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公开(公告)号：US09275644B2
公开(公告)日：2016-03-01
申请号：US13743797
申请日：2013-01-17
Applicant: Qualcomm Incorporated
Inventor： Vivek Rajendran , Venkatesh Krishnan
CPC classification number: G10L19/00 , G10L19/005 , G10L19/09 , G10L19/10 , G10L19/12 , G10L19/22 , G10L25/21
Abstract: A method for redundant frame coding by an electronic device is described. The method includes determining an adaptive codebook energy and a fixed codebook energy based on a frame. The method also includes coding a redundant version of the frame based on the adaptive codebook energy and the fixed codebook energy. The method further includes sending a subsequent frame.
Abstract translation: 描述用于电子设备的冗余帧编码的方法。 该方法包括基于帧确定自适应码本能量和固定码本能量。 该方法还包括基于自适应码本能量和固定码本能量对帧的冗余版本进行编码。 该方法还包括发送后续帧。
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12.发明授权公开(公告)号：US09208775B2
公开(公告)日：2015-12-08
申请号：US14015996
申请日：2013-08-30
Applicant: QUALCOMM Incorporated
Inventor： Subasingha Shaminda Subasingha , Venkatesh Krishnan , Vivek Rajendran , Stephane Pierre Villette
IPC: G10L19/10 , G10L13/02 , G10L25/90 , G10L19/005
CPC classification number: G10L13/02 , G10L19/005 , G10L19/10 , G10L25/90
Abstract: A method for determining pitch pulse period signal boundaries by an electronic device is described. The method includes obtaining a signal. The method also includes determining a first averaged curve based on the signal. The method further includes determining at least one first averaged curve peak position based on the first averaged curve and a threshold. The method additionally includes determining pitch pulse period signal boundaries based on the at least one first averaged curve peak position. The method also includes synthesizing a speech signal.
Abstract translation: 描述了一种通过电子设备确定音调脉冲周期信号边界的方法。 该方法包括获得信号。 该方法还包括基于该信号来确定第一平均曲线。 该方法还包括基于第一平均曲线和阈值确定至少一个第一平均曲线峰值位置。 该方法还包括基于至少一个第一平均曲线峰值位置来确定音调脉冲周期信号边界。 该方法还包括合成语音信号。
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公开(公告)号：US20150106107A1
公开(公告)日：2015-04-16
申请号：US14512892
申请日：2014-10-13
Applicant: QUALCOMM Incorporated
Inventor： Venkatraman S. Atti , Venkatesh Krishnan , Stephane Pierre Villette , Vivek Rajendran
IPC: G10L19/035
CPC classification number: G10L19/035 , G10L19/0204 , G10L19/08 , G10L19/083 , G10L21/038
Abstract: A method includes determining a first modeled high-band signal based on a low-band excitation signal of an audio signal, where the audio signal includes a high-band portion and a low-band portion. The method also includes determining scaling factors based on energy of sub-frames of the first modeled high-band signal and energy of corresponding sub-frames of the high-band portion of the audio signal. The method includes applying the scaling factors to a modeled high-band excitation signal to determine a scaled high-band excitation signal and determining a second modeled high-band signal based on the scaled high-band excitation signal. The method includes determining gain parameters based on the second modeled high-band signal and the high-band portion of the audio signal.
Abstract translation: 一种方法包括基于音频信号的低频带激励信号来确定第一建模的高频带信号，其中音频信号包括高频带部分和低频带部分。 该方法还包括基于第一建模高频带信号的子帧的能量和音频信号的高频带部分的对应子帧的能量来确定缩放因子。 该方法包括将缩放因子应用于建模的高频带激励信号以确定缩放的高频带激励信号，并且基于经缩放的高频带激励信号确定第二建模的高频带信号。 该方法包括基于第二建模的高频带信号和音频信号的高频带部分确定增益参数。
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公开(公告)号：US10777213B2
公开(公告)日：2020-09-15
申请号：US16054931
申请日：2018-08-03
Applicant: QUALCOMM Incorporated
IPC: G10L19/26 , G10L21/0316
Abstract: A device includes a receiver configured to receive an audio frame of an audio stream. The audio frame includes information that indicates a coded bandwidth of the audio frame. The device also includes a decoder configured to generate first decoded speech associated with the audio frame and to determine an output mode of the decoder based at least in part on the information that indicates the coded bandwidth. A bandwidth mode indicated by the output mode of the decoder is different than a bandwidth mode indicated by the information that indicates the coded bandwidth. The decoder is further configured to output second decoded speech based on the first decoded speech. The second decoded speech is generated according to an output mode of the decoder.
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公开(公告)号：US10186276B2
公开(公告)日：2019-01-22
申请号：US14865885
申请日：2015-09-25
Applicant: QUALCOMM Incorporated
Abstract: Techniques are described for performing adaptive noise suppression to improve handling of both speech signals and music signals at least up to super wideband (SWB) bandwidths. The techniques include identifying a context or environment in which audio data is captured, and adaptively changing a level of noise suppression applied to the audio data prior to bandwidth compressing (e.g., encoding) based on the context. For a valid speech context, an audio pre-processor may set a first level of noise suppression that is relatively aggressive in order to suppress noise (including music) in the speech signals. For a valid music context, the audio pre-processor may set a second level of noise suppression that is less aggressive in order to leave the music signals undistorted. In this way, a vocoder at a transmitter side wireless communication device may properly encode both speech and music signals with minimal distortions.
