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公开(公告)号：US20230093582A1
公开(公告)日：2023-03-23
申请号：US17904971
申请日：2020-09-29
申请人： D&M Holdings, Inc.
发明人： Yoshiharu Imahama , Shunichi Tani
摘要： [Problem] To provide an AV amplifier with which it is possible to listen to multichannel audio without having to be equipped with a processing unit for processing multichannel digital signals and without wasting resources.
[Solution] The present invention is provided with an input unit for inputting digital data, an operation unit for accepting a reproduction indication, an interface unit for transmitting the digital data inputted by the input unit to a server and receiving an audio signal from the server, a reproduction unit for reproducing the audio signal received by the interface unit, an output unit for outputting the audio signal reproduced by the reproduction unit to a speaker, and a control unit for controlling the interface unit in accordance with the reproduction indication from a user having been accepted by the operation unit, the control unit controlling a server interface unit so that when audio reproduction is indicated, the digital data inputted by the input unit is transmitted to the server and the multichannel audio processed by the server is received and outputted to the reproduction unit.-
公开(公告)号：US11381958B2
公开(公告)日：2022-07-05
申请号：US14906918
申请日：2013-07-23
申请人： D&M HOLDINGS INC.
摘要： Described herein are methods and devices for configuring a wireless device using audio data that is transmitted from a mobile device to the wireless device via a wired connection. For example, wireless configuration data may be sent from an audio port of the mobile device to an audio port of the wireless device while the mobile device and the wireless device are temporarily connected via an audio cable. According to an example method, a mobile device may determine wireless configuration data associated with a wireless local area network. The mobile device may then send the wireless configuration data to a wireless device via an audio port of the mobile device, such that the wireless device may be configured to access the wireless local area network.
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公开(公告)号：US10587968B2
公开(公告)日：2020-03-10
申请号：US16076029
申请日：2016-09-13
申请人： D&M Holdings, Inc.
发明人： Koji Maeda
摘要： [Problem] In the case where an audio signal of the same source is output from a plurality of speakers, the speakers are adjusted so that the audio signals become optimal at a listening position. [Solution] Processing in which an audio signal output from a wireless speaker 1 is collected by a microphone of a controller 2 carried by a listener and a delay time is measured that is the difference between an output time of the audio signal from the wireless speaker 1 and an input time of the audio signal to the microphone of the controller 2 is performed on a plurality of the wireless speakers 1 that output an audio signal of the same source, and the delay times of the audio signals from these respective wireless speakers 1 are measured. Output timings of these respective wireless speakers 1 are adjusted on the basis of these delay times.
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公开(公告)号：US20200029162A1
公开(公告)日：2020-01-23
申请号：US16498477
申请日：2017-09-21
申请人： D&M Holdings, Inc.
发明人： Keishi Matsunaga
IPC分类号： H04R29/00 , H04R3/04 , G10L21/0264
摘要： [Problem] To provide an audio device capable of further reliably accepting voice control even during playback. [Solution] An audio device 2 comprises: a parameter determination unit 30 that determines an echo-back parameter for canceling a wraparound signal that enters voice-control microphones 20-1, 20-2 as the audio from a speaker during playback; a filter processing unit 27 that performs filtering using the echo-back parameter for audio signals collected by the voice-control microphones 20-1, 20-2 during playback; a voice recognition unit 28 that performs voice recognition processing for a filtered audio signal; and an operation acceptance unit 29 that accepts voice control on the basis of the voice recognition results. The parameter determination unit 30 outputs a test signal from a speaker and collects the test signal through the voice-control microphones 20-1, 20-2, and determines the echo-back parameter on the basis of the delay time and the attenuation rate of the collected audio signal relative to the test signal.
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35.发明申请公开(公告)号：US20190191248A1
公开(公告)日：2019-06-20
申请号：US16322184
申请日：2017-08-01
申请人： D&M Holdings, Inc.
发明人： Brendon Stead , Achim Schulz
CPC分类号： H04R5/02 , H04R1/02 , H04R1/025 , H04R1/403 , H04R29/002 , H04S3/008 , H04S7/305 , H04S2420/01
摘要： A sound bar is provided which includes a generally elongate rectangular structure, with one angled output face having a plurality of speakers disposed therein, to thereby provide enhanced audio output. The sound bar is beneficially provided with a single mounting surface configured and arranged such that the sound bar can be mounted on both a table/shelf (horizontal orientation) and a wall (vertical orientation) via the single mounting surface by rotating the sound bar 180°, wherein the audio output in both mounting orientations is a multi-directional 3D audio output that travels to and bounces off both the walls and the ceiling of a room in which the sound bar is located.
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公开(公告)号：US10310806B2
公开(公告)日：2019-06-04
申请号：US15760419
申请日：2016-03-15
申请人： D&M Holdings, Inc.
