Digitized automatic level control transducer-calibrator

A digitized ALC (Automatic Level Control) transducer-calibrator, comprising:

• a digital computing device, selected from a group including a microprocessor, a microcontroller and a digital signal processor, including an A/D (analog to digital) converter, enabled to convert an analog input signal into digital data input to be processed by said computing device, and a D/A (digital to analog) converter, converting digital data output from said computing device into an analog intermediate signal;
• an analog amplifier having a preamplifier stage receiving an analog source signal, an ALC loop stage containing said computing device driven from said preamplifier, and a main analog output amplifier driven by the analog intermediate signal from the ALC loop stage;
• and
• the ALC stage, including a transducer element, being characterized by programing of said computing device with a designated transfer function defined as the analog intermediate signal level as a function of the analog source signal level in conformance with a designated set of ALC performance specifications including an attack time, a release time and with the transfer function relating a level of received input to a resultant attenuation, thus rendering said analog amplifier to become an ALC amplifier with an analog signal path throughout and digitally stabilized ALC performance conforming to the specifications.