每一个的条件。