Abstract: An audio device uses a multi-way speaker device, an ideal state being when the virtual sound source points of each unit group overlap and the spherical surface of the wavefront of the sound output from each speaker unit group overlaps one spherical surface. In order for the virtual sound source points of each unit group to be close to each other so that the wavefront of the sound output from each unit group is approximated to one spherical surface. A positioning a placement position of the speaker unit group having relatively small diameters rearward from a viewing position with respect to a placement position of the speaker unit group having relatively large diameters, and/or making the number of speaker units constituting the speaker unit group having relatively small diameters larger than the number of speaker units constituting the speaker unit group having relatively large diameters is adopted.

Abstract: An audio device uses a multi-way speaker device, an ideal state being when the virtual sound source points of each unit group overlap and the spherical surface of the wavefront of the sound output from each speaker unit group overlaps one spherical surface. In order for the virtual sound source points of each unit group to be close to each other so that the wavefront of the sound output from each unit group is approximated to one spherical surface. A positioning a placement position of the speaker unit group having relatively small diameters rearward from a viewing position with respect to a placement position of the speaker unit group having relatively large diameters, and/or making the number of speaker units constituting the speaker unit group having relatively small diameters larger than the number of speaker units constituting the speaker unit group having relatively large diameters is adopted.

Abstract: A method and apparatus for evaluating audio device for evaluating performance of an audio device by inputting into the audio device an audio signal having a waveform in which a plurality of waves with different frequency components are superimposed, comparing the sound waveform before the input and the sound waveform after the input, and finding the degree of conformity therebetween. An audio device is characterized in that, with sound field correction as a precondition, low-pitch ranges can be reproduced by using numerous small-diameter speakers, a single one of which is insufficient to reproduce low-pitch ranges despite good group delay characteristic, and outstanding waveform reproducibility can be achieved by covering the periphery of the speakers with sound-absorbent material so as to remove noise emitted by surfaces other than the front surface of cone paper.

Abstract: Provided are method and apparatus for evaluating audio device for evaluating performance of an audio device by inputting into the audio device an audio signal having a waveform in which a plurality of waves with different frequency components are superimposed, comparing the sound waveform before the input and the sound waveform after the input, and finding the degree of conformity therebetween. An audio device of the present invention is characterized in that, with sound field correction as a precondition, low-pitch ranges can be reproduced by using numerous small-diameter speakers, a single one of which is insufficient to reproduce low-pitch ranges despite good group delay characteristic, and outstanding waveform reproducibility can be achieved by covering the periphery of the speakers with sound-absorbent material so as to remove noise emitted by surfaces other than the front surface of cone paper.

Abstract: Provided are method and apparatus for evaluating audio device for evaluating performance of an audio device by inputting into the audio device an audio signal having a waveform in which a plurality of waves with different frequency components are superimposed, comparing the sound waveform before the input and the sound waveform after the input, and finding the degree of conformity therebetween. An audio device of the present invention is characterized in that, with sound field correction as a precondition, low-pitch ranges can be reproduced by using numerous small-diameter speakers, a single one of which is insufficient to reproduce low-pitch ranges despite good group delay characteristic, and outstanding waveform reproducibility can be achieved by covering the periphery of the speakers with sound-absorbent material so as to remove noise emitted by surfaces other than the front surface of cone paper.

Abstract: A method and apparatus for evaluating audio device for evaluating performance of an audio device by inputting into the audio device an audio signal having a waveform in which a plurality of waves with different frequency components are superimposed, comparing the sound waveform before the input and the sound waveform after the input, and finding the degree of conformity therebetween. An audio device is characterized in that, with sound field correction as a precondition, low-pitch ranges can be reproduced by using numerous small-diameter speakers, a single one of which is insufficient to reproduce low-pitch ranges despite good group delay characteristic, and outstanding waveform reproducibility can be achieved by covering the periphery of the speakers with sound-absorbent material so as to remove noise emitted by surfaces other than the front surface of cone paper.