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公开(公告)号：US20200294516A1
公开(公告)日：2020-09-17
申请号：US16827541
申请日：2020-03-23
发明人： Per EKSTRAND , Lars VILLEMOES
IPC分类号： G10L19/022 , G10L19/24 , G10L21/038 , G10L21/04 , G10L19/02
摘要： The present invention relates to transposing signals in time and/or frequency and in particular to coding of audio signals. More particular, the present invention relates to high frequency reconstruction (HFR) methods including a frequency domain harmonic transposer. A method and system for generating a transposed output signal from an input signal using a transposition factor T is described. The system comprises an analysis window of length La, extracting a frame of the input signal, and an analysis transformation unit of order M transforming the samples into M complex coefficients. M is a function of the transposition factor T. The system further comprises a nonlinear processing unit altering the phase of the complex coefficients by using the transposition factor T, a synthesis transformation unit of order M transforming the altered coefficients into M altered samples, and a synthesis window of length Ls, generating a frame of the output signal.
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12.发明授权公开(公告)号：US10725726B2
公开(公告)日：2020-07-28
申请号：US14135855
申请日：2013-12-20
申请人： Strubwerks, LLC
发明人： Tyner Brentz Strub
IPC分类号： G10L21/04 , G06F3/16 , H04S5/00 , G06F3/033 , H04S1/00 , H04S3/00 , G10L19/008 , G11B20/10 , H04R5/027
摘要： Various embodiments may include systems and non-transitory computer-readable media for assigning three-dimensional spatial data to sounds and audio files. In one embodiment, a method can include receiving at least one audio signal, receiving sonic spatial data via a foot pedal, associating the sonic spatial data with the at least one audio signal, associating the at least one audio signal and sonic spatial data with a time code generated by a video camera, storing the sonic spatial data, the at least one audio signal, and time code in an encoded sound file, and directing playback of the encoded sound file.
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公开(公告)号：US10607620B2
公开(公告)日：2020-03-31
申请号：US16417195
申请日：2019-05-20
IPC分类号： G10L21/00 , G10L19/00 , G10L21/04 , G10L19/12 , G10L19/06 , G10L19/08 , G10L21/038 , G10L19/24 , G10L19/02
摘要： A decoder for processing an audio signal receives an audio bitstream, decodes the bitstream to obtain a set of spectral frequency parameters that are arranged in an order of frequencies, determines a minimum spectral frequency parameter difference from a plurality of calculated spectral frequency parameter differences, determines a start frequency bin for predicting a high band excitation signal according to the minimum spectral frequency parameter difference, generates the high band excitation signal by selecting a frequency band with a preset bandwidth selected from a low band excitation signal according to the start frequency bin, and synthesizes a wideband signal based on the generated high band excitation signal.
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公开(公告)号：US20190206421A1
公开(公告)日：2019-07-04
申请号：US16298788
申请日：2019-03-11
申请人： Bose Corporation
发明人： Michael Elliot , Debasmit Banerjee
CPC分类号： G10L21/04 , G10L19/26 , H04N21/4307 , H04N21/8106 , H04R29/007 , H04R2227/003 , H04R2227/005 , H04R2420/07
摘要： A method of synchronizing playback of audio data sent over a first wireless network from an audio source to a wireless speaker package that is adapted to play the audio data. The method includes comparing a first time period over which audio data was sent over the first wireless network to a second time period over which the audio data was received by the wireless speaker package, and playing the received audio data on the wireless speaker package over a third time period that is related to the comparison of the first and second time periods.
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公开(公告)号：US10332534B2
公开(公告)日：2019-06-25
申请号：US14990658
申请日：2016-01-07
发明人： Sriram Srinivasan , Ming-Chieh Lee
IPC分类号： G10L19/00 , G10L21/00 , G10L21/04 , G10L19/16 , H04L29/06 , G10L19/002 , G10L19/22 , G10L19/24 , H04L12/26 , G06F9/50
摘要： An audio stream is encoded for transmission to a receiving device via a communications channel. The to-be transmitted audio stream is received at an audio encoder executed on a processor. The processor has an amount of available processing resources. An available bandwidth of the communications channel is determined. Based on the determined bandwidth, a portion of the available processing resources is allocated to the audio encoder. The allocated portion is greater if the determined bandwidth is below a bandwidth threshold. The audio encoder encodes the audio stream using the allocated portion of processing resources, and transmits the encoded audio stream to the receiving device via the communications channel.
