Abstract: A sound output device according to an embodiment includes: an acoustic path (70) and a microphone (100b). The acoustic path connects a first space (54b) formed on a front surface of a driver unit (106) and the outside of a housing (50b) including the driver unit separately from a second space (55b) formed on a back surface of the driver unit. The microphone is disposed in the vicinity of an opening where the acoustic path is connected to the outside of the housing.

Abstract: The problem to be solved is to improve a noise cancelling function. A detection microphone, a speaker, and a housing are included. The detection microphone detects noise and has an input vibrating plate. The speaker has an output vibrating plate. The housing accommodates at least the speaker and the detection microphone therein. The input vibrating plate and the output vibrating plate are disposed approximately in the same orientation. This ensures that a sound is output from the speaker while a sound is input to the detection microphone with the input vibrating plate and the output vibrating plate facing each other, thus making it possible to bring the input vibrating plate and the output vibrating plate closer to each other. As a result, it is less likely for a phase lag to take place between the sound output from the speaker and the sound input to the detection microphone, thus providing higher noise detection accuracy of the detection microphone and contributing to an improved noise cancelling function.

Abstract: There is provided a headphone device including: an external magnet type magnet unit that is disposed outside a voice coil, and vibrates the voice coil; and a diaphragm that is vibrated by vibration of the voice coil, and formed of a material in which a dome section having an outward concave shape on an inner circumference of the voice coil is continuous with an edge section outside the voice coil.

Abstract: To enable listening to audio in a more suitable mode without any complicated operation even in a situation in which the user's state or situation successively changes. An information processing device including: a recognition processing unit that recognizes a user's state in accordance with a detection result of a predetermined state or situation; and an output control unit that controls audio output from a predetermined output unit on the basis of a function map, which is selected in accordance with a predetermined condition, in which a setting related to control of the audio output is associated with each of a plurality of candidates for the user's state, and the recognized user's state.

Abstract: A sound output device according to an embodiment includes: an acoustic path (70) and a microphone (100b). The acoustic path connects a first space (54b) formed on a front surface of a driver unit (106) and the outside of a housing (50b) including the driver unit separately from a second space (55b) formed on a back surface of the driver unit. The microphone is disposed in the vicinity of an opening where the acoustic path is connected to the outside of the housing.

Abstract: There is provided a headphone device including: an external magnet type magnet unit that is disposed outside a voice coil, and vibrates the voice coil; and a diaphragm that is vibrated by vibration of the voice coil, and formed of a material in which a dome section having an outward concave shape on an inner circumference of the voice coil is continuous with an edge section outside the voice coil.

Abstract: To enable listening to audio in a more suitable mode without any complicated operation even in a situation in which the user's state or situation successively changes. An information processing device including: a recognition processing unit that recognizes a user's state in accordance with a detection result of a predetermined state or situation; and an output control unit that controls audio output from a predetermined output unit on the basis of a function map, which is selected in accordance with a predetermined condition, in which a setting related to control of the audio output is associated with each of a plurality of candidates for the user's state, and the recognized user's state.

Abstract: To enable listening to audio in a more suitable mode without any complicated operation even in a situation in which the user's state or situation successively changes. An information processing device including: a recognition processing unit that recognizes a user's state in accordance with a detection result of a predetermined state or situation; and an output control unit that controls audio output from a predetermined output unit on the basis of a function map, which is selected in accordance with a predetermined condition, in which a setting related to control of the audio output is associated with each of a plurality of candidates for the user's state, and the recognized user's state.

Abstract: The problem to be solved is to improve a noise cancelling function. A detection microphone, a speaker, and a housing are included. The detection microphone detects noise and has an input vibrating plate. The speaker has an output vibrating plate. The housing accommodates at least the speaker and the detection microphone therein. The input vibrating plate and the output vibrating plate are disposed approximately in the same orientation. This ensures that a sound is output from the speaker while a sound is input to the detection microphone with the input vibrating plate and the output vibrating plate facing each other, thus making it possible to bring the input vibrating plate and the output vibrating plate closer to each other. As a result, it is less likely for a phase lag to take place between the sound output from the speaker and the sound input to the detection microphone, thus providing higher noise detection accuracy of the detection microphone and contributing to an improved noise cancelling function.

