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Distortion meter 
Summary
A distortion meter is a type of electronic test equipment used to determine specific frequencies that cause distortion in electronic devices. The device is primarily used in audio related equipment.
Features and uses edit
A typical unit injects a signal in to the input of a circuit and monitors the output of the circuit for distortion.
Types of distortion edit
- Amplitude distortion.
- Frequency distortion.
- Phase distortion.
- Intermodulation distortion.
- Cross over distortion.
See also edit