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公开(公告)号：US10061554B2
公开(公告)日：2018-08-28
申请号：US14643632
申请日：2015-03-10
IPC分类号： G06F17/00 , G06F3/16 , G10L15/28 , G10L21/04 , G10L19/022
CPC分类号： G06F3/165 , G06F3/162 , G10L15/28 , G10L19/022 , G10L21/04
摘要： A system and method of adjusting digital audio sampling used with wideband audio includes: performing audio sampling on an analog audio signal at an initial sampling rate and an initial bit rate over a wideband audio frequency range; generating a digital audio signal based on the audio sampling; detecting a qualitative error rate between the analog audio signal and the digital audio signal; and decreasing the initial sampling rate, the initial bit rate, or both for sampling subsequent analog audio when the qualitative error is below a threshold.
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公开(公告)号：US10026417B2
公开(公告)日：2018-07-17
申请号：US15136278
申请日：2016-04-22
申请人： OpenTV, Inc.
发明人： Kai Sun
IPC分类号： G10L21/04 , G10L21/043 , G10L25/57 , G10L25/78 , G10L15/25 , H04N21/2387 , H04N21/472 , H04N21/233 , H04N21/439
CPC分类号： G10L21/043 , G10L15/25 , G10L25/57 , G10L25/78 , H04N21/233 , H04N21/23418 , H04N21/234381 , H04N21/2387 , H04N21/439 , H04N21/44008 , H04N21/440281 , H04N21/47217 , H04N21/8456
摘要： Example embodiments provide systems and methods for accelerating digital content playback based on speech. A content acceleration system electronically accesses digital content. The system analyzes the digital content to detect at least one audio portion within the digital content, each of the at least one audio portion comprising speech. The system creates at least one digital content segment from the digital content based on the at least one audio portion, whereby a beginning of each digital content segment of the at least one digital content segment coincides with a beginning of a corresponding audio portion of the at least one audio portion. The system then accelerates playback of the digital content by fast forwarding through parts of the at least one digital content segment where speech is absent.
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公开(公告)号：US20180151191A1
公开(公告)日：2018-05-31
申请号：US15880869
申请日：2018-01-26
申请人： Bose Corporation
发明人： Michael Elliot , Debasmit Banerjee
CPC分类号： G10L21/04 , G10L19/26 , H04N21/4307 , H04N21/8106 , H04R29/007 , H04R2227/003 , H04R2227/005 , H04R2420/07
摘要： A method of synchronizing playback of audio data sent over a first wireless network from an audio source to a wireless speaker package that is adapted to play the audio data. The method includes comparing a first time period over which audio data was sent over the first wireless network to a second time period over which the audio data was received by the wireless speaker package, and playing the received audio data on the wireless speaker package over a third time period that is related to the comparison of the first and second time periods.
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公开(公告)号：US09911433B2
公开(公告)日：2018-03-06
申请号：US14848212
申请日：2015-09-08
申请人： Bose Corporation
发明人： Michael Elliot , Debasmit Banerjee
CPC分类号： G10L21/04 , G10L19/26 , H04N21/4307 , H04N21/8106 , H04R29/007 , H04R2227/003 , H04R2227/005 , H04R2420/07
摘要： A method of synchronizing playback of audio data sent over a first wireless network from an audio source to a wireless speaker package that is adapted to play the audio data. The method includes comparing a first time period over which audio data was sent over the first wireless network to a second time period over which the audio data was received by the wireless speaker package, and playing the received audio data on the wireless speaker package over a third time period that is related to the comparison of the first and second time periods.
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公开(公告)号：US09755770B2
公开(公告)日：2017-09-05
申请号：US14092874
申请日：2013-11-27
申请人： Roland Storti
发明人： Roland Storti
IPC分类号： G10L19/00 , G10L19/12 , G10L21/00 , G10L21/02 , G10L21/04 , G10L25/00 , H04H20/31 , H04H20/93 , H04H60/37 , H04H60/58
摘要： Disclosed are a method, a device and a system of generation of a modified digital media file based on encoding of a digital media file with decodable data such that the decodable data is indistinguishable through a human ear from a primary audio stream. In one embodiment, a method includes validating a user as a publisher, associating a response action to a message of the user, using a processor and a memory, generating a unique identifier through a hash function applied to the response action, encoding a digital media file with a decodable data using the unique identifier such that the decodable data is indistinguishable from a primary audio stream through a human ear, and generating a modified digital media file based on the encoding of the message with the decodable data such that the decodable data is indistinguishable from a primary audio stream through the human ear.
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