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WO/1995/010894A1 |
A signal distribution and communication arrangement includes a main control unit (10) remotely located and electrically coupled to a volume control panel (48). The volume control panel (48) is located near a speaker (14), and the main co...
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WO/1995/010927A1 |
An audio distribution system includes a main control unit for distributing audio signals to a plurality of zones using a remote programming unit and a plurality of zone input panels for commanding the types of audio signals to be routed ...
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WO/1995/010896A1 |
The present invention provides a distribution system for audio and video services from a centralized equipment (212, 218, 226) through an optical carrier (16) to multiple locations in a facility. The terminal equipment reversibly convert...
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WO/1995/010831A1 |
A multi-channel reverberation system has a substantially constant multi-channel power gain at audio frequencies and comprises multiple signal inputs, one for each input channel, a number of comb filter networks connected to each signal i...
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WO/1995/009517A1 |
A transmitter (10) and one or more receivers (12) are linked by infrared transmission via LED (14) and photodiode (16). In normal use, in-flight entertainment is modulated on left and right channels to give stereo sound on a user's earph...
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WO/1995/008906A1 |
A digitally controlled analog cancellation system containing an analog noise cancellation circuit with a residual microphone (39) with a digital virtual earth controller (40) for optimizing variable parameters employed in the analog canc...
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WO/1995/008249A1 |
The AM signal (12a) from a microphone (11) is converted (13) into an inaudible, FM signal (13a) which is combined (14) with the AM signal to form a composite signal (14a). The composite signal is amplified (16) and converted into sound w...
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WO/1995/005047A1 |
Our audio processing system for use in teleconferencing systems includes a microphone (1-25), receiver (1-26), and substantially the same comb filter (1-42) and frequency scaler (1-60) at each station for reducing acoustic echo and incre...
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WO/1994/028679A1 |
A passenger entertainment system employing an improved digital audio signal distribution system and method for use on commercial aircraft and other vehicles. A plurality of digital audio signal sources (12) are provided for generating a ...
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WO/1994/027397A1 |
A portable computer (11) is supplied with control routines for providing a sophisticated touch-tone dialer operable through existing or supplied speaker output, enabling calls to be routed without making a direct connection between the t...
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WO/1994/022277A1 |
A sound pick-up and reproduction apparatus (Aac) which is rotatable about an axis (D) and includes a mounting (1), a sound pick-up device (2) and a sound reproduction device (3) with a convex or planar surface (revolving cone) opposite t...
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WO/1994/004010A1 |
An audio enhancement system (20) and method of use with a sound system for producing primary sound from at least one main loudspeaker (23) located at a main position. The audio enhancement system (20) comprises at least one wireless tran...
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WO/1993/014611A1 |
A signal distribution and communication arrangement controls the broadcast of different types of signals through speakers (A-D) located in various zones. The system includes a telephone (105) interfaced with a door speaker (104) controll...
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WO/1993/014575A1 |
A multi-zone audio distribution amplifier system includes positions for several stereo amplifiers which may be used as modular and cascadale amplifier units. The system is enclosed in a housing (10) having a front panel with windows for ...
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WO/1993/007730A1 |
Several microphones (M1, M3) are arranged substantially in the same plane (P) and they are symmetrically distributed in relation to a direction of symmetry (D) at right angles to said plane (P). Dephasing is applied to the signals provid...
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WO/1992/012606A1 |
A signal distribution and communication arrangement (100) controls the broadcast of different types of signals through speakers located in various zones (A-D). The arrangement includes an audio receiver circuit (102) which responds to a ...
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WO/1992/010917A1 |
The device comprises a microphone (2) and a speaker (3) arranged one on top of the other with the microphone pointing downwards at a horizontal supporting surface (10) and the speaker pointing upwards and mounted in a cavity (6) which ha...
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WO/1992/005673A1 |
Both homogeneity and polyphonic effect are obtained by creating a plurality of sound propagation directions which converge to a same location (3) where the audience is placed. Loudspeaker enclosures (10, 111-141) are distributed along ea...
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WO/1991/009396A1 |
A loudspeaker (10) for projection sound over a listening area having a driver (22) and a horn (24) in which the horn has a coupling portion (42) communicating at an interface (47) with an outwardly flaring portion (44), the horn (24) for...
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WO/1991/005445A1 |
The hand held auditory assistance apparatus includes in a casing (100) a microphone (190) and electronic means (192, 194) for amplifying and regulating electric signals coming from the microphone. Such apparatus has also on the internal ...
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WO/1990/011669A1 |
A method and apparatus for controlling the sound pressure levels of a substantially capacitive speaker (11 or 21). The controlling element is substantialy capacitive and may be either fixed (12) or variable (20).
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WO/1989/012373A1 |
One-dimensional reproduction of stereophonic sound, wherein at least two microphones (70, 75) sense the sounds produced by at least one sound-generating point source (50), is achieved by reproducing the sounds sensed by the microphones (...
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WO/1989/008970A1 |
An audio frequency amplifier particularly for an induction loop system (19) wherein the input to said amplifier, consisting of stages (17, 18), includes a variable cut-off low pass filter (13). This filter controls the bandwidth of the a...
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WO/1989/003919A1 |
This invention relates to a device for generating sound in a hall comprising a first space for dancers and/or listeners and an adjacent second space, for instance a catering space. According to the invention a sound-ceiling (4) is arrang...
