A sounding device a normal speaker being configured to output a first sound, a bone conduction speaker being configured to output a second sound, a storage unit being configured to store first and second data corresponding to the first and second sounds respectively, and an output control unit being configured to control outputting the first sound from the normal speaker and the second sound from the bone conduction speaker. The first sound is of talking. The second sound is of a pet. The output control unit is configured to control the bone conduction speaker to output the first sound, and to control the normal speaker to output the second sound.

The present disclosure provides glasses. The glasses may include a glasses body including a glasses frame and two glasses temples, wherein the two glasses temples may be physically connected to the glasses frame, respectively; and at least one bone conduction microphone configured to convert a vibration signal into an electric signal, wherein the at least one bone conduction microphone may be physically connected to the glasses frame or at least one glasses temple of the two glasses temples, and the at least one bone conduction microphone may be configured to receive vibration signals from the glasses frame, the at least one glasses temple or a user's body.

The present disclosure provides glasses. The glasses may include a glasses body including a glasses frame and two glasses temples, wherein the two glasses temples may be physically connected to the glasses frame, respectively; and at least one bone conduction microphone configured to convert a vibration signal into an electric signal, wherein the at least one bone conduction microphone may be physically connected to the glasses frame or at least one glasses temple of the two glasses temples, and the at least one bone conduction microphone may be configured to receive vibration signals from the glasses frame, the at least one glasses temple or a user's body.

The invention relates to a transducer apparatus to provide audio sensing with high noise immunity in an acoustically-noisy environment. The invention replaces the prior-art acoustic microphone with a non-acoustic sensor to sense free-field and/or surface vibrations or movement that resemble or arising from the voice of the user. The non-acoustic sensor includes an accelerometer, shock sensor, gyroscope, vibration microphone, or vibration sensor. There are several adaptions and embodiments of the invention including improving the polar directivity of the non-acoustic sensors and application of a multiplicity of non-acoustic sensors and acoustic microphones.

The present disclosure provides a vibration sensor. The vibration sensor may include a vibration receiver and an acoustic transducer. The vibration receiver may include a housing, a limiter and a vibration unit. The housing and the acoustic transducer may form an acoustic cavity. The vibration unit may be located in the acoustic cavity to separate the acoustic cavity into a first acoustic cavity and a second acoustic cavity. The acoustic transducer may be acoustically connected to the first acoustic cavity. The housing may be configured to generate a vibration based on an external vibration signal. The vibration unit may change an acoustic pressure within the first acoustic cavity in response to the vibration of the housing, such that the acoustic transducer generates an electrical signal. The vibration unit may include a mass element and an elastic element. A first side of the elastic element may be connected around a side wall of the mass element. A second side of the elastic element may be connected with the limiter.

The two-way communication system comprises a non-invasive and non-implanted system which allows for clear two-way communications. This system is generally comprised of a mouthpiece component, relay component, infrastructure communication device, an optional earpiece component, and an optional system control which may interface with the relay component.

The two-way communication system comprises a non-invasive and non-implanted system which allows for clear two-way communications. This system is generally comprised of a mouthpiece component, relay component, infrastructure communication device, an optional earpiece component, and an optional system control which may interface with the relay component.

Preprocessing speech signals from an indirect conduction microphone. One exemplary method preprocesses the speech signal in two stages. In stage one, an external speech sample is characterized using an auto regression model, and coefficients from the model are convolved with the internal speech signal from the indirect conduction microphone to produce a pre-conditioned internal speech signal. In stage two, a training sound is received by the indirect conduction microphone and filtered through a low-pass filter. The result is then modeled using auto regression, and inverted to produce an inverted filter model. The pre-conditioned internal speech signal is convolved with the inverted filter model to remove negative or undesirable acoustic characteristics and loss from the speech signal from the indirect conduction microphone.

Preprocessing speech signals from an indirect conduction microphone. One exemplary method preprocesses the speech signal in two stages. In stage one, an external speech sample is characterized using an auto regression model, and coefficients from the model are convolved with the internal speech signal from the indirect conduction microphone to produce a pre-conditioned internal speech signal. In stage two, a training sound is received by the indirect conduction microphone and filtered through a low-pass filter. The result is then modeled using auto regression, and inverted to produce an inverted filter model. The pre-conditioned internal speech signal is convolved with the inverted filter model to remove negative or undesirable acoustic characteristics and loss from the speech signal from the indirect conduction microphone.

The present disclosure is of a bone conduction sound transmission device. The bone conduction sound transmission device comprises a laminated structure and a base structure. The laminated structure is formed by a vibration unit and an acoustic transducer unit. A base structure is configured to load the laminated structure, and at least one side of the laminated structure is physically connected to the base structure. The base structure vibrates based on an external vibration signal, and the vibration unit deforms in response to the vibration of the base structure; and the acoustic transducer unit generates an electrical signal based on the deformation of the vibration unit.