Good speech processing can make a dramatic difference to how a low-power SSB signal sounds on air. In homebrew and QRP SSB transceivers, transmitter audio is often clean but lacks average power, making signals sound weak during normal conversation. The compact Simple Speech Processor circuit shown here addresses that exact problem by increasing average talk power while preserving intelligibility and keeping distortion under control.
This design, originally shared and discussed on the Small Wonder QRP blog, has become popular among home constructors because it is simple, effective, and well suited for integration into BITX-style and other minimalist SSB rigs.
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