Spotify to suggest songs based on listener's emotions

Spotify has patented technology that will allow it to analyse user's voice and suggest songs based on "emotional state, gender, age, or accent" of the listener, Music Business Worldwide reports. The patent suggests that speech recognition could be used to gather information about age and gender, while contextual cues such as "intonation, stress, rhythm" would provide clues as to whether a user was "happy, angry, sad or neutral". In September, Spotify patented a karaoke-like feature that allows people to "overlay a music track with their own vocals". Earlier this week, Spotify also gained permission for a "cadence-based media content selection engine" - which matches the tempo of the music to the listener's running speed.