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Instruction Manual (German)
Uniform quantization
Figure out these questions using the online simulation:
- Calculate and measure the quantization error power!
- Vary the signal amplitude and determine the respective Signal-to-quantization-noise ratios.
- Vary the bit per sample resolution and determine the respective SNRs.
- What probability distribution does the quantization error (usually) have?
- What exceptions can occur to this probability distribution?
Listen to signals using the audio play measure (right click on wire):
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How does music or speech sound for different quantization resolutions? -
How many bit per sample are required to understand the speech demo? -
Can you imagine how this wired quantization error signal will sound?
- Check the sound quality for low signal amplitudes.
External links Wikipedia: Quantization (signal processing)
Click on source symbol  |
Select and adjust input signal  |
Click on Quantizer  |
Vary the bit per sample resolution  |
Right click on wire   |
Open any measure for a signal   |
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8 bit quantized sine with a source amplitude of
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Clipping Error of a sine signal with a source amplitude of . The clipper is set to 1V. |
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Probability density of a speech demo signal (laplace distribution). |
Probability density of the total error. |
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4 bit quantized sine signal. |
Total error of a 4 bit quantized sine signal. |
 Signal-to-quantization-noise ratios of sine and triangle signals. |
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