Quiz 1: Digital Audio Signals, Sampling, Filters

Name: _______________________________

Instructions: Check exactly ONE bubble per question

1. How can you quickly estimate the Signal-To-Noise ratio (in dB) from the quantization bit number?

4*number of bits O

6*number of bits O

8*number of bits O

2. ADSR stands for:

Add-Delay-Sample-Resample _________________ O

Amplify-Decompress-Store-Record _______________ O

Attack-Decay-Sustain-Release O

3. If sampled audio is played back twice as fast as the original it sounds

Higher O

Lower O

Longer O

4. Between 10-30 Hertz, what transition happens?

Between continuous and discrete perception O

Between cello and violin range O

Between AM and FM radio O

For the next question consider this filter structure:

8. This is filter deserves the following labels:

IIR, One-pole O

FIR, One-pole O

FIR, One-zero O

9. If I feed many zeros followed by one 1 followed by many zeros, this filter will output:

Many zeros, one 1, many zeros O

Many zeros, two 1s, many zeros O

Many zeros, many 1s O

10. To be stable the following must be true in a z-plot:

All zeros should be inside the unit-circle O

All poles should be inside the unit-circle O

All poles should be outside the unit circle O

Phew, that’s it!