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Patent Agency Ranking
公开(公告)号：US09948578B2
公开(公告)日：2018-04-17
申请号：US14829560
申请日：2015-08-18
Applicant: QUALCOMM Incorporated
Inventor： Subasingha Shaminda Subasingha , Vivek Rajendran , Duminda Dewasurendra , Chandra Mouli Polisetty , Venkatraman S. Atti , Venkata Subrahmanyam Chandra Sekhar Chebiyyam
CPC classification number: H04L49/90 , G10L19/167 , H04J3/0632 , H04J3/0664 , H04L7/0016 , H04L12/56 , H04L43/106 , H04L65/608
Abstract: A device includes a de-jitter buffer configured to receive a packet, the packet including first data and second data. The first data includes a partial copy of first frame data corresponding to a first frame of a sequence of frames. The second data corresponds to a second frame of the sequence of frames. The device also includes an analyzer configured to, in response to receiving the packet, generate a first frame receive timestamp associated with the first data. The analyzer is also configured to, in response to receiving the packet, generate a second frame receive timestamp associated with the second data. The first frame receive timestamp indicates a first time that is earlier than a second time indicated by the second frame receive timestamp.
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公开(公告)号：US09728200B2
公开(公告)日：2017-08-08
申请号：US14026765
申请日：2013-09-13
Applicant: QUALCOMM Incorporated
Inventor： Venkatraman S. Atti , Vivek Rajendran , Venkatesh Krishnan
IPC: G10L19/26
CPC classification number: G10L19/265 , G10L19/06 , G10L19/09 , G10L19/26 , G10L21/0216 , G10L2019/0011 , G10L2021/02168
Abstract: A method of processing an audio signal includes determining an average signal-to-noise ratio for the audio signal over time. The method includes, based on the determined average signal-to-noise ratio, a formant-sharpening factor is determined. The method also includes applying a filter that is based on the determined formant-sharpening factor to a codebook vector that is based on information from the audio signal.
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18.发明申请公开(公告)号：US20170125028A1
公开(公告)日：2017-05-04
申请号：US15263905
申请日：2016-09-13
Applicant: QUALCOMM Incorporated
IPC: G10L19/16 , G10L19/005
CPC classification number: G10L19/167 , G10L19/005 , G10L19/018 , H04L1/0014 , H04L1/0045 , H04L1/0057 , H04L1/007 , H04L1/0076 , H04L1/0083 , H04L1/08 , H04L12/66 , H04L65/103 , H04L65/605 , H04L65/607 , H04N21/2389
Abstract: An apparatus includes a network interface configured to receive, via a circuit-switched network, a packet. The packet includes a primary coding of a first audio frame, redundant coding of a second audio frame, and one or more bits that indicate signaling information. The signaling information corresponds to a decode operation of at least one of the primary coding or the redundant coding. The apparatus further includes a decoder configured to decode a portion of the packet based on the signaling information.
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公开(公告)号：US20170092288A1
公开(公告)日：2017-03-30
申请号：US14865885
申请日：2015-09-25
Applicant: QUALCOMM Incorporated
IPC: G10L21/0208 , G10L19/20 , H04R1/08 , G10L19/26 , G10L25/81
CPC classification number: G10L21/0208 , G10L19/20 , G10L19/265 , G10L25/81 , G10L25/84 , G10L2021/02087 , H04R1/08 , H04R2430/20
Abstract: Techniques are described for performing adaptive noise suppression to improve handling of both speech signals and music signals at least up to super wideband (SWB) bandwidths. The techniques include identifying a context or environment in which audio data is captured, and adaptively changing a level of noise suppression applied to the audio data prior to bandwidth compressing (e.g., encoding) based on the context. For a valid speech context, an audio pre-processor may set a first level of noise suppression that is relatively aggressive in order to suppress noise (including music) in the speech signals. For a valid music context, the audio pre-processor may set a second level of noise suppression that is less aggressive in order to leave the music signals undistorted. In this way, a vocoder at a transmitter side wireless communication device may properly encode both speech and music signals with minimal distortions.
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公开(公告)号：US20160293174A1
公开(公告)日：2016-10-06
申请号：US15083717
申请日：2016-03-29
Applicant: QUALCOMM Incorporated
CPC classification number: G10L19/26 , G10L21/0316
Abstract: A device includes a receiver configured to receive an audio frame of an audio stream. The device also includes a decoder configured to generate first decoded speech associated with the audio frame and to determine a count of audio frames classified as being associated with band limited content. The decoder is further configured to output second decoded speech based on the first decoded speech. The second decoded speech may be generated according to an output mode of the decoder. The output mode may be selected based at least in part on the count of audio frames.
Abstract translation: 一种设备包括被配置为接收音频流的音频帧的接收机。 该设备还包括被配置为产生与音频帧相关联的第一解码语音并且确定分类为与频带限制内容相关联的音频帧的计数的解码器。 解码器还被配置为基于第一解码语音输出第二解码语音。 第二解码语音可以根据解码器的输出模式生成。 可以至少部分地基于音频帧的计数来选择输出模式。
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