An automobile headrest safe is disclosed which is used in conjunction with the seat of the automobile. The headrest safe includes an exterior housing with a front surface, a rear surface, a left side surface, a right side surface, a top surface, and a bottom surface. The exterior housing includes a pivoting door. The headrest safe also includes a hollow metal container positioned within the interior of the exterior housing. The container has a main portion and a spring biased exterior housing door. The container also has a reciprocating gun tray. The exterior housing door has a biometric lock.

A first seat noise control device corrects sound collected by a microphone to sound at a listening position of a user seated on a first seat, generates a cancel sound that cancels, at the first seat, the sound of a second seat audio source output from a second seat speaker by using an adaptive filter, and outputs the cancel sound from a first seat speaker. A second seat noise control device corrects the sound collected by the microphone to sound at the listening position of the user seated on the second seat, generates a cancel sound that cancels, at the second seat, the sound of a first seat audio source output from the first seat speaker using an adaptive filter, and outputs the cancel sound from the second seat speaker.

A first seat noise control device corrects sound collected by a microphone to sound at a listening position of a user seated on a first seat, generates a cancel sound that cancels, at the first seat, the sound of a second seat audio source output from a second seat speaker by using an adaptive filter, and outputs the cancel sound from a first seat speaker. A second seat noise control device corrects the sound collected by the microphone to sound at the listening position of the user seated on the second seat, generates a cancel sound that cancels, at the second seat, the sound of a first seat audio source output from the first seat speaker using an adaptive filter, and outputs the cancel sound from the second seat speaker.

An accessory support assembly for a vehicle seat includes a support frame that includes an upper bracket and a lower bracket coupled to a bottom of the upper bracket. The lower bracket includes coupling features. The lower bracket defines side projections that extend from opposing sides of the support frame. A speaker assembly is coupled to the support frame. The speaker assembly includes a first speaker housing and a second speaker housing. The first and second speaker housings are coupled to the side projections of the support frame, respectively. A speaker is disposed in each of the first and second housings.

The technology described in this document can be embodied in a vehicle seat that includes a seat headrest portion for supporting the head of an occupant, and a seat backrest portion for supporting the back of the occupant in a seated position. The backrest portion includes an enclosure for receiving at least a portion of an acoustic transducer. The vehicle seat also includes an acoustic channel having a first end that is configured to be fitted around a driver of the acoustic transducer in an acoustically sealed configuration, and a second end. The second end is opposite the first end and disposed at a location closer to the seat headrest portion than the seat backrest portion. The acoustic channel is configured to radiate acoustic energy from the acoustic transducer through the second end.

The technology described in this document can be embodied in a vehicle seat that includes a seat headrest portion for supporting the head of an occupant, and a seat backrest portion for supporting the back of the occupant in a seated position. The backrest portion includes an enclosure for receiving at least a portion of an acoustic transducer. The vehicle seat also includes an acoustic channel having a first end that is configured to be fitted around a driver of the acoustic transducer in an acoustically sealed configuration, and a second end. The second end is opposite the first end and disposed at a location closer to the seat headrest portion than the seat backrest portion. The acoustic channel is configured to radiate acoustic energy from the acoustic transducer through the second end.

The movement inducing device includes a plurality of air bags, each being provided with a contacting portion configured to contact with a user and induce a movement of an intended skeletal muscle of the user; a drive mechanism configured to expand and compress the air bags by adjusting supply and discharge of air to and from each air bag and a control unit provided with a drive control unit configured to control driving of the drive mechanism to make the intended skeletal muscle of the user perform at least one of an isotonic muscle activity, an isometric muscle activity and an isokinetic muscle activity.

The movement inducing device includes a plurality of air bags, each being provided with a contacting portion configured to contact with a user and induce a movement of an intended skeletal muscle of the user; a drive mechanism configured to expand and compress the air bags by adjusting supply and discharge of air to and from each air bag and a control unit provided with a drive control unit configured to control driving of the drive mechanism to make the intended skeletal muscle of the user perform at least one of an isotonic muscle activity, an isometric muscle activity and an isokinetic muscle activity.

Various implementations include vehicle headrest configurations and related audio systems. In some cases, a headrest includes: a main body having a front surface to support a back of a user's head and a pair of acoustic channels each formed in part by a side wall having a front edge that is offset from the front surface, the main body having a portion configured to receive first and second transducers having a center-to-center spacing of approximately 130 millimeters (mm) to approximately 240 mm, where a dimension (Dimension K) is defined by a distance between respective inside surfaces of side walls of the pair of acoustic channels, a dimension (Dimension F) is defined by an amount that the front edge of each side wall is recessed from the front surface and, the first and second transducers are oriented at an outward firing angle relative to the centerline of the vehicle headrest.

Various implementations include vehicle headrest configurations and related audio systems. In some cases, a headrest includes: a main body having a front surface to support a back of a user's head and a pair of acoustic channels each formed in part by a side wall having a front edge that is offset from the front surface, the main body having a portion configured to receive first and second transducers having a center-to-center spacing of approximately 130 millimeters (mm) to approximately 240 mm, where a dimension (Dimension K) is defined by a distance between respective inside surfaces of side walls of the pair of acoustic channels, a dimension (Dimension F) is defined by an amount that the front edge of each side wall is recessed from the front surface and, the first and second transducers are oriented at an outward firing angle relative to the centerline of the vehicle headrest.