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1. 发明授权

US11222649B2 Mixing apparatus, mixing method, and non-transitory computer-readable recording medium 有权
公开(公告)号：US11222649B2
公开(公告)日：2022-01-11
申请号：US17047524
申请日：2019-04-11
申请人： The University of Electro-Communications , Hibino Corporation
发明人： Kota Takahashi , Tsukasa Miyamoto , Yoshiyuki Ono , Yoji Abe
IPC分类号： H04B1/00 , G10L21/0332 , H04R3/00 , H04S3/00 , H03F99/00 , G10L21/0364
摘要： A mixing apparatus having a stereo output includes: a first signal processor that mixes a first signal and a second signal in a first channel; a second signal processor that mixes a third signal and a fourth signal in a second channel; a third channel that processes a weighted sum of a signal of the first channel and a signal of the second channel; and a gain deriving part that generates a gain mask commonly used in the first channel and the second channel, wherein the gain deriving part determines a first gain commonly applied to the first signal and the third signal, and a second gain commonly applied to the second signal and the fourth signal, so that predetermined conditions for simultaneous gain generation are satisfied at least at the first channel and the second channel among the first channel, the second channel, and the third channel.

2. 发明授权

US10254822B2 Power decrease and increase based on packet type 有权
公开(公告)号：US10254822B2
公开(公告)日：2019-04-09
申请号：US15245569
申请日：2016-08-24
申请人： Sonos, Inc.
发明人： Steve F. Holmgren , John L. MacFarlane
IPC分类号： G06F17/00 , G06F1/3296 , H03F1/52 , H03F99/00 , H04R27/00 , G06F3/16 , H03F3/183 , H03G1/00 , H04L29/06 , G06F1/3209 , G06F1/3246
摘要： Techniques for controlling one or more audio amplifiers in or associated with a device coupled on a local area network are disclosed. An example playback device includes a processor, an amplifier, a network interface, and a memory. The memory includes a software module that, when executed by the processor, causes the playback device to: operate in a first power mode in which the amplifier consumes a first amount of power; while operating in the first power mode, determine that a defined time has passed since receiving, via the network interface, a specified type of data packet; and based on determining that the defined time has passed since receiving the specified type of data packet, transition from operating in the first power mode to operate in a second power mode in which the amplifier consumes a second amount of power, wherein the first amount of power is greater than the second amount of power.

3. 发明授权

US10228754B2 Power decrease based on packet type 有权
公开(公告)号：US10228754B2
公开(公告)日：2019-03-12
申请号：US15245501
申请日：2016-08-24
申请人： Sonos, Inc.
发明人： Steve F. Holmgren , John L. MacFarlane
IPC分类号： G06F17/00 , G06F1/3296 , H03F1/52 , H03F99/00 , H04R27/00 , G06F3/16 , H03F3/183 , H03G1/00 , H04L29/06 , G06F1/3209 , G06F1/3246
摘要： Techniques for controlling one or more audio amplifiers in or associated with a device coupled on a local area network are disclosed. An example playback device includes a processor, an amplifier, a network interface, and a memory. The memory includes a software module that, when executed by the processor, causes the playback device to: operate in a first power mode in which the amplifier consumes a first amount of power; while operating in the first power mode, determine that a defined time has passed since receiving, via the network interface, a specified type of data packet; and based on determining that the defined time has passed since receiving the specified type of data packet, transition from operating in the first power mode to operate in a second power mode in which the amplifier consumes a second amount of power, wherein the first amount of power is greater than the second amount of power.

4. 发明授权

US10126811B2 Power increase based on packet type 有权
公开(公告)号：US10126811B2
公开(公告)日：2018-11-13
申请号：US15245616
申请日：2016-08-24
申请人： Sonos, Inc.
发明人： Steve F. Holmgren , John L. MacFarlane
IPC分类号： G06F17/00 , G06F1/32 , H03F1/52 , H03F99/00 , H04R27/00 , G06F3/16 , H03F3/183 , H03G1/00 , H04L29/06
摘要： Techniques for controlling one or more audio amplifiers in or associated with a device coupled on a local area network are disclosed. An example playback device includes a processor, an amplifier, a network interface, and a memory. The memory includes a software module that, when executed by the processor, causes the playback device to: operate in a first power mode in which the amplifier consumes a first amount of power; while operating in the first power mode, determine that a defined time has passed since receiving, via the network interface, a specified type of data packet; and based on determining that the defined time has passed since receiving the specified type of data packet, transition from operating in the first power mode to operate in a second power mode in which the amplifier consumes a second amount of power, wherein the first amount of power is greater than the second amount of power.

