7.7K views · 192 reactions | THE Professional Way to Soften Skin for High-End Retouching in Photoshop using the Amazing technique of Frequency Separation. Learn how to use the "mixer brush" to perform Frequency Separation for fantastically finer results with much ease. In this tutorial, we are going to break down the concept into small and easy chunks and start right from the beginning. | PiXimperfect | Facebook

102K views · 2.1K reactions | How to use a digital mixer for the first time | Mystrokeyz | Facebook

This simulation is of a Diode Mixer, commonly used in RF and communication systems for frequency conversion. It combines two input signals—an 8 MHz local oscillator (LO) and a 7 MHz radio frequency (RF) signal—using nonlinear components (diodes) to produce sum and difference frequencies (e.g., 1 MHz and 15 MHz). The waveform section shows the individual inputs and the mixed output, which contains these new frequency components. Such mixers are essential in superheterodyne receivers for downconve