JPEG and air conditioner: what they have in common

1. Step 1. JPEG — uses — Discrete cosine transform. DCT of 8×8 blocks.
2. Step 2. Discrete cosine transform — is used in — MP3. A modified DCT.
3. Step 3. MP3 — is used in — Streaming. Sound compression.
4. Step 4. Streaming — uses — Data centre. Servers.
5. Step 5. Data centre — has part — Air conditioner. Cooling.

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