HEADPHONE DEVICE, SIGNAL PROCESSING DEVICE, AND SIGNAL PROCESSING METHOD
First Claim
1. A headphone device comprising:
- sound reproduction means having a diaphragm for performing sound reproduction based on a sound signal;
sound pickup means for performing a sound pickup operation;
filtering means for applying filtering to a picked-up sound signal, which is obtained based on the sound pickup operation by the sound pickup means, to give a noise-cancelling signal characteristic;
combining means for combining the picked-up sound signal that has undergone filtering by the filtering means, and a listening sound signal which is inputted separately as a sound to be listened to by a user, to generate a sound signal supplied to the sound reproduction means; and
abnormality determination means for determining occurrence or non-occurrence of an abnormal sound, based on a result of detecting a level of a sound signal obtained within a sound signal processing system, the sound signal processing system including the filtering means and the combining means and being formed between the sound pickup means and the sound reproduction means.
1 Assignment
0 Petitions
Accused Products
Abstract
A headphone device includes: a sound reproduction unit having a diaphragm which is configured to perform sound reproduction based on a sound signal; a sound pickup unit configured to perform a sound pickup operation; a filtering unit configured to apply filtering to a picked-up sound signal obtained by the sound pickup unit, to give a noise-cancelling signal characteristic; a combining unit configured to combine the picked-up sound signal that has undergone filtering, and a listening sound signal which is inputted separately, to generate a sound signal supplied to the sound reproduction unit; and an abnormality determination unit configured to determine occurrence or non-occurrence of an abnormal sound, on the basis of a result of level detection of a sound signal obtained within a sound signal processing system that includes the filtering unit and the combining unit and is formed between the sound pickup unit and the sound reproduction unit.
110 Citations
18 Claims
-
1. A headphone device comprising:
-
sound reproduction means having a diaphragm for performing sound reproduction based on a sound signal; sound pickup means for performing a sound pickup operation; filtering means for applying filtering to a picked-up sound signal, which is obtained based on the sound pickup operation by the sound pickup means, to give a noise-cancelling signal characteristic; combining means for combining the picked-up sound signal that has undergone filtering by the filtering means, and a listening sound signal which is inputted separately as a sound to be listened to by a user, to generate a sound signal supplied to the sound reproduction means; and abnormality determination means for determining occurrence or non-occurrence of an abnormal sound, based on a result of detecting a level of a sound signal obtained within a sound signal processing system, the sound signal processing system including the filtering means and the combining means and being formed between the sound pickup means and the sound reproduction means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A signal processing device comprising:
-
filtering means for applying filtering to a picked-up sound signal to give a noise-cancelling signal characteristic, in a headphone device including sound reproduction means having a diaphragm for performing sound reproduction based on a sound signal, and sound pickup means for performing a sound pickup operation, the picked-up sound signal being obtained based on the sound pickup operation by the sound pickup means; combining means for combining the picked-up sound signal that has undergone filtering by the filtering means, and a listening sound signal which is inputted separately as a sound to be listened to by a user, to generate a sound signal supplied to the sound reproduction means of the headphone device; and abnormality determination means for determining occurrence or non-occurrence of an abnormal sound, based on a result of detecting a level of a sound signal obtained within a sound signal processing system, the sound signal processing system including the filtering means and the combining means and being formed between the sound pickup means and the sound reproduction means. - View Dependent Claims (15)
-
-
16. A signal processing method for a noise cancelling system, the noise cancelling system including:
-
filtering means for applying filtering to a picked-up sound signal to give a noise-cancelling signal characteristic, in a headphone device including sound reproduction means having a diaphragm for performing sound reproduction based on a sound signal, and sound pickup means for performing a sound pickup operation, the picked-up sound signal being obtained based on the sound pickup operation by the sound pickup means; and combining means for combining the picked-up sound signal that has undergone filtering by the filtering means, and a listening sound signal which is inputted separately as a sound to be listened to by a user, to generate a sound signal supplied to the sound reproduction means, the signal processing method comprising determining occurrence or non-occurrence of an abnormal sound based on a result of detecting a level of a sound signal obtained within a sound signal processing system, the sound signal processing system including the filtering means and the combining means and being formed between the sound pickup means and the sound reproduction means.
-
-
17. A headphone device comprising:
-
a sound reproduction unit having a diaphragm which is configured to perform sound reproduction based on a sound signal; a sound pickup unit configured to perform a sound pickup operation; a filtering unit configured to apply filtering to a picked-up sound signal, which is obtained based on the sound pickup operation by the sound pickup unit, to give a noise-cancelling signal characteristic; a combining unit configured to combine the picked-up sound signal that has undergone filtering by the filtering unit and a listening sound signal which is inputted separately as a sound to be listened to by a user, to generate a sound signal supplied to the sound reproduction unit; and an abnormality determination unit configured to determine occurrence or non-occurrence of an abnormal sound, based on a result of detecting a level of a sound signal obtained within a sound signal processing system, the sound signal processing system including the filtering unit and the combining unit and being formed between the sound pickup unit and the sound reproduction unit.
-
-
18. A signal processing device comprising:
-
a filtering unit configured to apply filtering to a picked-up sound signal to give a noise-cancelling signal characteristic, in a headphone device including a sound reproduction unit having a diaphragm which is configured to perform sound reproduction based on a sound signal, and a sound pickup unit configured to perform a sound pickup operation, the picked-up sound signal being obtained based on the sound pickup operation by the sound pickup unit; a combining unit configured to combine the picked-up sound signal that has undergone filtering by the filtering unit, and a listening sound signal which is inputted separately as a sound to be listened to by a user, to generate a sound signal supplied to the sound reproduction unit of the headphone device; and an abnormality determination unit configured to determine occurrence or non-occurrence of an abnormal sound, based on a result of detecting a level of a sound signal obtained within a sound signal processing system, the sound signal processing system including the filtering unit and the combining unit and being formed between the sound pickup unit and the sound reproduction unit.
-
Specification