Special purpose sine-wave sources are easily obtained using digital counting-decoder-filter methods with second-harmonic distortion less than 1%. Good frequency stability and reasonable variety in choice of output frequency results when the input clock signal is derived from a crystal oscillator through programmable divider chains. The resulting sine wave output would be suitable for applications such as the 90- and 150-Hz modulation frequencies of ILS transmitters, as well as other limited-range audio-frequency use.
(See document for exact affiliation information.)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
