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Mmmmm: A Multi-modal Mobile Music Mixer

This paper presents Mmmmm; a Multimodal Mobile Music Mixer that provides DJs a new interface for mixing music on the Nokia N900 phones. Mmmmm presents a novel way for DJ to become more interactive with their audience and vise versa. The software developed for the N900 mobile phone utilizes the phones built-in accelerometer sensor and Bluetooth audio streaming capabilities to mix and apply effects to music using hand gestures and have the mixed audio stream to Bluetooth speakers, which allows the DJ to move about the environment and get familiarized with their audience, turning the experience of DJing into an interactive and audience engaging process. Mmmmm is designed so that the DJ can utilize hand gestures and haptic feedback to help them perform the various tasks involved in DJing (mixing, applying eects, and etc). This allows the DJ to focus on the crowd, thus providing the DJ a better intuition of what kind of music or musical mixing style the audience is more likely to enjoy and engage with. Additionally, Mmmmm has an \Ambient Tempo Detection mode in which the phones camera is utilized to detect the amount of movement in the environment and suggest to the DJ the tempo of music that should be played. This mode utilizes frame dierencing