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WO/1987/000366A1 |
An improved noise suppression system (400) which performs speech quality enhancement upon speech-plus-noise signal available at the input (205) to generate a clean speech signal at the output (265) by spectral gain modification. The nois...
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WO/1986/001670A1 |
A parametric speaker which reproduces audible sound having sharp directivity by utilizing non-linearity of the air for ultrasonic waves. Namely, the invention provides a listening area-limiting loudspeaker system wherein provision is mad...
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WO/1985/003582A1 |
An electrical circuit for the control of a parameter of sound, lighting, etc. within an auditorium by a selected one of a plurality of interconnected controlling devices, wherein each of the devices comprises a manual control (R4) for sa...
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WO/1980/001529A1 |
A multiple source input amplifying and activation system including one first microphone (M1) to generate a first source input signal and a second microphone (M2) to generate a second input signal, an input channel for each microphone whe...
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JP2024059052A |
[Problem] In a conventional electric megaphone, the horn 54 resonates due to sound waves from the diaphragm 53 and vibrations transmitted from the diaphragm 53 to the peripheral support 60 and the horn driver cover 66, resulting in horn ...
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JP2024058610A |
A system and method for identifying which network device of a set of network devices is attached to a first attachment location of known attachment locations of the set of network devices at a management server. In the system, each netwo...
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JP7470543B2 |
To improve convenience of an operator of a wireless audio system.Wireless speakers 1 collect environmental sound in booths A to D in which the respective wireless speakers 1 are disposed and transmit sound pressure transition information...
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JP2024027513A |
An object of the present invention is to provide a sound masking device that can mask sounds leaking outside a booth with high accuracy using a simple method. A sound masking device (2) is for masking sound leaking outside the booth in a...
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JP2024004914A |
An object of the present invention is to appropriately communicate the occurrence of an emergency situation in a railway vehicle to passengers. [Solution] An automatic broadcasting system for a railway vehicle includes a broadcasting spe...
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JP7403074B2 |
To provide a voice output system capable of effectively letting a user smile.A voice output system 20 comprises a speaker 40 and outputs person's laughing voice from the speaker 40, which outputs, as person's laughs, (I) breathing sound ...
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JP7398703B2 |
To provide an acoustic control system that can execute active zoning by using a sound content and can prevent sound drop-out.Speaker systems 50a to 50d of an acoustic control system 10 each include a speaker element unit 51 for outputtin...
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JP2023177369A |
To obtain a guiding device that can disperse the number of people waiting at the reception desk such that the overall flow of people can proceed smoothly.A guiding device 10 that guides people waiting at a reception desk to a desired are...
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JP7390691B2 |
To express various messages in Japanese and in a language other than Japanese.A disaster prevention tool 3 includes a light emission part 22, a speaker 23, a microphone 24, a voice button 26, a control part 41, an origination part 42, an...
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JP7366776B2 |
To implement efficient call broadcasting without waste in private broadcasting.In a broadcast control device 10 for controlling audio outputs from a plurality of speakers 20 arranged in a facility, an accept information acquisition unit ...
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JP2023154233A |
To automatically select an appropriate loud-speaking mode depending on usage and/or importance.A loud-speaking broadcast system (1) includes an IP speaker (20) and a terminal (10). The IP speaker (20) can receive audio data or a loud-spe...
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JP2023150748A |
To provide a broadcast wireless system capable of correctly transmitting audio to a resident, and a public-address slave station and a signal processing device for the broadcast wireless system.A broadcast wireless system according to an...
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JP7357561B2 |
To enable facility users to hear environment information through a speaker placed in the facility.In a broadcast control device 10 controlling audio outputs from a plurality of speakers 20 placed in a facility 100, a weather information ...
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JP2023139492A |
To provide a station service apparatus, a ticket vending machine, a ticket examination machine, and a control program for a station service apparatus that eliminate the need to perform a manual setting operation and can output an easily ...
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JP2023122019A |
To form an acoustic environment capable of improving sound quality in a ventilated space while ventilating the ventilated space.An acoustic device with a ventilation function comprises an acoustic duct provided in a ventilated space of a...
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JP2023114846A |
To provide a wireless microphone system and a wireless microphone system setting method, capable of performing control depending on a position of a wireless microphone.A wireless microphone system 1 comprises: at least one wireless micro...
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JP7288437B2 |
The present invention relates to a spatial arrangement for optimizing the broadcasting of a sound signal and thus replacing the conventional stereo systems. For this purpose, the spatial arrangement is capable of broadcasting a spatializ...
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JP2023048662A |
To provide a loudspeaker broadcast server that provides a more favorable loudspeaking experience to listeners in a loudspeaker space.In a public address system 1, a data management server 20, which is a public address broadcasting server...
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JP2023048970A |
To provide a voice amplification system that can provide a more desirable experience of voice amplification to a viewer in a loudspeaker space.A loudspeaker system 1 includes at least one voice amplification device 11 set in at least one...
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JP2023031528A |
To provide a technique capable of effectively notifying a notification target person of information.An information notification device includes a notification unit, a reaction detection unit, and a control unit. The notification unit mak...
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JP7215337B2 |
To perform easy-to-listen notification about security with sufficient sound pressure, in a terminal device.On one lateral face of an enclosure for receiving a board on which an electronic component realizing a function of a terminal devi...
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JP7196184B2 |
A public address method for live broadcast, in a helmet, of an audio signal conditioned from a plurality of raw audio channels, includes a pre-processing phase including the operations that consist of taking into account characteristics ...
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