5. 发明授权

US10076062B2 Audio amplifier 有权
公开(公告)号：US10076062B2
公开(公告)日：2018-09-11
申请号：US14291080
申请日：2014-05-30
申请人： Nicholas Heath Wright
发明人： Nicholas Heath Wright
IPC分类号： H03F99/00 , H05K7/20
CPC分类号： H05K7/20445 , H05K7/20409
摘要： A amplifier with improved space efficiency includes a housing that dissipates heat having an upper wall and two side walls and having an interior with upper and lower portions. The amplifier further includes an upper circuit board in the upper portion and a lower circuit board in a lower portion. The amplifier further includes a connector that electrically connects the upper and lower circuit boards.

6. 发明授权

US10008988B2 Amplifier 有权
公开(公告)号：US10008988B2
公开(公告)日：2018-06-26
申请号：US15673991
申请日：2017-08-10
申请人： Onkyo Corporation
发明人： Koji Takahama , Tsukasa Kato
IPC分类号： H04R29/00 , H04R3/00 , H03F99/00 , H03F1/30 , H03F1/52 , H03F3/181 , H03F3/217
CPC分类号： H03F1/30 , H03F1/52 , H03F3/181 , H03F3/217 , H03F2200/03 , H03F2200/321 , H03F2200/351 , H03F2200/447 , H03F2200/462
摘要： To prevent temperature rise of an amplifier. An AV amplifier 1 that amplifies an audio signal includes a PWM modulator 5 that controls dynamic range of the audio signal to not more than a setting value, and a microcomputer 2 sets the setting value based on consumption current. The microcomputer 2 sets the setting value to a predetermined value (−35 dB) in case that state that consumption current is not less than a predetermined threshold (4.9 A or 3.6 A) continues for a predetermined time (2 minutes or 7.5 minutes).

7. 发明授权

US09742357B2 Audio system having an improved efficiency and extended operation time 有权
公开(公告)号：US09742357B2
公开(公告)日：2017-08-22
申请号：US15465586
申请日：2017-03-21
申请人： Logitech Europe S.A
发明人： Alan Olson , Sean Chiu , Jianhua Pan , Constantine Mouzakis , Jeffrey Anderson , Patrick Nicolet
IPC分类号： H03F99/00 , H04R3/00 , H03F1/02 , H03F3/185 , H03F3/217
CPC分类号： H03F1/0227 , H03F3/185 , H03F3/2171 , H03F3/68 , H03F2200/03 , H03F2200/102 , H03F2200/435 , H04R3/007 , H04R29/001
摘要： Embodiments of the disclosure may include a method and apparatus for improving the efficiency and extending the operation time between recharges or replacement batteries of a portable audio delivery system. The audio delivery system may include a processor, an audio processing device, a speaker, and a rechargeable power source. The audio delivery system is generally configured to generate and/or receive an audio input signal and efficiently deliver an amplified, high quality audio output signal to a user. In some embodiments of the disclosure, the audio processing device of the audio delivery system may include a switch mode power supply (SMPS), a signal delay element, an envelope detector, and a switching signal amplifier.

