Abstract: An electronic device pre-processes a target audio track, including determining, for each time interval of a plurality of time intervals of the target audio track, a multi-pitch salience. The electronic device presents the target audio track at a device associated with the user. While presenting the target audio track at the device associated with the user, the electronic device receives an audio data stream representative of a user's musical performance and scores the user's musical performance with respect to the target audio track by comparing, respectively, for each time interval of the plurality of time intervals of the target audio track, (i) a pitch of the user's musical performance represented by the audio data stream to (ii) the multi-pitch salience.

Abstract: A method is disclosed for providing network access by a network stack in a communication device comprising a plurality of physical communication interfaces, each comprising a data link layer for the exchange of data frames with remote communication devices and a data link layer interface for exchanging data of data frames between the data link layer and higher layers in the network stack; and wherein the method comprises i) providing an abstraction data link layer comprising a single abstracted data link layer interface such that the plurality of physical communication interfaces appear as a single data link layer interface to the higher layers; and ii) obtaining network packets from the higher layers and distributing the network packets over the plurality of physical communication interfaces according to a neutral packet distribution scheme.

Abstract: A method is disclosed for providing network access by a network stack in a communication device comprising a plurality of physical communication interfaces, each comprising a data link layer for the exchange of data frames with remote communication devices and a data link layer interface for exchanging data of data frames between the data link layer and higher layers in the network stack; and wherein the method comprises i) providing an abstraction data link layer comprising a single abstracted data link layer interface such that the plurality of physical communication interfaces appear as a single data link layer interface to the higher layers; and ii) obtaining network packets from the higher layers and distributing the network packets over the plurality of physical communication interfaces according to a neutral packet distribution scheme.

Abstract: A multi-propeller unmanned aerial system (UAS) with a wind-resistant software platform that allows for motor support arm rotation, thereby allowing two propellers to move the drone forward and backward, or rotate it, through thrust vectoring, while the other propellers maintain hover. Horizontal movement is possible without losing the level stability necessary for a number of drone-related functions such as aerial photography. The software platform of the UAS provides for the rotational movement of the motor support arm and motors to engage and disengage to allow for tiltrotor control, specifically two motors rotate to advance the UAS forward or reverse while the remaining propellers maintain hover. Propeller guards are provided for safety which do not affect the maximum thrust or flight maneuverability of the drone.