sentences:  The FS1R synthesizer has an impressive set of new wave forms over the earlier DX line of FM synthesizers, which have since been incorporated into the new Montage line from Yamaha (with the exception of the Formant wave form).These wave forms include Sine, All1, All2, Odd1, Odd2, Res1, Res2, and Formant.The new wave forms are each constructed with a large number of inherent harmonics making FM synthesis far more efficient.