Patent application number | Description | Published |
20090052688 | REMOTE CONFERENCE APPARATUS AND SOUND EMITTING/COLLECTING APPARATUS - A speaker array and microphone arrays positioned on both sides of the speaker array are provided. A plurality of focal points each serving as a position of a talker are set in front of the microphone arrays respectively symmetrically with respect to a centerline of the speaker array, and a bundle of sound collecting beams is output toward the focal points. Difference values between sound collecting beams directed toward the focal points that are symmetrical with respect to the centerline are calculated to cancel sound components that detour from the speaker array to microphones. Then, it is estimated based on totals of squares of peak values of the difference values for a particular time period that the position of the talker is close to which one of the focal points, and the position of the talker is decided by comparing the totals of the squares of the peak values of the sound collecting beams directed to the focal points that are symmetrical mutually. | 02-26-2009 |
20090147967 | CONFERENCE APPARATUS - Microphone arrays, which are formed by arranging a plurality of microphones, are provided on a front side and a rear side of a housing, respectively. A virtual focus is set for each of the microphone arrays in a direction opposite to a direction in which sound is picked-up sound signals picked up by the plurality of microphones are delayed such that distances to the virtual focus are the same, and the delayed sound signals are synthesized. Therefore, sound in a sound-pickup area of a predetermined angle on each of the front side and the rear side can be picked up at a high level, and even though there is a noise source in areas other than the sound-pickup area, noise from the noise source is not picked up. | 06-11-2009 |
20090248408 | VOICE EMITTING AND COLLECTING DEVICE - A voice emitting and collecting device that is capable of picking up/outputting a voice emitted from a talker at a high S/N ratio by eliminating the influence of a diffracting voice despite a simple configuration is provided. A signal differencing circuit | 10-01-2009 |
20090274318 | AUDIO CONFERENCE DEVICE - A audio conference device capable of detecting a talker's direction exactly and collecting a sound emitted from this direction at a high signal S/N ratio is provided. A detecting beam generating portion | 11-05-2009 |
20090310794 | AUDIO CONFERENCE APPARATUS AND AUDIO CONFERENCE SYSTEM - To provide an audio conference apparatus and an audio conference system which can smoothly proceed with the audio conference by removing a recursion sound of the conference voice is achieved. An audio conference apparatus | 12-17-2009 |
20100166195 | ACOUSTIC APPARATUS - An acoustic apparatus without increasing noise etc. even when plural directional microphones collect sounds from a place of the same distances is provided. Sound signals output from the microphone arrays are subjected to phase shift by phase shift circuits | 07-01-2010 |
20100226514 | SOUND EMITTING AND COLLECTING APPARATUS - A sound emitting and collecting apparatus that can precisely detect the talker direction based on a collected sound signal even when a sound is emitted from a loudspeaker is provided. Microphone units MU | 09-09-2010 |
20110019836 | SOUND PROCESSING APPARATUS - A sound emission and collection device includes a main housing and two sub-housings. In the main housing, a microphone array is provided. Microphone arrays are also provided in the sub-housings. Sound collection directions of the microphone arrays are outer directions which are opposite a side of the main housing. The sub-housings are rotatably connected to the main housing. The sound emission and collection device generates a plurality of collected sound beam signals MB | 01-27-2011 |
20110317862 | SOUND PICKUP APPARATUS - A sound pickup apparatus, which can control directionality and has a simple structure, and in which a plurality of microphones can be provided so as to be floated by using the small number of parts, is provided. Three support columns | 12-29-2011 |
20120014535 | SOUND COLLECTION DEVICE - The invention provides a sound collection device having little error in a desired directivity. The sound collection device includes a unidirectional microphone | 01-19-2012 |