公开(公告)号：US10389323B2

公开(公告)日：2019-08-20

申请号：US15845894

申请日：2017-12-18

Applicant: TLS Corp.

Inventor： Alessandro Travaglini

IPC: H03G3/32 ,  H03G3/30 ,  H03G5/16

Abstract: Context-aware loudness control of audio content may include choosing from a plurality of loudness level models based on an audio reproduction device, measuring loudness level of the audio content based on the chosen loudness model, processing the real-time loudness measurement of the input audio signal to output real-time loudness level adjustment, processing a momentary loudness measurement of the input audio signal to output a momentary loudness level adjustment, processing a short-term loudness measurement of the input audio signal to output a short-term loudness level adjustment, adjusting the input audio signal based on the real-time, momentary, and short-term loudness level adjustments to output a post-processing input signal, measuring long-term loudness of the post-processing input signal to output a long-term loudness measurement, processing the long-term loudness measurement to output a post-processing level adjustment, and processing the real-time, momentary, short-term, and post-processing level adjustments to output an overall loudness level adjustment.

公开(公告)号：US10152980B2

公开(公告)日：2018-12-11

申请号：US15854493

申请日：2017-12-26

Applicant: TLS Corp.

Inventor： Barry Blesser ,  Robert Dye

IPC: G06F17/00 ,  G10L19/018 ,  G10L19/02

Abstract: A method to watermark an audio signal may include receiving watermark data payload information, converting the watermark data payload information into a watermark audio signal including one or more watermark messages corresponding to the watermark data payload information, and inserting the one or more watermark messages into multiple spectral channels of the audio signal, wherein each of the multiple spectral channels occupies a different frequency range, wherein bandwidth of a first spectral channel located in a first frequency region is smaller than bandwidth of a second spectral channel located in a second frequency region, and wherein bandwidth of a spectral channel, from the multiple spectral channels, is equal to a number divided by the time duration of a respective symbol, from the multiple symbols, in the spectral channel, wherein the number is in the range of 0.7 to 2.5.

公开(公告)号：US09865272B2

公开(公告)日：2018-01-09

申请号：US15459721

申请日：2017-03-15

Applicant: TLS Corp.

Inventor： Barry Blesser ,  Robert Dye

IPC: G06F17/00 ,  G10L19/018 ,  G10L19/02

CPC classification number: G10L19/018 ,  G10L19/0204

Abstract: A method for a machine or group of machines to watermark an audio signal includes receiving an audio signal and a watermark signal including multiple symbols, and inserting at least some of the multiple symbols in multiple spectral channels of the audio signal, each spectral channel corresponding to a different frequency range. Optimization of the design incorporates minimizing the human auditory system perceiving the watermark channels by taking into account perceptual time-frequency masking, pattern detection of watermarking messages, the statistics of worst case program content such as speech, and speech-like programs.

公开(公告)号：US09820073B1

公开(公告)日：2017-11-14

申请号：US15591549

申请日：2017-05-10

Applicant: TLS Corp.

Inventor： Frank Foti

IPC: G06F17/00 ,  H04S5/00 ,  H03G3/30

CPC classification number: H04S5/005 ,  H03G3/3005 ,  H03G3/301 ,  H03G5/165 ,  H03G9/025 ,  H03G2201/106 ,  H04S2400/05 ,  H04S2400/07

Abstract: Extracting a common signal from multiple audio signals may include summing a first signal and a second signal to obtain a first+second signal; subtracting the second signal from the first signal to obtain a first−second signal; transforming the first+second signal and the first−second signal to frequency domain representations; calculating absolute value of the frequency domain representations of the first+second signal and the first−second signal; subtracting the absolute value of the frequency domain representation of the first−second signal from the absolute value of the frequency domain representation of the first+second signal to obtain a difference signal; multiplying the difference signal by the frequency domain representation of the first+second signal to obtain a product signal; dividing the product signal by the absolute value of the frequency domain representation of the first+second signal to obtain a frequency domain representation of the common signal; and transforming the frequency domain representation to the common signal.

公开(公告)号：US09626977B2

公开(公告)日：2017-04-18

申请号：US15133825

申请日：2016-04-20

Applicant: TLS Corp.

Inventor： Barry Blesser ,  Robert Dye

IPC: G06F17/00 ,  G10L19/018 ,  G10L19/02

CPC classification number: G10L19/018 ,  G10L19/0204

Abstract: A method for a machine or group of machines to watermark an audio signal includes receiving an audio signal and a watermark signal including multiple symbols, and inserting at least some of the multiple symbols in multiple spectral channels of the audio signal, each spectral channel corresponding to a different frequency range. Optimization of the design incorporates minimizing the human auditory system perceiving the watermark channels by taking into account perceptual time-frequency masking, pattern detection of watermarking messages, the statistics of worst case program content such as speech, and speech-like programs.

公开(公告)号：US09130685B1

公开(公告)日：2015-09-08

申请号：US14686716

申请日：2015-04-14

Applicant: TLS Corp.

Inventor： Barry Blesser

IPC: G10L19/00 ,  G06Q10/00 ,  H04H60/33 ,  H04H60/32 ,  H04N7/10 ,  H04H60/58 ,  G10L19/018 ,  H04H60/66 ,  H04H20/86

CPC classification number: H04H60/58 ,  G10L19/00 ,  G10L19/018 ,  H04H20/31 ,  H04H60/31 ,  H04H60/45 ,  H04H60/66 ,  H04H2201/50

Abstract: Optimizing parameters includes, during a time interval, rotating from setting a first parameter to a first value for a first time period, to setting the first parameter to a second value for a second time period such that the time interval includes multiple first time periods in which the first parameter is set to the first value sequenced with multiple second time periods in which the first parameter is set to the second value; obtaining, for the time interval, a first set of ratings corresponding to the first time periods and a second set of ratings corresponding to the second time periods; averaging, for the time interval, the first set of ratings to a first average rating and the second set of ratings to a second average rating; and correlating the first average rating to the first value and the second average rating to the second value.

Abstract translation: 优化参数包括在时间间隔内从第一时间段的第一参数设置旋转到第一时间段的第一值，以将第一参数设置为第二时间段的第二值，使得时间间隔包括多个第一时间段 将第一参数设置为第一值，其中第一参数被设置为第二值，其中多个第二时间段被排序; 在所述时间间隔中获得对应于所述第一时间段的第一组评级和对应于所述第二时间段的第二组评级; 将所述时间间隔平均为第一平均评级的第一组评级和第二平均评级的第二组评级; 以及将所述第一平均评级与所述第一值和所述第二平均评级相关联到所述第二值。