10
Section 3
386
Dither Switch
This switch is used to select the dither type algorithms including: TPDF, SNR
2
, or None. Dither is
random noise that is added to the audio signal which effectively eliminates the harmonic distor-
tion created by truncation. See the“Truncation” graph in section D.2 of the Appendix. The LED
will be lit RED for the SNR
2
or GREEN for the TPDF dither algorithm. When the LED is off, dither-
ing is not in use.
Shape Switch
This switch selects the Shape 1, or Shape 2 psycho-acoustic noise-shaping curve. Shape 1 uti-
lizes a mild psycho-acoustic curve, while the curve used in Shape 2 tends to be more aggres-
sive. Please see the "Noise Shaping" graph in section D.1 of the appendix. The LED will be lit
GREEN for Shape 1 and RED for Shape 2. When the LED is off, the noise-shaping algorithm is
not in use.
Sample Rate Switch
This switch selects the digital output sample rate of either: 44.1, 48, 88.2, or 96 kHz. The LED
will not be lit for 44.1 kHz, GREEN for 48 kHz, RED for 88.2 kHz and YELLOW for 96 kHz.
Word Length Switch
Selects output wordlength of 16, 20, or 24 bits output resolution. The LED will not be lit for 16
bit, GREEN for 20 bit, and RED for 24 bit.
Output Format
Selects either the AES/EBU or S/PDIF digital output format. The LED will be red for AES/EBU
and green for S/PDIF.
3.2 Digital Output Rear Panel Connections
3.1 Digital Output Front Functions of the 386
386 User Manual
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