Abstract:
Provided is a sound emission and collection device capable of estimating the azimuth of a sound source (such as a main utterer) precisely without any processing load. The sound emission and collection device (1) is connected with another sound emission and collection device via a network or the like. The sound emission and collection device (1) receives a sound signal from another sound emission and collection device, as a sound emission signal (FE), and emits the same from a speaker (SP). The sound emission and collection device (1) collects the sound at microphones (MIC1 to MIC3), and produces sound collection beam signals (NE1 to NE3) of different azimuths. The sound emission and collection device down-samples the individual sound collection beam signals (NE1 to NE3), and filters out the echoes of the down-sampled sound collection beam signals (DNE1 to DNE3). The sound emission and collection device selects the sound collection beam signal (DNE1′) of the highest signal level from the echo-filtered sound collection beam signals (DNE1′ to DNE3′). The sound emission and collection device filters out the echoes of a sound collection beam signal (NE1) from the sound collection azimuth (D1) of the sound collection beam signal (DNE1′), and transmits the same to another sound emission and collection device.
Abstract:
The method for forming a stopper includes injection molding a stopper molding comprising a molding body portion which embeds an end portion of an element row, and a thin fin portion which extends outward from a periphery portion of the molding body portion on at least one end portion side of the element row, and forming a high frequency wave adhesion portion by adhering the fin portion of the stopper molding by a high frequency wave. By this, a fixing strength of the stopper can be increased, and the high frequency wave adhesion portion can be configured to bend easily by making a thickness of the high frequency wave adhesion portion thin, thereby stably forming the stopper which is difficult to detach for a long period of time.
Abstract:
In view of a communication system including communication apparatuses transmitting data and a distribution apparatus receiving data from each communication apparatus and distributing, it is provided with the distribution apparatus, the communication system and the communication method that implement reducing amounts of storage means utilized for temporally storing data received by the distribution apparatus from each communication apparatus.While the distribution apparatuses respectively include databases the databases are partitioned into common areas for storing data commonly shared with the distribution apparatuses and synchronized with each other, and non-common areas for storing data basically not transmitted between the ECUs connected to different communication lines. When receiving data from the ECU 4a, the distribution apparatus determines whether the received data should be stored on the common area or on the non-common area.
Abstract:
Disclosed are a flow-through washing method and a flow-through washing apparatus which efficiently remove dust adhering to the surface of a substrate and prevent dust from adhering to the surface of the substrate again after washing. The flow-through washing method runs washing liquid (L) inside a washing tank (2) in the lateral direction, and applies an ultrasonic vibration to the washing liquid (L) in a state in which an object (W) to be washed is immersed in this washing liquid (L), whilst washing this object (W). By regulating the flow rate of the washing liquid (L) flowing in any of the feed ports (3) and/or discharge ports (5) of a plurality of feed ports (3) which feed the washing liquid (L) to the washing tank (2) and plurality of discharge ports (5) which discharge washing liquid (L) from the washing tank (2), the washing liquid (L) inside the washing tank (2) can be set so as to run in a laminar flow state.
Abstract:
A liquid crystal display aimed at improving response speed, movie characteristics and viewing angle dependence of gradation is provided as having a liquid crystal panel including a plurality of gate lined selecting pixels and a plurality of data lines supplying pixel data, and a data driver dividing one frame into a plurality of fields to thereby convert a frame data into a field data, and supplying the field data to the data line, wherein in the last field out of the plurality of fields, the data line is applied with a first constant voltage, for the frame data ranging from the minimum gradation value to a first gradation value, and in the top field out of the plurality of fields, the data line is applied with a second constant voltage larger than the first constant voltage, for the frame data ranging from a second gradation value to the maximum gradation value.
Abstract:
An adaptive filter generates a pseudo echo sound signal based on a sound emission sound signal. An adder subtracts the pseudo echo sound signal from a low band component of a collected sound signal, thereby generating a sound signal with a first-adjusted low band component. An echo spectrum estimation section estimates and calculates a frequency spectrum of a reverberation echo this time from a spectrum of the pseudo echo sound signal this time, a frequency spectrum of the preceding reverberation echo, and an update coefficient based on an audio environment. An adder subtracts the frequency spectrum of the reverberation echo and the frequency spectrum of stationary noise from a spectrum of the sound signal with the first-adjusted low band component.
Abstract:
A video conference device capable of suppressing a processing burden of an echo canceller in such a situation that speakers, microphones, and a camera are arranged in close vicinity of a monitor is provided. A preliminary filter portion 18 is provided in a preceding stage of an echo canceller 19. The preliminary filter portion 18 has an LPF 181, a fixed filter 182, and a post processor 183. A controlling portion 14 sets a filter coefficient corresponding to a sound collecting beam signal that a signal selecting portion 17 selected, in the fixed filter 182. This filter coefficient is set to simulate a transfer function of an acoustic transfer system that feedbacks from the speakers to the microphones. A component of a low frequency band (e.g., 1 kHz or less) out of sound signals (input sound signals) being input into the speakers is input into the fixed filter 182, and a pseudo signal is produced. The pseudo signal (feedback component) is removed by the post processor 183, and a corrected sound collecting beam signal MSs is produced.
Abstract:
Various embodiments of top end stops for a slide fastener are made of resin and are each formed adjacent to an end portion of each of two rows of coupling elements provided along edge portions of a pair of fastener tapes. Each of the top end stops has a concave portion on an opposed face to the other top end stop, and each of the concave portions accomodate a slider therebetween when the slide fastener is colsed. A gap is formed between each top end stop and a coupling element disposed at the end portion of each row of the coupling elements, and an overlapping portion is formed in a bottom end of one of the top end stops, such that a coupling head of a mating coupling element is capable of overlapping the overlapping portion.
Abstract:
A level ratio calculation circuit calculates average signal level data of signal level data corresponding to each sound collection beam signal, and calculates a level ratio between the average signal level data and each of the signal level data. Since a diffraction sound is substantially equal to all the signal level data, a diffraction sound component of the average signal level data also becomes substantially equal. On the other hand, a collection sound from a speaker is specific to the signal level data of the corresponding sound collection beam signal. Therefore, at the level ratio, the portion corresponding to the diffraction sound is flat and a data level becomes high locally in only the portion corresponding to the collection sound. By using this, the sound collection beam signal including the collection sound is detected.
Abstract:
An article with a slide fastener in which when a tearing force is applied to an article provided with a slide fastener and a slider makes contact with an end stop, a connecting member having flexibility and connecting between rear faces of right and left fastener stringers is disposed at a position on a side of a fastener element near the end stop, at which the force is not transmitted directly to the slider, a covering tape for covering at least the end stop and the connecting member is disposed on a rear face of the article, so that fastener elements and end stop are blocked from being damaged or the fastener elements are prevented from being dropped out of a fastener tape by a tearing force, and the connecting member is prevented from being hooked or caught by the slider so as to always realize a smooth slider operation.