摘要:
A microphone unit comprises a vibratory diaphragm for detecting sound input through its first and second openings. The sound input through the first opening is guided to a front surface of the vibratory diaphragm while the sound input through the second opening is guided to a rear surface of the vibratory diaphragm so as to detect the sound by the vibration of the vibratory diaphragm. The microphone unit satisfies relation 0.76≦D/Δr≦2.0 where D is difference in time between the sound propagation time from the first opening to the front surface of the vibratory diaphragm and that from the second opening to the rear surface of the vibratory diaphragm, while Δr is distance between the first and second openings. The relation D/Δr≦2.0 can reduce far-field noise, while the relation 0.76≦D/Δr can increase the detection sensitivity to sound emitted from a null point.
摘要翻译:麦克风单元包括用于检测通过其第一和第二开口输入的声音的振动膜片。 通过第一开口输入的声音被引导到振动膜的前表面,同时通过第二开口输入的声音被引导到振动膜的后表面,以便通过振动隔膜的振动来检测声音。 麦克风单元满足关系0.76≦̸ D /&Dgr; r≦̸ 2.0其中D是从第一开口到振动隔膜的前表面的声音传播时间与从第二开口到后表面的声音传播时间之间的时间差 振动膜片,而&Dgr; r是第一和第二开口之间的距离。 关系D /&Dgr; r≦̸ 2.0可以减少远场噪声,而关系0.76≦̸ D /&Dgr; r可以增加对从零点发出的声音的检测灵敏度。
摘要:
A microphone unit includes: a partition member, including a vibration film configured to be vibrated by sound; a housing, defining an inner space, and formed with a first opening and a second opening, the inner space being divided into a first space and a second space by the partition member, the first space adapted to be communicated with an outer space via the first opening, and the second space adapted to be communicated with the outer space via the second opening; and a shutter, configured to close one of the first and second openings; and an amplifier, configured to: amplify an electric signal at a first gain when the shutter closes the one of the first and second openings; and amplify the electric signal at a second gain that is larger than the first gain when first and second openings are opened.
摘要:
A voice input device, a method for manufacturing the same, and an information processing system are provided. The voice input device has a function of removing a noise component and includes a first microphone 710-1 that includes a first vibrating membrane, a second microphone 710-2 that includes a second vibrating membrane, and a differential signal generation section 720 that generates a differential signal between a first voltage signal and a second voltage signal. The first and second vibrating membranes are disposed so that a noise intensity ratio is smaller than an input voice intensity ratio that represents the ratio to intensity of an input voice component. The differential signal generation section 720 includes a delay section 730 and a differential signal output section 740 that generates and outputs a differential signal with respect to a signal to which a delay is applied by the delay section.
摘要:
A voice input device includes a first microphone (710-1) that includes a first diaphragm, a second microphone (710-2) that includes a second diaphragm, and a differential signal generation section (720) that generates a differential signal that indicates a difference between a first voltage signal and a second voltage signal, the first diaphragm and the second diaphragm being disposed so that a noise intensity ratio is smaller than an input voice intensity ratio (input voice component intensity ratio), and the differential signal generation section (720) including a delay section (730), and a differential signal output section (740) that generates and outputs a differential signal based on a signal delayed by the delay section.
摘要:
A microphone unit includes: a housing which has an inner space; a partition member which is provided in the housing and divides the inner space into a first space and a second space, the partition member being at least partially formed of a diaphragm; and an electrical signal output circuit which outputs an electrical signal based on vibrations of the diaphragm. In the housing, a first through-hole through which the first space communicates with an outer space of the housing and a second through-hole through which the second space communicates with the outer space are formed.
摘要:
A microphone unit includes a case; a diaphragm arranged inside the case; and an electric circuit unit that processes an electric signal generated in accordance with vibration of the diaphragm. The case has a first sound introducing space that introduces a sound from outside of the case to a first surface of the diaphragm via a first sound hole; and a second sound introducing space that introduces a sound from outside of the case to a second diaphragm, via a second sound hole. A resonance frequency of the diaphragm is set in the range of ±4 kHz based on the resonance frequency of at least one of the first sound introducing space and the second sound introducing space.
摘要:
There is provided an integrated circuit device having a wiring board 1200′, the wiring board 1200′ including: a first vibrating membrane 714-1 which forms a first microphone; a second vibrating membrane 714-2 which forms a second microphone; and a differential signal generating circuit 720 which receives a first voltage signal obtained in the first microphone and a second voltage signal obtained in the second microphone and generates a differential signal indicating a difference between the first and second voltage signals, and a voice input device and an information processing system including the same. Accordingly, it is possible to realize a voice input element having a small size and a noise removal function with high accuracy.
摘要:
A voice input device, a method for manufacturing the same, and an information processing system are provided. The voice input device has a function of removing a noise component and includes a first microphone 710-1 that includes a first vibrating membrane, a second microphone 710-2 that includes a second vibrating membrane, and a differential signal generation section 720 that generates a differential signal between a first voltage signal and a second voltage signal. The first and second vibrating membranes are disposed so that a noise intensity ratio is smaller than an input voice intensity ratio that represents the ratio to intensity of an input voice component. The differential signal generation section 720 includes a delay section 730 and a differential signal output section 740 that generates and outputs a differential signal with respect to a signal to which a delay is applied by the delay section.
摘要:
A microphone unit (2) includes: a microphone substrate (13); and a partition unit (20) having a diaphragm (22). The microphone substrate (13) has a first substrate opening (14) and a second substrate opening (15). The partition unit (20) covers the first substrate opening (14) and the diaphragm (22) covers a part of the first substrate opening (14) so as to form an internal space containing an in-substrate unit space (12) formed at least in the microphone substrate (13) and communicating with outside from the diaphragm (22) via the first substrate opening (14) and the second substrate opening (15). This realizes a microphone unit in which a differential microphone configured by a single diaphragm is mounted with a high density.
摘要:
A voice input device includes a first microphone (710-1) that includes a first diaphragm, a second microphone (710-2) that includes a second diaphragm, and a differential signal generation section (720) that generates a differential signal that indicates a difference between a first voltage signal and a second voltage signal, the first diaphragm and the second diaphragm being disposed so that a noise intensity ratio is smaller than an input voice intensity ratio (input voice component intensity ratio), and the differential signal generation section (720) including a delay section (730), and a differential signal output section (740) that generates and outputs a differential signal based on a signal delayed by the delay section.