Цитата:от: mavani
Это что?)
Это видимо нужно для людей снимающих видео со звуком для более корректной его настройки. Тут вот есть объяснение, правда на иноземном
"Tone Generator
Portable field mixers often include a tone generator (also referred to as oscillators or
slates ) . Their main function is to allow you to set the input level of the video camera or recording device with the output level of the mixer. The basic idea is to go through the menus on the video camera and find the camera's audio meters. With the mixer plugged into the camera's audio inputs, turn on the mixer's tone generator and adjust the audio levels on the camera so the signal is strong but not going into the red.
The tone generator often comes in the form of a switch. The switch will often have three positions: Off, Locked On, and Momentary On. You lock the tone on when you are calibrating the output level of the mixer with the input level on the camera or recording device. The slate tone is also used as a marker between takes, so you would use the momentary setting to create short pulses of tone. You can often hear these tone pulses on blooper reels of onscreen talent flubbing their lines. These pulses are used as markers in post production. The pulse creates a square block in the digital audio waveform of the audio you're recording. In post production, these blocks are easy to see, and help editors manage the footage. Some mixers even feature a built-in microphone with the slate. This way you can trigger a pulse to then audibly say into the microphone "Scene one, take two… "
P.S. Судя по всему по русски это звучит как Генератор Тона