![]() ![]() ![]() EFM1 adds Modulation (tone) and volume envelopes, along with a few additional controls. In FM synthesis, waveshapes are produced by two oscillators (Modulator and Carrier), with one Frequency-Modulating the other (that’s what FM stands for), producing often metallic/clangorous overtone structures not possible with traditional analog oscillators-the relative tuning between Modulator and Carrier determines the overtone content and timbre of the sound. The EFM1 is a little more complex than the other E-synths here, but still quite simple for a model based on FM. The rich bell-like tones of FM synthesis were hugely popular when the DX7 first came out, but FM fell out of vogue after a while, probably due to its distinctive but sometimes same-y quality, and the complexity of programming sounds, which was beyond the comfort zone of most synthesists versed in analog designs. The EFM1 is Logic’s attempt to provide a simple design for a complex type of digital synthesis-FM synthesis, as popularized in the '80s primarily by the Yamaha DX7. The EFM1 is a simple Frequency Modulation (FM) synth.
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