Alto-professional ACOM2 Manual de usuario descargar pdf (Pagina 4)

Limiter

21. Threshold control - Controls the level of the Limiter.

22. Limiter LED - Lights up when the Limiter function is activated.

REAR PANEL CONTROLS

23. Power connector - Connect the included power cable here.

24. Audio in - Balanced 1/4” TRS jack and XLR input connectors.

25. Audio out - Balanced 1/4” TRS jack and XLR output connectors.

26. Operating level control - Sets the operating level to either -10 dBV or +4 dBu.

27. Sidechain send - 1/4" unbalanced jack to route audio to an external processor.

28. Sidechain return - 1/4" jack processes the return signal sent from an external processor.

COMPRESSOR CONCEPTS

Digital audio equipment usually has a very high dynamic range: up to 125 dB. However, the dynamic range

of analog equipment is about 25 dB less. Using tapes and vinyl records further reduces the dynamic range.

SIGNAL-TO-NOISE RATIO

All electronic equipment produces some noise when current flows through its conductor. The noise is further

amplified when it occurs across the whole spectrum of audio. Even "low-noise" components still have some

residual noise. For example, most tape recorders have a signal-to-noise ratio (SNR) of 70 dB or less, a level

that most of today's listeners would recognize as low-quality.

DYNAMICS

The chart below shows the dynamic ranges of various devices compared to the human ear.

Ear Microphone Power Tape Radio Cassette

Pream

lifier Recorde

Recorde

1 2 3 4 5 6 7 8 9 ... 59 60

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Alto-professional ACOM2 Manual de usuario Pagina 4