CHM 411 Chapter 5

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CHM 411Chapter 5

• Spring 2011
• Suroviec

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Signal to Noise ratio

• Measuring S/N

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Sources of Noise

• Noise categories
• 1. Random vs. Non-random

• 2. Fundamental vs. nonfundamental

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B. Types of Noise

1. White noise
2. Flicker noise
3. Environmental noise

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Signal to Noise Enhancement

• Hardware methods
• 1. Grounding and shielding

• 2. Analog filters

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Signal to Noise Enhancement

• B. Software Methods

• Mean square noise

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Signal to Noise Enhancement

• Rms noise

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Signal to Noise Enhancement

• 2. Boxcar Average

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Signal to Noise Enhancement

• 3. Digital Filtering