oops, I keep typing Symbols instead of Samples /* Slow Data + Voice Bits + Sync Bits = 747 Bits = 5976 Samples */ /* Full Data + Sync Bits = 747 Bits = 5976 Samples */
Without the bit-stuffing the spectrum cleaned up and it actually sounds more random, but this is just a function of your test program, as long runs of 1's would make a mess without scrambling. I think most FM direct modulators have a filter for below 100 Hz. [image: spectrum.png]
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