EECS 1520 FINAL EXAM QUESTIONS
WITH 100% CORRECT ANSWERS |
LATEST VERSION 2025/2026.
Amplitude - ANS Related to intensity
Frequency - ANS Related to pitch
Nyquist Shannon sample interval and sampling frequency - ANS Sample interval ≤ half period
Sampling ≥ 2x max frequency
Bit depth formula - ANS Bit depth= bit rate/ sampling frequency
Bit rate formula - ANS Bit rate = sampling frequency x bit depth x # of channels
Human Hearing Range - ANS 16 Hz- 20 kHz
What does lossy audio do? - ANS 1. Removes imperceptible sounds using psychoacoustic
models
2. Reduces bit rate (less accurate reproduction of original)
1 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Audio codecs - ANS Lossless: FLAC
Lossy: MP3 and AAC
Vector graphics advantage and disadvantage - ANS Advantage: Can be enlarged without loss
of detail or change in file size. NO PIXELATION
Disadvantage: Cant get very complex
Raster Graphics advantage and disadvantage - ANS Advantage: Can create complex images
Disadvantage: Suffers for pixelation when enlarged
Image Formats - ANS Lossless: GIF and PNG
Lossy: JPEG
Video Compression Techniques - ANS Spatial: Intra- frame (uses info from same frame to
reduce file size)
Temporal: Inter-frame (uses data from nearby frames to reduce file size)
- Key frames ( I-frames)
- P frames (Predictive)
- B frames (Bidirectional)
CBR be VBR - ANS Constant bitrate: same but rate throughout video
Variable bit rate: Allows higher but rates during fast motion scenes and lower bit rates when
there is little motion
2 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
WITH 100% CORRECT ANSWERS |
LATEST VERSION 2025/2026.
Amplitude - ANS Related to intensity
Frequency - ANS Related to pitch
Nyquist Shannon sample interval and sampling frequency - ANS Sample interval ≤ half period
Sampling ≥ 2x max frequency
Bit depth formula - ANS Bit depth= bit rate/ sampling frequency
Bit rate formula - ANS Bit rate = sampling frequency x bit depth x # of channels
Human Hearing Range - ANS 16 Hz- 20 kHz
What does lossy audio do? - ANS 1. Removes imperceptible sounds using psychoacoustic
models
2. Reduces bit rate (less accurate reproduction of original)
1 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Audio codecs - ANS Lossless: FLAC
Lossy: MP3 and AAC
Vector graphics advantage and disadvantage - ANS Advantage: Can be enlarged without loss
of detail or change in file size. NO PIXELATION
Disadvantage: Cant get very complex
Raster Graphics advantage and disadvantage - ANS Advantage: Can create complex images
Disadvantage: Suffers for pixelation when enlarged
Image Formats - ANS Lossless: GIF and PNG
Lossy: JPEG
Video Compression Techniques - ANS Spatial: Intra- frame (uses info from same frame to
reduce file size)
Temporal: Inter-frame (uses data from nearby frames to reduce file size)
- Key frames ( I-frames)
- P frames (Predictive)
- B frames (Bidirectional)
CBR be VBR - ANS Constant bitrate: same but rate throughout video
Variable bit rate: Allows higher but rates during fast motion scenes and lower bit rates when
there is little motion
2 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
