Most generators require a calibration tone (typically 700Hz–1kHz) to set your device's volume to the point where the signal is strong enough to trigger the box without clipping. Where to Find Ready-Made Files
Software-Based Signal GeneratorsFor those using a PC or Mac, software like "E-Stim Commander" or general-purpose DAW (Digital Audio Workstation) plugins are popular. These allow users to generate sine, square, or sawtooth waves. Each wave shape feels different on the skin: sine waves are generally smoother, while square waves feel sharper and more intense. estim audio generator
"Transcutaneous electrical nerve stimulation (TENS) : a review" – Sluka & Walsh (2003) – for physiological effects. "Electrical stimulation of nerves" – Mortimer (2004) – for safety and waveform considerations. Each wave shape feels different on the skin:
: If using a mains-powered unit like the E-Stim Systems 2B, it is critical to use the approved power supply : If using a mains-powered unit like the
Dedicated Audio-to-Stim HardwareHardware like the 2B or ET312 often features an "Audio In" port. These devices act as the generator's physical interface. You plug a 3.5mm auxiliary cable from your phone or PC into the unit, and the device’s internal transformer handles the heavy lifting of turning that low-voltage audio signal into a safe, controlled E-stim output. Safety and Frequency Range