公开(公告)号：US20170099554A1

公开(公告)日：2017-04-06

申请号：US15316099

申请日：2015-06-02

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Guilin MA ,  Xiguang ZHENG ,  C. Phillip BROWN

IPC: H04R29/00 ,  H04R1/10

CPC classification number: H04R29/001 ,  H04R1/1091 ,  H04R3/04 ,  H04S7/301

Abstract: Example embodiments disclosed herein relate to modelling a frequency response characteristic of an electro-acoustic transducer. A method includes obtaining at least one measurement of the frequency response characteristic for at least one electro-acoustic transducer of the category. A model of a frequency response characteristic specific to a category of electro-acoustic transducers is generated at least in part based on perceptual importance of a frequency band, an averaged, normalized or microphone compensated measurement such that the distortion of the model is optimized. A further method for estimating a frequency response characteristic of an electro-acoustic transducer is based on the generated model and the sensitivity of the electro-acoustic transducer or headphone. Corresponding system and computer program product are also disclosed.

公开(公告)号：US20170098456A1

公开(公告)日：2017-04-06

申请号：US15311821

申请日：2015-05-22

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Guilin MA ,  Xiguang ZHENG ,  C. Phillip BROWN

IPC: G10L21/0364 ,  G10L21/034 ,  G10L21/0388 ,  G10L25/93

CPC classification number: G10L21/0364 ,  G10L21/0232 ,  G10L21/034 ,  G10L21/0388 ,  G10L25/93

Abstract: Embodiments of the present invention relate to signal processing. Methods for enhancing intelligibility of speech content in an audio signal are disclosed. One of the methods comprises obtaining reference loudness of the audio signal. The method further comprises enhancing the intelligibility of the speech content by adjusting partial loudness of the audio signal based on the reference loudness and a degree of the intelligibility. Corresponding systems and computer program products are also disclosed.

公开(公告)号：US20180048768A1

公开(公告)日：2018-02-15

申请号：US15549581

申请日：2016-02-08

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Gary SPITTLE ,  Glenn DICKINS ,  David GUNAWAN ,  Guilin MA

IPC: H04M3/56 ,  H04M3/00 ,  H04M3/34

CPC classification number: H04M3/568 ,  H04M3/002 ,  H04M3/34 ,  H04M3/569 ,  H04M9/082 ,  H04M2203/509 ,  H04R1/1083 ,  H04R27/00 ,  H04S7/302 ,  H04S7/303

Abstract: In an audio conferencing environment, including multiple users participating by means of a series of associated audio input devices for the provision of audio input, and a series of audio output devices for the output of audio output streams to the multiple users, with the audio input and output devices being interconnected to a mixing control server for the control and mixing of the audio inputs from each audio input devices to present a series of audio streams to the audio output devices, a method of reducing the effects of cross talk pickup of at least a first audio conversation by multiple audio input devices, the method including the steps of: (a) monitoring the series of audio input devices for the presence of a duplicate audio conversation input from at least two input audio sources in an audio output stream; and (b) where a duplicate audio conversation input is detected, suppressing the presence of the duplicate audio conversation input in the audio output stream.

公开(公告)号：US20170213540A1

公开(公告)日：2017-07-27

申请号：US15515552

申请日：2015-09-30

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Guilin MA ,  Xiguang ZHENG

IPC: G10K11/178 ,  H03G3/32 ,  H03G5/16 ,  H04R1/10

CPC classification number: G10K11/178 ,  G10K11/17827 ,  G10K11/17861 ,  G10K11/17873 ,  G10K2210/1081 ,  G10K2210/30232 ,  G10K2210/3025 ,  G10K2210/3055 ,  G10K2210/3224 ,  H03G3/32 ,  H03G5/165 ,  H04R1/1083

Abstract: The disclosure relates to combined active noise cancellation and noise compensation in a headphone. An audio processing device includes a selector and a noise compensation unit. The selector can select one of a plurality of first transfer functions based on at least one feature of at least one of an external noise and a content audio signal representing a sound to be reproduced through the headphone. The noise compensation unit can compute a second audio signal by applying the selected first transfer function to a first audio signal, and derive gains for the noise compensation at least based on the second audio signal. The at least one feature can be used to distinguish at least two of the first transfer functions. Each of the first transfer functions can transform the first audio signal to the second audio signal which is assumed as representing a version of the sound represented by the first audio signal, which arrives at an eardrum of a listener wearing the headphone. The first audio signal is one of a noise signal representing the external noise and the content audio signal.