Abstract: To enable listening to audio in a more suitable mode without any complicated operation even in a situation in which the user's state or situation successively changes. An information processing device including; a recognition processing unit that recognizes a user's state in accordance with a detection result of a predetermined state or situation; and an output control unit that controls audio output from a predetermined output unit on the basis of a function map, which is selected in accordance with a predetermined condition, in which a setting related to control of the audio output is associated with each of a plurality of candidates for the user's state, and the recognized user's state.

Abstract: There is provided a headphone device including a first housing and a second housing; a headband connected to the first and second housings; a first headphone unit and a second headphone unit disposed in the first and second housings, respectively; a first microphone and a second microphone arranged in the vicinity of the first and second headphone units; and a signal processing unit disposed in the first housing for processing input audio signals from the outside and microphone signals detected by the first and second microphones, and generating first and second noise-canceled audio signals to be supplied to the first and second headphone units.

Abstract: An electronic device housing, includes: a housing case including a housing area which houses a heat generating component; a duct, including ends which are in communication with the housing area at different positions respectively and a body portion disposed outside the housing area, in which first air inside housing case which is heated by the heat generating component flows; and a flow device, disposed in the housing case, configured to circulate the first air and make second air which radiates heat in the duct flow towards a side of the housing area side.

Abstract: An electronic device housing, includes: a housing case including a housing area which houses a heat generating component; a duct, including ends which are in communication with the housing area at different positions respectively and a body portion disposed outside the housing area, in which first air inside housing case which is heated by the heat generating component flows; and a flow device, disposed in the housing case, configured to circulate the first air and make second air which radiates heat in the duct flow towards a side of the housing area side.

Abstract: There is provided a headphone device including a first housing and a second housing; a headband connected to the first and second housings; a first headphone unit and a second headphone unit disposed in the first and second housings, respectively; a first microphone and a second microphone arranged in the vicinity of the first and second headphone units; and a signal processing unit disposed in the first housing for processing input audio signals from the outside and microphone signals detected by the first and second microphones, and generating first and second noise-canceled audio signals to be supplied to the first and second headphone units.

Abstract: A method of preventing an error of a pointer process in an SDH radio device which receives an STM frame having a section overhead and a payload therein includes the steps of distributing a pointer to unused bytes or undefined bytes in the section overhead of the STM frame, the pointer indicating a start position of multiplex data in the payload of the STM frame, and transmitting the STM frame to the SDH radio device.

Abstract: Herein disclosed are a radio receiving apparatus and a receiving system switching control method used in the radio receiving apparatus. The radio receiving apparatus has an active receiving system and a standby receiving system including respective equalizers, and a changeover switch for performing a switching between the active receiving system and the standby receiving system. The radio receiving apparatus further includes an alarm predicting information predicting means for detecting alarm predicting information in each of the equalizers and a switching control means for controlling a switching condition of the changeover switch on the basis of the alarm predicting information detected by the alarm predicting information detecting means, where the alarm predicting information as internal information of the equalizers is monitored to predict a malfunction of a receiving circuit to switch the circuit before the circuit is hit. It is therefore possible to reduce a hit rate of the circuit.

Abstract: A Viterbi decoder decodes a received signal having Ich and Qch components obtained by modulating a convolutional coded multi-valued QAM signal. The Viterbi decoder includes a first unit which inputs the received signal having the Ich and Qch components, a second unit which finds Euclidean distance between a predetermined signal point, which is one of a plurality of predetermined signal points allocated on a plane formed of Ich and Qch axes orthogonally crossed, and a signal point of the received signal, and a third unit which performs a Viterbi decoding based on the Euclidean distance obtained by the second unit.

Abstract: A radio receiver gradually changes the phase of a regenerated clock when an abnormal receiving condition is detected. Since clock phase changes gradually, an equalizer which reduces receiving distortion and a discriminator are periodically synchronized. As a result, if receiving distortion is reduced at this time, the operation of the equalizer and discriminator are normalized and the normal receiving condition can be recovered quickly.