8126812
Amplifying Audio
- Block Diagram
- Signal Source
- Outputs audio signal
- AC signal
- Frequency between 20Hz and 20kHz
- Amplitude usually a few millivolts
- AC signal
- Outputs audio signal
- Pre-Amplifier
- Boosts the amplitude
- Boosts to levels well above noise level other blocks may add to
- Boosts to levels well above noise level other blocks may add to
- Boosts the amplitude
- Tone Control
- Adjusts the frequency balance of the signal
- Boosts some ranges and cuts others
- Compensates for imperfect transfer characteristics of the microphone, loudspeaker and human ear
- Boosts some ranges and cuts others
- Adjusts the frequency balance of the signal
- Volume Control
- Varible component that passes a fraction of the current
- Fraction can be between all the signal of nothing at all
- Passes the signal from the tone control to the voltage amplifier
- Fraction can be between all the signal of nothing at all
- Varible component that passes a fraction of the current
- Voltage Amplifier
- Power Amplifier
- Loudspeaker
- Signal Source
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