How to Read Your Spectrogram:

🔍 Look at the TOP of the graph (high frequencies):

• High Quality - Bright colors extend all the way to the top (20+ kHz line)

• Medium Quality - Colors suddenly stop around the 16 kHz line (MP3 128kbps)

• Low Quality - Everything goes black above 15 kHz

🎵 Reading the Colors:

• Bright Yellow/White: Loud sounds (vocals, drums, bass)

• Red/Orange: Medium volume sounds

• Dark Red: Quiet sounds

• Black: No sound at that frequency

⚠️ Quality Problems to Spot:

• Sharp Horizontal Line: If colors suddenly stop at a frequency line = compression cutoff

• Too Much Black Space: Between sounds should be dark, but not completely empty

• Missing Sparkle: Cymbals and hi-hats should create bright spots near the top

• Flat Top: Bright horizontal line across the very top = over-compressed/clipped audio

📊 Quick Quality Check:

• Excellent (WAV/FLAC): Bright content reaches 22+ kHz, natural patterns

• Good (320kbps MP3): Content reaches ~20 kHz with slight rolloff

• Poor (128kbps MP3): Hard cutoff at 16 kHz line, missing high frequencies