Which stage of demodulation involves converting the received waveform into a form suitable for processing and is not user controlled?

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Multiple Choice

Which stage of demodulation involves converting the received waveform into a form suitable for processing and is not user controlled?

Explanation:
Demodulation is the stage where the received high-frequency ultrasound echoes are converted into a form that the system can process, typically the envelope or baseband signal. This conversion happens automatically inside the receiver and is not something the operator adjusts, unlike controls such as time-gain compensation or overall amplification, which modify the signal after demodulation. Within demodulation, rectification and enveloping are common methods to extract the signal’s amplitude, but they are part of the demodulation process rather than the broader stage itself.

Demodulation is the stage where the received high-frequency ultrasound echoes are converted into a form that the system can process, typically the envelope or baseband signal. This conversion happens automatically inside the receiver and is not something the operator adjusts, unlike controls such as time-gain compensation or overall amplification, which modify the signal after demodulation. Within demodulation, rectification and enveloping are common methods to extract the signal’s amplitude, but they are part of the demodulation process rather than the broader stage itself.

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