Audio Signal Chain
Description
This MicroSim visualizes the complete audio signal chain: Microphone → Preamplifier → Tone Control → Power Amplifier → Speaker.
Level meters below each stage show signal levels in dBV across three frequency bands:
- Blue bars: Bass (100 Hz)
- Green bars: Midrange (1 kHz)
- Orange bars: Treble (10 kHz)
Red clipping indicators appear when a stage exceeds +10 dBV.
Controls:
| Control | Range | Effect |
|---|---|---|
| Mic level | −70 to −30 dBV | Simulates microphone sensitivity |
| Preamp gain | +20 to +60 dB | Brings mic level up to line level |
| Bass adjust | ±12 dB | Tone control affecting low frequencies |
| Treble adjust | ±12 dB | Tone control affecting high frequencies |
| Volume | −30 to 0 dB | Power amplifier output level |
Signal level references:
| Level | dBV | Typical use |
|---|---|---|
| Mic output | −60 to −40 dBV | Dynamic microphone |
| Consumer line | −10 dBV | Home audio equipment |
| Pro line | +4 dBV (~0 dBu) | Studio equipment |
| Clip point | +10 dBV | Distortion above this level |