Abstract:
PROBLEM TO BE SOLVED: To provide a wavefront synthesis signal conversion device that calculates a wavefront synthesis reproduction signal from a specification, such as an assumed number of speakers and assumed spaces between the speakers, in accordance with an actually used reproduction device and reproduces a synthesis sound field.SOLUTION: A wavefront synthesis signal conversion device comprises: a wavefront synthesis reproduction signal input part for inputting a first wavefront synthesis reproduction signal; a first wavefront synthesis reproduction condition input part for inputting a wavefront synthesis reproduction condition of the first wavefront synthesis reproduction signal; a second wavefront synthesis reproduction condition input part for inputting a wavefront synthesis reproduction condition that is different from the wavefront synthesis reproduction condition; and a wavefront synthesis reproduction signal conversion part for converting the first wavefront synthesis reproduction signal into a second wavefront synthesis reproduction signal corresponding to the wavefront synthesis reproduction condition inputted from the second wavefront synthesis reproduction condition input part.
Abstract:
PROBLEM TO BE SOLVED: To form a sound field so that a listener (a user) can sense a sound image and a stereophonic sense as intended by a content producer, even if the listener (the user) is not on a symmetric axis that is located in the middle of lateral speakers. SOLUTION: Sound signals of a plurality of channels supplied to each speaker of an array speaker system 34 are formed by a sound data decoder. A sound field generation processing circuit executes signal processing to the sound signals of a plurality of the channels by receiving control of a sound field control circuit. According to this signal processing, sound is emitted from each of sound sources as a pair, and the sound pressure level of the sound is raised as an angle, formed by a sound emitting direction (an incoming direction to the listener) of the sound sensed, as though emitted from a pair of the sound sources and a straight line connecting the sound sources as a pair becomes smaller. Consequently, the listener can sense the sound image at a prescribed position, even if the listener is located anywhere in a listening area. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve accuracy in the design and control of a sound field and easily and surely obtain a desired sound field in the case that sound fields by a plurality of speakers are composed and a sound is heard in a way as if to be jumped out by approaching a virtual point sound source to a listening region. SOLUTION: A control line S4 is set to a position close to speakers SP1, SP2, ..., SPm and in front of the speakers SP1, SP2, ..., SPm, a plurality of control points are set on the control line S4, the virtual point sound source 10 is set to a point opposite to the speakers SP1, SP2, ..., SPm with respect to the control line S4, a line including the point of the virtual point sound source 10 and in parallel with the control line S4 is selected for a listening side border S5, and a region at the side of a listener 7 within the listening side border S5 is selected for a region wherein sound fields are composed. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an acoustic reproducing apparatus capable of providing a sense of target sound image localization to a listener by using a standard head transmission characteristic. SOLUTION: In a microphone amplifier unit 40, only the high frequency components of a left collected sound signal SL1 to be inputted from a dummy head microphone 13 and the high frequency components of a right collected sound signal SR1 are delayed by a delay circuit 42. With this configuration, since reproduction sounds of low frequency components less affected by individual difference can be previously outputted from speakers 46, 47, a listener U in a reproduced sound field space 45 can feel the sense of sound image localization by a reproduced having the low frequency components arriving earlier. As the result, even if a standard head transmission characteristic is used, it is possible to allow the listener U in the reproduced sound field space 45 to feel the sense of target sound field localization. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To indicate the possibility of entry of recording reservation, when a viewer sets the recording reservation of program in a hard disk, by calculating the remaining capacity of the hard disk for reservation in execution of recording reservation. SOLUTION: When recording reservation is set through an operation input part 110, a system controller 80 judges a record which is automatically erased in reserved recording settings stored in a RAM 84 until the execution of the present recording reservation, and compares the remaining capacity of hard disks 61 to 63 at the time of the present recording reservation with a capacity necessary for the present reservation. When the capacity is judged to be short in size, possibility that recording by reservation cannot be made is indicated.
Abstract:
PROBLEM TO BE SOLVED: To obtain an output voice signal suitable for the hearing ability of a listener without predicting and specifying the level range of an input voice signal or the dynamic range of an audio output voice signal. SOLUTION: For the voice signal processor, an input voice signal is inputted from an input terminal 8, and the level of the input voice signal is detected by a level detecting means 1 so that the detected output can be obtained. Then, a gain control characteristic varying means 3 varies the gain control characteristic curve of an amplifier 2 by referring to an output from an output varying means 9 obtained by operating the external operating mechanism of the output varying means 9 by a listener and the detected output so that the voice output can be made suitable for the listening ability of the listener.
Abstract:
PROBLEM TO BE SOLVED: To provide a magnetic speaker and a magnetic earphone where the weight of a vibrating plate is reduced, an excellent high frequency sound characteristic is obtained, and a reproduced sound is obtained without causing undesired distortion when vibration amplitude of the plate is increased. SOLUTION: The transducer is provided with a magnetic vibration plate 22 and a drive section 16 that receives a drive current based on a voice signal and acts magnetic force changing in correspondence to the voice signal on the magnetic vibration plate 22 to vibrate the magnetic vibration plate 22, and the magnetic vibration plate 22 has a thin plate or a thin film base and a magnetic thin film layer coated on the base.
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit capable of reducing the number of pins without lowering the rate of failure detection at the time of test or lengthening the test time. SOLUTION: A test mode generating part 2 at least generates a test mode according to input selection from the outside. A control part 3 executes a program for test on the basis of the test mode generated at the test mode generating part 2. A logic operation part 4 generates data for test on the basis of an operation control signal generated by the execution of the above-mentioned program for test by the control part 3. RAM 5 stores the data for test generated by the logic operation part 4 according to the control by the control part 3. A circuit 6 for test derives the above-mentioned data for test read from the RAM 5 to the outside and captures data from the outside after the completion of operation corresponding to the above-mentioned test mode.
Abstract:
PROBLEM TO BE SOLVED: To reduce the effect of masking. SOLUTION: The circuit is provided with an amplitude changing circuit 15 that changes the amplitude of a consonant component of a voice signal, a start point detection circuit 23 that detects a start point of a voiced sound of the voice signal, an end point detection circuit 23 that detects an end point of the voiced sound of the voice signal, a control circuit 24 that controls the gain of the amplitude change circuit 15. The control circuit 24 applies a control signal to the amplitude change circuit 15 to increase its gain when the start point detection circuit 23 detects a start point and applies a control signal to the amplitude change circuit 15 to restore its gain when the end point detection circuit 23 detects the end point.
Abstract:
PURPOSE:To provide the hearing aid which adjusts the output sound volume most suitably for a sense of hearing of an aurally handicapped person. CONSTITUTION:This multichannel hearing aid which divides an input audio signal into plural frequency bands and amplifies the input audio signal with each frequency band as the unit is provided with critical band filter means 7a to 7e which extract signal components included in critical band widths of representative frequencies in respective divided frequency bands and gain control means 8a to 8e which compare the level total amounts of signal components extracted by critical band filter means 7a to 7e with preliminarily set limit levels and variably control the degrees of amplification of the input signal in respective frequency bands based on comparison results.