Information processor, information processing system, and information processing method
Provided is an information processor including a signal processing section that acquires a first signal to be detected by an acoustic input section of a first unit including the acoustic input section disposed within a predetermined distance from one ear hole of a user in a state of being worn by the user, acquires a second signal, which indicates a noise generated from a noise source, to be acquired by a second unit, and generates a noise cancellation signal directed to the noise on the basis of the first signal and the second signal.
1. A wearable device, comprising:
a microphone configured to detect a first signal, wherein
the wearable device is wearable on an ear in a wearable state of the wearable device, and
the microphone is at a distance from an ear hole of the ear based on the wearable state of the wearable device;
an acquisition section configured to:
acquire the first signal from the microphone; and
acquire a second signal from a vehicle mounted unit, wherein the second signal indicates a noise from a noise source;
a digital signal processor (DSP) configured to receive first noise cancellation capability information of the vehicle mounted unit from the vehicle mounted unit based on a noise cancellation function of the vehicle mounted unit; and
an operation mode control section configured to select a first operation mode of a plurality of operation modes of the DSP based on the received first noise cancellation capability information, wherein
each operation mode of the plurality of operation modes corresponds to a coordinated operation of the DSP with the vehicle mounted unit,
the coordinated operation of the DSP with the vehicle mounted unit in the first operation mode is different from the coordinated operation of the DSP with the vehicle mounted unit in a second operation mode of the plurality of operation modes,
the coordinated operation of the DSP with the vehicle mounted unit in the first operation mode is based on a frequency band shared between the microphone and the vehicle mounted unit, and
the DSP is further configured to:
transmit second noise cancellation capability information of the wearable device to the vehicle mounted unit based on the noise cancellation function of the vehicle mounted unit, wherein the transmitted second noise cancellation capability information indicates the first operation mode; and
generate a noise cancellation signal, for the noise, based on the acquired first signal, the acquired second signal, and the first operation mode.
2. The wearable device according to claim 1 , further comprising circuitry configured to determine a frequency of the noise based on the acquired second signal.
3. The wearable device according to claim 2 , wherein
the noise is associated with a rotational movement of a moving body of the noise source, and
the second signal comprises information indicating a number of rotations of the rotational movement of the moving body.
4. The wearable device according to claim 3 , wherein
the noise source comprises a power source of a vehicle,
the vehicle mounted unit is on the vehicle,
the vehicle mounted unit wirelessly transmits the second signal, and
the acquisition section is further configured to wirelessly acquire the second signal transmitted by the vehicle mounted unit.
5. The wearable device according to claim 1 , wherein
the operation mode control section is further configured to select the first operation mode based on a quantity of high-frequency components of the noise.
6. The wearable device according to claim 5 , wherein
the wearable device is wearable on the ear of a user,
the noise source comprises a power source of a vehicle, and
the operation mode control section is further configured to select the first operation mode based on an entry of the user in the vehicle.
7. The wearable device according to claim 6 , wherein the operation mode control section is further configured to select the first operation mode based on a number of people in the vehicle.
8. The wearable device according to claim 1 , further comprising:
circuitry configured to generate an output signal based on the noise cancellation signal; and
a first acoustic output section configured to output the output signal.
9. The wearable device according to claim 8 , wherein
the circuitry is further configured to generate a synthesized signal by synthesis of the noise cancellation signal and a specific signal,
the specific signal is generated by application of a signal process on an acoustic signal of a sound source, and
the output signal comprises at least one of the noise cancellation signal or the synthesized signal.
10. The wearable device according to claim 8 , wherein
the acquisition section is further configured to:
acquire the first signal via a first path including a wired communication path; and
acquire the second signal via a second path including a wireless communication path.
11. The wearable device according to claim 10 , wherein
the digital signal processor is further configured to generate the noise cancellation signal for a frequency component of the noise, and
the frequency component of the noise is higher than a first frequency of the noise.
12. The wearable device according to claim 8 , wherein
the acquisition section is further configured to:
acquire the first signal via a third path including a wireless communication path; and
acquire the second signal via a fourth path including a wired communication path, and
the output signal is output by a second acoustic output section of the vehicle mounted unit.
13. The wearable device according to claim 12 , wherein
the digital signal processor is further configured to generate the noise cancellation signal for a frequency component of the noise, and
the frequency component of the noise is lower than a second frequency of the noise.
14. An information processing system, comprising:
a wearable device that includes a microphone, wherein
the wearable device is wearable on an ear in a wearable state of the wearable device,
the microphone is at a distance from an ear hole of the ear based on the wearable state of the wearable device, and
the wearable device is configured to:
detect a first signal by the microphone; and
output the first signal;
a vehicle mounted unit configured to acquire a second signal indicating a noise from a noise source; and
a first unit that comprises:
an acquisition section configured to:
acquire the first signal from the wearable device;
acquire the second signal from the vehicle mounted unit;
a digital signal processor (DSP) configured to receive first noise cancellation capability information of the vehicle mounted unit from the vehicle mounted unit based on a noise cancellation function of the vehicle mounted unit; and
an operation mode control section configured to select a first operation mode of a plurality of operation modes of the DSP based on the received first noise cancellation capability information, wherein
each operation mode of the plurality of operation modes corresponds to a coordinated operation of the DSP with the vehicle mounted unit,
the coordinated operation of the DSP with the vehicle mounted unit in the first operation mode is different from the coordinated operation of the DSP with the vehicle mounted unit in a second operation mode of the plurality of operation modes,
the coordinated operation of the DSP with the vehicle mounted unit in the first operation mode is based on a frequency band shared between the microphone and the vehicle mounted unit, and
the DSP is further configured to:
transmit second noise cancellation capability information of the wearable device to the vehicle mounted unit based on the noise cancellation function of the vehicle mounted unit, wherein the transmitted second noise cancellation capability information indicates the first operation mode; and
generate a noise cancellation signal, for the noise, based on the acquired first signal, the acquired second signal, and the first operation mode.
