The tool which is used to vary the amplification of returning echoes to the transducer is "ultrasound."
What is amplifier?
In electronics, an amplifier is a device which responds to a limited input signal (voltage, current, and power) and produces a larger output signal with the essential waveform features from input signal.
Some key features regarding the amplifier are-
- Different types of amplifiers are widely used in electronic equipment like radio and television recipients, high-fidelity sound equipment, & computers.
- Electro-mechanical devices (such as transformers & generators) as well as vacuum tubes can provide amplifying action, however most electronic systems have used solid-state microcircuits via amplifiers.
- An integrated circuit like this is composed of thousands of transistors & other devices on a single minor silicon chip.
- Typically, a single amplifier is insufficient to raise this same output to a desired level.
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