CXD2719Q Datasheet, PDF (56/58 Pages) Sony Corporation – Single-Chip Dolby Pro Logic Surround Decoder

CXD2719Q
Appendix 2. Compensation Filter
This filter compensates the shoulder characteristics of the digital filters. Fig. 9 shows the frequency response
measured under the following conditions.
• Vin = 300mVrms (sine wave)
• Output level at 1kHz = 0dB
• DC cut filter cut-off = 5kHz
+2
+1
0
–1
–2
–3
–4
–5
–6
–7
–8
–9
–10
10 20
Hosho filter [L-ch]
0dB = 300mVrms (1kHz sin)
50 100 200 500 1k 2k
Frequency [Hz]
5k 10k 20k
Fig. 9. Compensation Filter Frequency Response (Dotted line: Without the compensation filter)
Operation
Turn the filter on and off in each mode except bypass mode using SQA12 of setup register Field A. See "6.
Setup Register".
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