15. The information processing system according to claim 14 , wherein
the information processing system further comprises a second unit configured to generate a second noise cancellation signal, based on the second signal, for a first frequency component of the noise,
the first frequency component of the noise is lower than a second frequency of the noise,
the first unit is further configured to generate a first noise cancellation signal for a second frequency component of the noise,
the second frequency component is higher than a first frequency of the noise,
the wearable device further includes a first acoustic output section configured to output a first output signal,
the first output signal is based on the first noise cancellation signal,
the vehicle mounted unit includes a second acoustic output section configured to output a second output signal, and
the second output signal is based on the second noise cancellation signal.
16. The information processing system according to claim 14 , wherein
the information processing system further comprises a plurality of active noise canceller (ANC) units,
a first ANC unit of the plurality of ANC units is configured to generate a first noise cancellation signal for a first frequency component of the noise,
the first frequency component is higher than a first frequency of the noise,
a second ANC unit of the plurality of ANC units is configured to generate a third noise cancellation signal for a second frequency component of the noise,
the second frequency component is lower than a second frequency of the noise,
the wearable device further includes a first acoustic output section configured to output a first output signal,
the first output signal is based on the first noise cancellation signal,
the vehicle mounted unit includes a second acoustic output section configured to output a second output signal, and
the second output signal is based on the third noise cancellation signal.
17. An information processing method, comprising:
detecting, by a microphone of a wearable device, a first signal;
acquiring, by an acquisition unit, the first signal from the microphone, wherein
the wearable device is wearable on an ear in a wearable state of the wearable device, and
the microphone is at a distance from an ear hole of the ear based on the wearable state of the wearable device;
acquiring, by the acquisition unit, a second signal from a vehicle mounted unit, wherein the second signal indicates a noise from a noise source;
receiving, by a digital signal processor (DSP), first noise cancellation capability information of the vehicle mounted unit from the vehicle mounted unit based on a noise cancellation function of the vehicle mounted unit;
selecting, by an operation mode control section, a first operation mode of a plurality of operation modes of the DSP based on the received first noise cancellation capability information, wherein
each operation mode of the plurality of operation modes corresponds to a coordinated operation of the DSP with the vehicle mounted unit, and
the coordinated operation of the DSP with the vehicle mounted unit in the first operation mode is different from the coordinated operation of the DSP with the vehicle mounted unit in a second operation mode of the plurality of operation modes, and
the coordinated operation of the DSP with the vehicle mounted unit in the first operation mode is based on a frequency band shared between the microphone and the vehicle mounted unit;
transmitting, by the DSP, second noise cancellation capability information of the wearable device to the vehicle mounted unit based on the noise cancellation function of the vehicle mounted unit, wherein the transmitted second noise cancellation capability information indicates the first operation mode; and
generating, by the DSP, a noise cancellation signal, for the noise, based on the acquired first signal, the acquired second signal, and the first operation mode.
18. A non-transitory computer-readable medium having stored thereon computer-executable instructions which, when executed by a processor, cause the processor to execute operations, the operations comprising:
detecting, by a microphone of a wearable device, a first signal;
acquiring, by an acquisition unit, the first signal from the microphone, wherein
the wearable device is wearable on an ear in a wearable state of the wearable device, and
the microphone is at a distance from an ear hole of the ear based on the wearable state of the wearable device;
acquiring, by the acquisition unit, a second signal from a vehicle mounted unit, wherein the second signal indicates a noise from a noise source;
receiving, by a digital signal processor (DSP), first noise cancellation capability information of the vehicle mounted unit from the vehicle mounted unit based on a noise cancellation function of the vehicle mounted unit;
selecting, by an operation mode control section, a first operation mode of a plurality of operation modes of the DSP based on the received first noise cancellation capability information, wherein
each operation mode of the plurality of operation modes corresponds to a coordinated operation of the DSP with the vehicle mounted unit, and
the coordinated operation of the DSP with the vehicle mounted unit in the first operation mode is different from the coordinated operation of the DSP with the vehicle mounted unit in a second operation mode of the plurality of operation modes, and
the coordinated operation of the DSP with the vehicle mounted unit in the first operation mode is based on a frequency band shared between the microphone and the vehicle mounted unit;
transmitting, by the DSP, second noise cancellation capability information of the wearable device to the vehicle mounted unit based on the noise cancellation function of the vehicle mounted unit, wherein the transmitted second noise cancellation capability information indicates the first operation mode; and
generating, by the DSP, a noise cancellation signal, for the noise, based on the acquired first signal, the acquired second signal, and the first operation mode.