190 Chapter 17—Digital Audio I/O
D24—Owner’s Manual

Care must be taken when transferring high-resolution digital audio directly from the

D24’s COAXIAL OUTPUT to a low-resolution device. In the following example, the

20-bit digital audio from the D24 will be truncated by the 16-bit DAT deck, resulting in

distortion and graininess.

If the device receiving the high-resolution signal does not feature digital dither, an

external digital audio processor with digital dither function can be used to truncate the

signal, as shown below.

000000 00
YAMAHAD24
OVER
READY
0
2
6
1012
1420
1830
2042
2660
–dB
OVERABS H
LOCK
TIME DISPLAY
CAPTUREABS/RELREMAIN
VARI
SPEEDUTILITY SETUP
PROJECT
SELECT
LOC MEM
RECALL
LOC MEM
STORE
LOCATEENTERCANCEL
0/-
1
4
7
8
R
7654321
RECORD
READY
SOLO/
SELECT
MONITOR SELECT
PEAK
HOLD AUTO
INPUTALL
INPUT FORMATCHASE
L
2
5
8
3
6
9
UNDO/
REDO
EDIT
JOG ON
JOG/DATASHUTTLE/
CURSOR
PROJECT SEARCH
RTN TO
ZERO
REW FF STOP PLAY REC
ROLL
BACK
LAST REC
SET
DIGITAL MULTITRACK RECORDER
REPEATREHE
PHONES
LEVEL
010
ON
POWER
OFF
PHONES
BA
B
A
AUTO
PUNCH
IN OUT
INT24 48K
MASTER
WC
BIT FS
TC
MSF
READY
0
2
6
12
20
30
42
60
–dB
V. TRACK
SELECT
D24
Recording resolution: 20-bit

The 4 least-significant bits of each sample are

discarded by the DAT, resulting in distortion.

S/PDIF (20-bit)
Digital In
COAXIAL
OUTPUT
Recording resolution: 16-bit
DAT
00.00.00.00
DAT
000000 00
YAMAHAD24
OVER
READY
0
2
6
1012
1420
1830
2042
2660
–dB
OVERABS H
LOCK
TIME DISPLAY
CAPTUREABS/RELREMAIN
VARI
SPEEDUTILITY SETUP
PROJECT
SELECT
LOC MEM
RECALL
LOC MEM
STORE
LOCATEENTERCANCEL
0/-
1
4
7
8
R
7654321
RECORD
READY
SOLO/
SELECT
MONITOR SELECT
PEAK
HOLD AUTO
INPUTALL
INPUT FORMATCHASE
L
2
5
8
3
6
9
UNDO/
REDO
EDIT
JOG ON
JOG/DATASHUTTLE/
CURSOR
PROJECT SEARCH
RTN TO
ZERO
REW FF STOP PLAY REC
ROLL
BACK
LAST REC
SET
DIGITAL MULTITRACK RECORDER
REPEATREHE
PHONES
LEVEL
010
ON
POWER
OFF
PHONES
BA
B
A
AUTO
PUNCH
IN OUT
INT24 48K
MASTER
WC
BIT FS
TC
MSF
READY
0
2
6
12
20
30
42
60
–dB
V. TRACK
SELECT
D24
Recording resolution: 20-bit
S/PDIF (20-bit) S/PDIF (16-bit)
Digital In
COAXIAL
OUTPUT
Recording resolution: 16-bit
DAT
00.00.00.00
DAT

Digital audio processor with digital dither function