User Manual

Multichannel Monitoring Tutorial Booklet (M2TB) rev. 3.5.2
Masataka Nakahara : SONA Corporation
©2005 YAMAHA Corporation, ©2005 SONA Corporation
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2-4. Playback response
By “playback response” we mean the desired (recommended) response of the playback system that plays
back the media. For example, this corresponds to the frequency response of each speaker and the level
balance.
It is important to be aware that depending on the media and the channel format, playback response may
not be the same as the recording response.
The following pages describe playback response for typical media.
2-4-1. DVD-Video: Dolby, DTS
[Fig. 10] Playback specification for DVD-Video program
In DVD-Video (Dolby, DTS), the playback level of the LFE channel (20–120 Hz) is set so that it will be
+10 dB relative to the level of the main channel bands. In the case of 3-1, LS and RS are set
approximately 3 dB lower so that the playback levels of L, C, R, and S (LS+RS) will be the same.
[Front channel]
Level
L = C = R (= 85 dBC)
Match the playback level of all channels.
Playback bandwidth
Full-range
[Surround channels]
Level
3-1: S (LS+RS) = L/C/R (=85dBC)
Set the LS and RS playback levels lower than for 5.1 (LS = RS ≈ 82 dBC)
5.1: LS = RS = L/C/R (= 85 dBC)
6.1: LS = RS = BS = L/C/R (= 85 dBC)
50
60
70
80
90
AP(C)
20
31.5
50 80
125 200
315 500
800
1.25k
2k
3.15k
5k 8k
12.5k
20k
1/3 octave band center frequency [Hz]
SPL [dB]
20 – 120Hz
+10dB
LFE : approx. 89dBC
L=C=R=LS=RS : 85dBC
LS=RS=-3dB : 82dBC
All-pass level
LFE
LFE : approx. 81dB
L=C=R=LS=RS : approx. 71dB
LS=RS=-3dB : approx. 68dB
1/3 octave band level
L=C=R, LS=RS=BS (5.1ch, 6.1ch)
Wide-band Pink Noise
approx. 0VU
(-20dBrms)
Input Signal
LS=RS (3-1ch)