发明人： Sho Kodama
摘要： To provide a technology capable of changing an output characteristic of music data more efficiently with a simpler operation irrespective of whether or not the music data is being played back, an audio controller (2) identifies a usage environment of a wireless speaker (1) from picked-up image data on an installation room of the wireless speaker (1). Then, an output characteristic suitable for the identified usage environment is selected, and the selected output characteristic is set as an output characteristic of music data to be output from the wireless speaker (1). In this case, a ratio between a width of a wall behind the wireless speaker (1) and a width of the speaker is obtained from the picked-up image data obtained by picking up an image of the installation room of the wireless speaker (1) so that boundaries between the wall behind the wireless speaker (1) and both sides thereof are aligned with both edges of an angle of view, and a size of the installation room of the wireless speaker (1) is identified based on this ratio to be used as the usage environment. Further, an installation position of the speaker is identified based on a display position of the speaker in the picked-up image data to be also used as the usage environment.
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公开(公告)号：US20170330571A1
公开(公告)日：2017-11-16
申请号：US15522403
申请日：2015-09-07
申请人： D&M Holdings, Inc.
发明人： Masato Komaki
IPC分类号： G10L19/02
CPC分类号： G10L19/02 , A61B5/121 , G10L21/00 , G11B2020/10564 , H04L67/306 , H04R5/04 , H04R25/70 , H04R2205/041
摘要： [Problem]To provide an audio device with which it is possible to efficiently utilize the storage capacity of a storage device for storing audio data. [Solution] In this audio device 1, in accordance with user profile information stored in a profile information storage unit 102, audio data inputted to an audio data input unit 103 is subjected by a filter unit 104 to a process of cutting a frequency band higher than the highest frequency audible to the user) and/or a frequency band lower than the lowest frequency audible to the user, and the data is then encoded by a codec unit 105, and stored to an audio storage device 100. Audio data can thereby be stored in the audio storage device 100 in compressed form with no noticeable decline in sound quality to the user, making it possible to store more audio data, such as music, in the audio storage device 100.
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公开(公告)号：USD746254S1
公开(公告)日：2015-12-29
申请号：US29497347
申请日：2014-07-23
申请人： D&M HOLDINGS INC.
设计人： Reiko Ito
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公开(公告)号：US20150281828A1
公开(公告)日：2015-10-01
申请号：US14370946
申请日：2012-11-30
申请人： D&M Holdings, Inc.
发明人： Osamu Horikawa
IPC分类号： H04R1/10
CPC分类号： H04R1/1058 , H04R1/1008 , H04R1/1066 , H04R1/1075 , H04R5/0335
摘要： [Problem] To prevent sound leakage through gaps between the wearing surface side of ear pads and areas around the ears when headphones are worn and used by a user. [Solution] For headphones that have ear pads which are attached to the surfaces of housing sections, each having a built-in speaker driver for outputting an audio signal as sound, which come in contact with the ears of a listener, convex sections in the form of gradually curved surfaces are provided in the wearing surface regions of the ear pads that come in contact with an upper anterior side of the head of the listener and a lower posterior side of the head of the listener, whereby the ear pads are shaped to fit well to the areas around the ears of the user without forming any gaps when the ear pads are worn.
摘要翻译： [问题]为了防止当耳机佩戴和使用时耳塞的佩戴面侧和耳朵周围的区域之间的间隙泄漏。 [解决方案]对于具有附接到壳体部分表面的耳垫的耳机，每个耳机具有内置的扬声器驱动器，用于输出与收听者的耳朵接触的声音作为声音的音频信号， 在与收听者头部的上前侧接触的耳垫的磨损表面区域和收听者的头部的后后侧设置逐渐曲面的形式，由此将耳垫成形为 适合用户耳朵周围的区域，而不会在耳垫磨损时形成任何间隙。
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公开(公告)号：US11876847B2
公开(公告)日：2024-01-16
申请号：US16965059
申请日：2019-01-28
申请人： D&M Holdings, Inc.
发明人： Douglas McKenzie
IPC分类号： H04L65/60 , H04L67/1095 , H04N21/43
CPC分类号： H04L65/60 , H04L67/1095 , H04N21/43076
摘要： A second media rendering device in a network is synchronized with a first media rendering device in the network. At a first time s1, the second media rendering device sends a request for a current audio sample index from the first media rendering device. The first media rendering device receives the request for the current audio sample index from the second media rendering device. The first media rendering device sends a message including a first current audio sample index equal to a value for a first media rendering device internal sample index. At a second time s2 the second media rendering device receives the first current sample index value from the first media rendering device. The second media rendering device determines a transmission latency, and estimates an updated first media rendering device internal sample index value.
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