8. 发明授权

US09628064B2 Multiphase pulse width modulator for class D audio amplifiers 有权
公开(公告)号：US09628064B2
公开(公告)日：2017-04-18
申请号：US14917688
申请日：2014-09-01
申请人： Merus Audio ApS
发明人： Allan Nogueras Nielsen , Mikkel Høyerby
IPC分类号： H03F99/00 , H03K7/08 , H03F3/217 , H03F3/183 , H03K4/08 , H04R3/00 , H02M3/158
CPC分类号： H03K7/08 , H02M2003/1586 , H03F3/183 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/129 , H03F2200/351 , H03K4/08 , H04R3/007
摘要： A multiphase pulse width modulator (PWM) producing N mutually phase shifted PWM signals, which is well-suited for class D audio amplifier applications. The multiphase PWM includes (a) N+1 (N ≧2) analog triangular waveform generators producing N+1 mutually phase shifted triangular waveforms, and (b) N+1 comparators each having a first input coupled to each of the N+1 triangular waveforms and a second input coupled to an audio signal to generate N+1 mutually phase shifted PWM phase signals. A crosspoint switch includes N+1 inputs coupled to the N+1 PWM phase signals, and N outputs to supply the N PWM signals. A crosspoint switch controller selectively connects each of the N+1 inputs to each of the N outputs for a duration of a cycle time in a time sequence to simultaneously generate the N PWM signals such that each signal has interleaved time segments of the N+1 PWM phase signals.

9. 发明授权

US09515617B2 Audio amplifier using multi-level pulse width modulation 有权
标题翻译：音频放大器采用多级脉宽调制
公开(公告)号：US09515617B2
公开(公告)日：2016-12-06
申请号：US13881509
申请日：2011-10-27
申请人： Mikkel Høyerby
发明人： Mikkel Høyerby
IPC分类号： H03F99/00 , H03F3/00 , H03F3/217 , H02M7/487
CPC分类号： H03F1/0244 , H02M7/487 , H03F3/00 , H03F3/187 , H03F3/2173 , H03F3/2178 , H03F2200/03 , H03F2200/267 , H03F2200/333 , H04R3/02
摘要： The present invention relates in one aspect to a class D audio amplifier with improved output driver topology supporting multi-level output signals such as 3-level, 4-level or 5-level pulse width or pulse density modulated output signals for application to a loudspeaker load. The present class D audio amplifiers are particularly well-suited for high-volume consumer audio applications and solutions.
摘要翻译：本发明在一个方面涉及一种具有改进的输出驱动器拓扑的D类音频放大器，其支持诸如3电平，4电平或5电平脉冲宽度的多电平输出信号或用于应用于扬声器的脉冲密度调制输出信号加载。目前的D类音频放大器特别适用于大容量消费音频应用和解决方案。

10. 发明授权

US09450548B2 Method and apparatus for outputting audio signal 有权
标题翻译：用于输出音频信号的方法和装置
公开(公告)号：US09450548B2
公开(公告)日：2016-09-20
申请号：US13420195
申请日：2012-03-14
申请人： Jae-yong Cho , Hae-kwang Park
发明人： Jae-yong Cho , Hae-kwang Park
IPC分类号： H03F99/00 , H03F3/217
CPC分类号： H03F3/217
摘要： An apparatus for outputting audio signals. The apparatus for outputting audio signals includes a pulse density modulation (PDM) unit for PDM modulating an input audio signal to output a modulated audio signal, a driving signal generator for generating at least one driving signal to control switching amplification operations based on the modulated audio signal, and a power switching amplifier having at least one switch that is turned on or turned off in response to the driving signal and performs the switching amplification operations for using the at least one switch to output an amplified audio signal that corresponds to the modulated audio signal, wherein the at least one switch includes at least one from among a gallium nitride (GaN) transistor, gallium arsenide (GaAs) transistor, and a silicon carbide (SiC) transistor.
摘要翻译：一种用于输出音频信号的装置。用于输出音频信号的装置包括用于PDM调制输入音频信号以输出调制音频信号的脉冲密度调制（PDM）单元，用于产生至少一个驱动信号以驱动基于调制音频的开关放大操作的驱动信号发生器信号和功率开关放大器，其具有响应于驱动信号而导通或截止的至少一个开关，并且执行用于使用至少一个开关的开关放大操作以输出对应于调制音频的放大的音频信号信号，其中所述至少一个开关包括氮化镓（GaN）晶体管，砷化镓（GaAs）晶体管和碳化硅（SiC）晶体管中的至少一个。

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