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公开(公告)号：US20230216461A1
公开(公告)日：2023-07-06
申请号：US18074169
申请日：2022-12-02
申请人： GRACENOTE, INC.
CPC分类号： H03G3/3005 , H03F3/183 , H04R3/00 , H03G7/002 , H03G3/02 , H03G3/3089 , H03F2200/03
摘要： Apparatus, systems, articles of manufacture, and methods for volume adjustment are disclosed herein. An example method includes collecting data corresponding to a volume of an audio signal as the audio signal is output through a device, when an average volume of the audio signal does not satisfy a volume threshold for a specified timespan, determining a difference between the average volume and a desired volume, and applying a gain to the audio signal to adjust the volume of the audio signal to the desired volume, the gain determined based on the difference between the average volume and the desired volume.
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公开(公告)号：US11625218B2
公开(公告)日：2023-04-11
申请号：US17223196
申请日：2021-04-06
申请人： Tomoyuki Goto
发明人： Tomoyuki Goto
摘要： A sound output device includes: first circuitry, connected to a first audio device, that outputs sound based on sound output data via the first audio device according to first sound volume data; and second circuitry connected to a second audio device, including an amplifier that amplifies sound to be output from the second audio device according to second sound volume data. The second circuitry controls a value of the second sound volume data to be a fixed value, receives, from the first circuitry, the sound output data and the first sound volume data, and outputs sound based on the sound output data that is received, via the second audio device, according to the first sound volume data that is received.
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公开(公告)号：US20230054499A1
公开(公告)日：2023-02-23
申请号：US17646286
申请日：2021-12-28
发明人： Chun Hao Lai , Tsung-Peng Chuang
摘要： An audio processing device includes a signal processing circuit, a power switch circuit, a power amplifier and a detection circuit. The signal processing circuit is configured to process an audio input to generate an audio signal. The power switch circuit is configured to generate an operating voltage. The power amplifier is coupled with the signal processing circuit and the power switch circuit, and configured to drive a load circuit by the operating voltage according to the audio signal. The detection circuit is coupled with the signal processing circuit and the power switch circuit, configured to obtain a volume value from the audio signal and compare the volume value with a first volume threshold to generate a comparison result, and configured to control, according to the comparison result, the power switch circuit to set the operating voltage to have a corresponding one of multiple voltage levels.
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公开(公告)号：US11581865B2
公开(公告)日：2023-02-14
申请号：US17323551
申请日：2021-05-18
发明人： Miles Klett Roberto
摘要： An audio system has an amplifier for driving an audio actuator and includes a switched-mode power supply that draws power from a power source (e.g., battery) to supply power to the amplifier, a capacitor charged by the switched-mode power supply to supply power to the amplifier, and a feed-forward compressor that performs dynamic range compression of an audio input to provide an audio output for amplification by the amplifier. The compressor includes a sidechain frequency-biasing filter that generates a frequency-biased version of the audio input that is attenuated as frequency increases which causes the compressor to decrease the compression as frequency increases. A control block limits current drawn from the battery by the switched-mode power supply independent of audio input frequency, but the frequency-biasing filter enables the amplifier to service audio power transients greater than the current-limited power supply can supply by advantageously concurrently sourcing extra power from the capacitor.
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公开(公告)号：US20220376668A1
公开(公告)日：2022-11-24
申请号：US17323551
申请日：2021-05-18
发明人： Miles Klett Roberto
摘要： An audio system has an amplifier for driving an audio actuator and includes a switched-mode power supply that draws power from a power source (e.g., battery) to supply power to the amplifier, a capacitor charged by the switched-mode power supply to supply power to the amplifier, and a feed-forward compressor that performs dynamic range compression of an audio input to provide an audio output for amplification by the amplifier. The compressor includes a sidechain frequency-biasing filter that generates a frequency-biased version of the audio input that is attenuated as frequency increases which causes the compressor to decrease the compression as frequency increases. A control block limits current drawn from the battery by the switched-mode power supply independent of audio input frequency, but the frequency-biasing filter enables the amplifier to service audio power transients greater than the current-limited power supply can supply by advantageously concurrently sourcing extra power from the capacitor.
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公开(公告)号：US20220302892A1
公开(公告)日：2022-09-22
申请号：US17806380
申请日：2022-06-10
发明人： Seongcheol JO , Taek Su AN , Sung Hyun KANG , JiUng LEE , Byung Gyou CHOI , Jeongsoo HUR , Hyung Oh OH , Taegyu LEE , Hyeonsu SEO
IPC分类号： H03G7/00 , G10L21/0364 , H04L1/00 , H04L65/756
摘要： A method for normalizing platform-adaptive audio includes encoding input video content and generating video stream data as original data to store the video stream data in storage; generating loudness metadata for audio data of the video content and storing the loudness metadata in the storage; receiving a request for the video content from a client; searching the storage for video stream data of the video content corresponding to the request, the loudness metadata, and a device profile corresponding to device information included in the request; and transmitting, to the client, a response including the video stream data, the loudness metadata, and the device profile that are found in the storage.
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公开(公告)号：US20220277756A1
公开(公告)日：2022-09-01
申请号：US17664381
申请日：2022-05-20
发明人： Fabian KUECH , Christian UHLE , Michael KRATSCHMER , Bernhard NEUGEBAUER , Michael MEIER , Stephan SCHREINER
IPC分类号： G10L19/16 , H03G7/00 , G10L19/022
摘要： An audio encoder device includes an audio encoder configured for producing an encoded audio bitstream from an audio signal having consecutive audio frames; a dynamic range control encoder configured for producing an encoded dynamic range control bitstream from an dynamic range control sequence corresponding to the audio signal and having consecutive dynamic range control frames, wherein each dynamic range control frame of the dynamic range control frames has one or more nodes, wherein each node of the one or more nodes has gain information for the audio signal and time information indicating to which point in time the gain information corresponds.
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公开(公告)号：US11425499B2
公开(公告)日：2022-08-23
申请号：US17102792
申请日：2020-11-24
发明人： Anthony Bongiovi , Glenn Zelniker , Phillip Fuller
摘要： The present invention provides methods and systems for digital processing of an input audio signal. Specifically, the present invention includes a high pass filter configured to filter the input audio signal to create a high pass signal. A first filter module then filters the high pass signal to create a first filtered signal. A first compressor modulates the first filtered signal to create a modulated signal. A second filter module then filters the modulated signal to create a second filtered signal. The second filtered signal is processed by a first processing module. A band splitter splits the processed signal into low band, mid band, and high band signals. The low band and high band signals are modulated by respective compressors. A second processing module further processes the modulated low band, mid band, and modulated high band signals to create an output signal.
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公开(公告)号：US11410699B1
公开(公告)日：2022-08-09
申请号：US17574063
申请日：2022-01-12
摘要： A phono-preamplifier for processing audio output signals from a turntable is powered by a variable voltage adapter such as a USB-C PD power supply adapter.
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公开(公告)号：US20220166397A1
公开(公告)日：2022-05-26
申请号：US17535329
申请日：2021-11-24
申请人： GAUDIO LAB, INC.
发明人： Hyunjoo CHUNG , Hyunoh OH , Sangbae CHON , Jeonghun SEO
摘要： A method for performing loudness normalization by an audio signal processing device includes: receiving an audio signal; receiving information relating to integrated loudness of the audio signal; receiving information relating to target loudness of the audio signal; obtaining a corrected integrated loudness by correcting the integrated loudness based on one or more audio processing; and obtaining a normalized audio signal by normalizing the audio signal based on the corrected integrated loudness and the target loudness.
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