To accurately achieve synchronization between a master and a slave that perform wireless communication.

A synchronization device that synchronizes time-series data between a master and a slave by wireless communication, the master including a packet transmission unit that transmits a plurality of packets at a predetermined interval, and the slave including a synchronization unit that synchronizes time-series data transmitted by the master and time-series data received by the slave on the basis of the interval between the plurality of packets.

A reproduction control method implemented by a computer includes receiving, from a first terminal device, a first reproduction request in accordance with an instruction from a first user, receiving, from a second terminal device, a second reproduction request in accordance with an instruction from a second user, acquiring a first acoustic signal representing a first sound in accordance with the first reproduction request, and a second acoustic signal representing a second sound which is in accordance with the second reproduction request and have acoustic characteristics that differ from acoustic characteristics of the first sound represented by the first acoustic signal, mixing the first acoustic signal and the second acoustic signal, thereby generating a third acoustic signal, and causing a reproduction system to reproduce a third sound represented by the third acoustic signal.

An audio content distribution system includes a server device and a user terminal. The server device includes an audio-data acquisition unit that acquires audio data from a distribution source, an audio-content-data generation unit that adds, to the audio data, acoustic-effect setting information indicating whether to add echo and/or attenuation of sound in a virtual reality space, and generates audio content data, and an audio-content-data distribution unit that distributes the audio content data to a user terminal of a user who operates an avatar in the virtual reality space. The user terminal includes an audio-content-data receiving unit that receives the audio content data from the server device, and an audio-data output-control unit that outputs the audio data stored in the audio content data with an acoustic effect according to the acoustic-effect setting information.

A signal processing system is a system in which a plurality of devices including at least a first terminal device and a second terminal device that receive streaming data are connected to a communication system capable of communicating with the plurality of devices. The signal processing system includes: a receiving unit that receives a designation of first sound data from the first terminal device that received the streaming data and a designation of second sound data from the second terminal device that received the streaming data; a signal processing unit that obtains first sound data corresponding to the received designation of first sound data and second sound data corresponding to the received designation of second sound data, and generates a third sound signal in which a first sound signal corresponding to the first sound data and a second sound signal corresponding to the second sound data are mixed.

[Problem] To generate acoustic profile information using a simple operation and without increasing the cost of a multichannel audio device. [Solution] A wireless recording playback terminal 5 is positioned at a listening point of a multichannel audio device 2 as a measuring microphone. The wireless recording playback terminal 5 records, as channel playback data in accordance with a test signal playback command received from the multichannel audio device 2, a test signal outputted from a speaker 3 that corresponds to the channel designated by the command. The wireless recording playback terminal 5 also plays back the sound source of the test signal and records the played-back sound source as sound source playback data without being outputted to the outside from the speaker. An acoustic profile information generation server 4 compares these playback data to measure the delay time and attenuation rate of the channel playback data with respect to the sound source playback data, generates the acoustic profile information of the designated channel on the basis of the result of this measurement, and sets the generated acoustic profile information to the multichannel audio device 2.

Road vehicle comprising at least one electric motor; an acoustic system, which comprises at least one reproduction device, which generates a sound that can be associated with the electric motor; wherein the electric motor is mechanically connected to the reproduction device so as to be able to excite a resonant frequency thereof; and a control unit configured to control the electric motor so as to inject at least one sonority current or voltage, as an input, to the electric motor itself; wherein said at least one sonority current or voltage excites a frequency resulting in a vibration of said at least one reproduction device, which emits, due to the vibration, in the form of acoustic waves, a sound as a function of the injected sonority current or voltage.

A motor vehicle includes an acoustic device configured to generate and capture acoustic waves, the acoustic device includes a vehicle part having a vibration region, and an actuator arranged thereon and configured to for excitation and detection of vibrations of the vehicle part in the vibration region, wherein the region is modified compared to an adjacent region of the vehicle part and has greater sensitivity to excitations in the frequency range of the acoustic wave.

Provided is a technique to generate a call environment that prevents call contents from being heard by a person other than a person speaking on the phone in a case where call voice is output from a speaker. Speakers installed in an automobile are denoted by SP.sub.1, ..., SP.sub.N, a first filter coefficient used to generate an input signal for a speaker SP.sub.n is denoted by F.sub.n (ω), and a second filter coefficient that is different from the first filter coefficient and is used to generate an input signal for the speaker SP.sub.n is denoted by .sup.~F.sub.n (ω). A call environment generation method includes: an acoustic signal generation step of generating, when detecting a start signal of a call, a call-time acoustic signal that is obtained by adjusting volume of an acoustic signal to be reproduced during the call, by using a predetermined volume value; a first local signal generation step of generating a sound signal S.sub.n as an input signal for the speaker SP.sub.n from a voice signal of the call by using the first filter coefficient F.sub.n (ω); and a second local signal generation step of generating an acoustic signal A.sub.n as an input signal for the speaker SP.sub.n from the call-time acoustic signal by using the second filter coefficient .sup.~F.sub.n (ω).

Provided is a technique to generate a call environment that prevents call contents from being heard by a person other than a person speaking on the phone in a case where call voice is output from a speaker. Speakers installed in an automobile are denoted by SP.sub.1, ..., SP.sub.N, a first filter coefficient used to generate an input signal for a speaker SP.sub.n is denoted by F.sub.n (ω), and a second filter coefficient that is different from the first filter coefficient and is used to generate an input signal for the speaker SP.sub.n is denoted by .sup.~F.sub.n (ω). A call environment generation method includes: an acoustic signal generation step of generating, when detecting a start signal of a call, a call-time acoustic signal that is obtained by adjusting volume of an acoustic signal to be reproduced during the call, by using a predetermined volume value; a first local signal generation step of generating a sound signal S.sub.n as an input signal for the speaker SP.sub.n from a voice signal of the call by using the first filter coefficient F.sub.n (ω); and a second local signal generation step of generating an acoustic signal A.sub.n as an input signal for the speaker SP.sub.n from the call-time acoustic signal by using the second filter coefficient .sup.~F.sub.n (ω).

There is provided an information processing device, an information processing method, and a program that can suppress hindrance to viewing/listening to content. A control unit controls output of a tactile stimulus in a case where notification information is received during output of content including sound. Further, the control unit performs a process of controlling the tactile stimulus in response to the content or a process of controlling the content in response to the tactile stimulus. The present technology can be applied to, for example, a mobile device such as a smartphone and the like capable of reproducing content including sound.