Research Article
Adaptive Variable Degree- Zero-Trees for Re-Encoding of Perceptually Quantized Wavelet Packet Transformed Audio and High-Quality Speech
Table 1
Nineteen critical sub-bands used.
| | Band number | Frequency range (Hz) |
| | 1 | 0–125 | | 2 | 125–250 | | 3 | 250–375 | | 4 | 375–500 | | 5 | 500–625 | | 6 | 625–750 | | 7 | 750–875 | | 8 | 875–1000 | | 9 | 1000–1250 | | 10 | 1250–1500 | | 11 | 1500–1750 | | 12 | 1750–2000 | | 13 | 2000–2250 | | 14 | 2250–(2500)–2750 | | 15 | 2750–(3000)–3125 | | 16 | 3125–(3250–3500)–3750 | | 17 | 3750–(4000)–5000 | | 18 | 5000–(6000)–6500 | | 19 | 6500–(7000)–8000 |
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