Patent ID: 8350141

Claim:
A musical instrument tuner for string instruments comprising a signal classifier for determining a signal class of an input signal from a group of classes at least comprising one or more monophonic signal classes and one or more polyphonic signal classes, a signal analyzer for determining at least one representation of a pitch frequency of said input signal, and an indicator for displaying an output established on the basis of said signal class and said at least one representation of a pitch frequency, said indicator being arranged to enable two or more display modes at least comprising one or more monophonic display modes comprising a deviation representation being a representation of a deviation from a target pitch frequency, wherein the target pitch frequency corresponds to a semitone closest to the determined pitch frequency, and one or more polyphonic display modes comprising several deviation representations, each deviation representation being a representation of a deviation from a target pitch frequency, wherein the target pitch frequency corresponds to a target pitch frequency of a string of the string instrument and at least two of the several deviation representations relate to different strings of the string instrument; wherein said indicator is arranged to display said at least one representation of a pitch frequency according to a current display mode selected from said two or more display modes in dependency of said signal class determined by said signal classifier.