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| ● ES9018検討 |
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ES9018の音切れ対策はDPLLのBWを128倍にすれば(resister#25 b0=>1)にすれば解決するようだ。しかしこれでJITTER抑圧効果があるか否かは不明。
もしESS社が言っている資料抜粋
As well as sample rate conversion the Sabre has a
proprietary jitter reduction circuit that operates with the rate
converter and is able to achieve a 100% jitter rejection. These
two steps: jitter rejection and rate conversion; are able to take
the “burst” mode over-sampled filter output into the precisely
correct clock edge of the high speed clock. Audio data from
all sources is now in the high speed clock domain and sent to
the modulator.
が正しければJITTER抑圧効果はあるはず。
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2011/06/15 AM 09:37:38 |
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