| Patents for H04R 27 - Public address systems (2,454) |
|---|
| 06/18/2014 | CN103874004A Microphone |
| 06/18/2014 | CN102595298B Special sound amplifying system for stage |
| 06/12/2014 | WO2014062389A3 A telecommunications device |
| 06/11/2014 | CN203645811U 一种具有返听功能的新型音箱 A kind of back to listen to the function of the new speaker |
| 06/04/2014 | CN103830763A Smell release device and cinema playing system and fragrant alarm clock with same |
| 05/29/2014 | US20140146980 System and method for modular on-demand audio processing, amplification and distribution |
| 05/28/2014 | CN203616700U 一种应用在笔记本电脑上的腔体可扩展式扩音器 An application on a laptop cavity scalable loudspeakers |
| 05/27/2014 | US8737639 Voice amplification assembly |
| 05/27/2014 | US8737638 Audio signal processing device, audio signal processing system, and audio signal processing method |
| 05/27/2014 | US8737634 Wide area noise cancellation system and method |
| 05/21/2014 | CN203608359U 一种便携式无线数码教学扩音系统装置 A portable wireless PA system digital teaching device |
| 05/21/2014 | CN103813254A 具语音辅助的生物感测装置 A voice-assisted biological sensing device |
| 05/21/2014 | CN103799112A 带扩音器的尺寸稳定性好服装 Good dimensional stability of clothing with a megaphone |
| 05/21/2014 | CN103799109A 带扩音器的闪光服装 With a megaphone flash clothing |
| 05/20/2014 | CA2681915C Networked sound masking and paging system |
| 05/15/2014 | WO2014071573A1 Framework for hanging speakers over flat panel tv |
| 05/14/2014 | CN103796147A 一种广场舞无线音乐系统 One kind of square dance wireless music system |
| 05/14/2014 | CN103796146A 一种车载音响系统 An on-board audio system |
| 05/13/2014 | US8725277 Audio home network system |
| 05/13/2014 | US8724826 Apparatus and method for outputting an audio signal in a portable terminal |
| 05/08/2014 | DE102012110648A1 Locking element for use in connecting arrangement for connecting one element to another element of assembly, has locking unit, with which bolt is locked in different axial position as extended axial position |
| 05/07/2014 | CN203590460U 一种功放机后面板 One kind of amplifier rear panel |
| 05/07/2014 | CN203590406U 耳机 Headphone |
| 05/07/2014 | CN103767139A 带扩音器的舒适感与自由动感服装 Comfort and freedom of movement with a megaphone clothing |
| 05/07/2014 | CN103767135A 带扩音器的吸水、导水服装 Absorption band loudspeakers, water flowing clothing |
| 05/07/2014 | CN103767127A 带扩音器的导湿透气服装 Wet air conduction band loudspeakers clothing |
| 05/07/2014 | CN103767118A 带扩音器的环保服装 With loudspeakers environmentally friendly clothing |
| 04/24/2014 | WO2014062389A2 A telecommunications device |
| 04/23/2014 | CN203562195U Portable audio-visual vocal accompaniment device |
| 04/23/2014 | CN103747404A Surround-sound power-amplifier system |
| 04/22/2014 | US8705755 Statistical analysis of potential audio system configurations |
| 04/17/2014 | WO2014057406A1 Method and apparatus for audio interference estimation |
| 04/15/2014 | US8699716 Conference device and method for multi-point communication |
| 04/09/2014 | CN103716745A Indoor-mounted sound reinforcement system |
| 04/03/2014 | WO2014049268A1 Method and device for generating audio signals to be delivered to a sound reproduction system |
| 04/02/2014 | CN203523038U Loudspeaker for mobile portable equipment |
| 04/02/2014 | CN103702271A Amplifier back panel |
| 04/02/2014 | CN103702270A Free programming DIY (do-it-yourself) microphone |
| 03/27/2014 | WO2014044954A1 Acoustic enclosure comprising input and output connection means linked together in such a way as to transmit inter alia electronic signals |
| 03/26/2014 | CN203504755U Broadcast units having fault detection functions and public broadcast system having same |
| 03/26/2014 | CN103686578A Microphone with programmable frequency response |
| 03/26/2014 | CN103686577A Couplable hearing apparatus for hearing device |
| 03/26/2014 | CN103686576A System and method for adjusting the sensitivity of a capacitive signal source |
| 03/19/2014 | CN203492200U General-purpose contact electrophone |
| 03/19/2014 | CN203492013U Team wisdom explanation system |
| 03/13/2014 | WO2014039258A1 Directional sound systems and related methods |
| 03/12/2014 | CN203482193U Helmet individual propaganda megaphone |
| 03/12/2014 | CN103636235A Equalization of speaker arrays |
