Marantz SA-11S1 SA-11S1 User Manual - Page 20
audio CD, CD layer of Super Audio CD, and high sound quality stereo area - dac
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ENGLISH OPERATION 7 audio CD, CD layer of Super Audio CD, and high sound quality stereo area Filter operations The filter settings can be made while the track is stopped. The filters shown in the table below are available for providing distinctive filtering according to the operation and Audio CD or Super Audio CD. Each time the FILTER button is pressed, the filter types cycle from FIL1 → FIL2 → FIL3 → FIL1. The filter setting has a memory retention function so that the setting remains stored and unchanged even when the disc is changed or the power is turned off. Filter Selection Table Filter type Audio CD Super Audio CD FILTER 1 FILTER 2 FILTER 3 This is an original filter using short FIR with asymmetric preecho and postecho in the impulse response. The analog characteristics exhibit slow roll-off. This creates a sound venue with richness, smoothness, and depth consistent with the image of analog record performances. This is a direct mode that does not perform any filtering on the DSD data. The original source data is reproduced without any alteration. This is a filter without preecho or postecho in the impulse response. It is a special short coefficient FIR filter which gives priority to fs (original sample data). With analog characteristics, it acts as a slow roll-off filter to improve sound quality by faithfully reproducing music signals from deep bass to midrange. This filter attenuates sections of the DSD data that exceed 100kHz. In the DAC, operation is also asymmetric for giving priority to DAC resolution and raising the multilevel performance to approximately 40 levels. This is a long coefficient FIR filter with symmetric preecho and postecho in the impulse response. With analog characteristics, it acts as a standard sharp roll-off filter. It copies the SAA7220PB coefficient of 4fs operation that Marantz adopted in the past with the CD-94, CD-95, CD-95SE and others as a referential digital filter for audio CD, but then boosts operation 8-fold. This filter attenuates sections of the DSD data that exceed 100kHz. In the DAC, it provides fully symmetric operation for 23 levels. Note: When playing back the high sound quality stereo area in Super Audio CDs, the analog output level varies slightly in each filter. 15