| 03/11/2014 | US8670573 Low latency ultra wideband communications headset and operating method therefor |
| 03/06/2014 | WO2014036560A1 Smart notification tool for headphones |
| 03/05/2014 | EP2702751A1 Conference device |
| 03/05/2014 | CN203466969U Sound focusing device |
| 03/05/2014 | CN103618986A Sound source acoustic image body extracting method and device in 3D space |
| 02/26/2014 | EP2701405A2 Localization algorithm for conferencing |
| 02/26/2014 | CN203457324U New emergency alarm loudspeaker |
| 02/26/2014 | CN103609142A Isolator device for passing through a signal |
| 02/26/2014 | CN103607685A Sound amplification device used on automobiles |
| 02/25/2014 | US8660273 Interface circuit and electronic device using the same |
| 02/19/2014 | EP2697984A1 Bidirectional communication system, and method for compensating for undesired feedback in the bidirectional communication system |
| 02/19/2014 | CN103597858A Multi-channel pairing in a media system |
| 02/19/2014 | CN103596113A Public address device |
| 02/19/2014 | CN102100087B System, converter and method for wide area distribution of supervised emergency audio |
| 02/18/2014 | US8654995 Audio control system for a vehicle |
| 02/12/2014 | EP2695400A1 Multi-channel pairing in a media system |
| 02/12/2014 | CN203435145U Wireless-connection induction sound box |
| 02/12/2014 | CN103581817A Intelligent switching method for PA (power amplifier) system |
| 02/12/2014 | CN103581816A Wireless multi-room music system synchronization mechanism based on UPnP protocol |
| 02/11/2014 | US8649527 Amplifier circuit, electronic device, method for configuring an amplifier circuit |
| 02/11/2014 | US8649523 Methods and systems using a compensation signal to reduce audio decoding errors at block boundaries |
| 02/06/2014 | US20140037105 Digital audio communication and control in a live performance venue |
| 02/05/2014 | CN203423801U Ceiling type acousto-optic combination sound equipment |
| 01/29/2014 | EP2689593A2 Isolator device for passing through a signal |
| 01/29/2014 | CN103546851A Sound gathering device |
| 01/23/2014 | WO2014013530A1 Public address system and monitoring device for a public address system |
| 01/23/2014 | US20140023204 Public address system using wireless mobile communication devices |
| 01/22/2014 | CN203407018U Sound amplifying system of wireless automatic frequency modulation microphone |
| 01/22/2014 | CN203407017U 网络型数字功放 Network-based digital amplifier |
| 01/22/2014 | CN103533495A Automatic broadcast broadcasting system capable of remotely editing and controlling program broadcasting list and program file |
| 01/15/2014 | CN203399288U Remote-control audio frequency power amplification device |
| 01/15/2014 | CN203399287U Fire-fighting early-warning broadcast power amplifier |
| 01/15/2014 | CN203388433U Arrangement structure of sound amplifying device for music knapsack |
| 01/15/2014 | CN103517196A A binaural listening system with automatic mode switching |
| 01/08/2014 | CN203387678U Conference host with recording function |
| 01/01/2014 | CN203378040U High fidelity acoustic transmission sound box |
| 01/01/2014 | CN203378039U D-class power amplifier loudspeaker |
| 01/01/2014 | CN103491492A Classroom sound reinforcement method |
| 12/31/2013 | US8620005 All-digital speaker system device |
| 12/25/2013 | EP2486662B1 Self-discovery of an rf configuration for a wireless system |
| 12/25/2013 | CN203368760U Signal reception structure of wireless microphone |
| 12/25/2013 | CN203368759U Indoor sound amplifying and recording device |
| 12/25/2013 | CN203368758U Stage sound equipment system and stage structure |
| 12/25/2013 | CN103475988A Classroom wireless microphone |
| 12/25/2013 | CN103475987A Wireless audio system and method of wireless audio system |
| 12/25/2013 | CN103475976A Electronic device directional audio capture |
| 12/19/2013 | WO2013186823A1 Public address system and control device for public address system |
| 12/19/2013 | WO2013186812A1 Public address system |
| 12/19/2013 | WO2013185524A1 Magnetic induction audio equipment |
| 12/19/2013 | WO2013185410A1 Tablet computer support sound box |
| 12/18/2013 | CN203352795U Hand-held energy-saving recording megaphone |
| 12/18/2013 | CN203352794U Square dance wireless music system |