User Manual

Multichannel Monitoring Tutorial Booklet (M2TB) rev. 3.5.2

Masataka Nakahara : SONA Corporation

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When the headroom is 20 dB

Reference signal Reference signal level Peak meter VU meter

1kHz Digital -20dBp-p (-23dBrms) -20dBFS 0dB

Analog (-17dBp-p) -20dBrms

Pink noise (DC)–20kHz - -20dBrms (-14dBFS) 0–1.5dB

[Table 4-1] The level relationship between 1 kHz and pink noise:

when referenced to -20 dB

When the headroom is 18 dB

Reference signal Reference signal level Peak meter VU meter

1kHz Digital -18dBp-p (-21dBrms) -18dBFS 0dB

Analog (-15dBp-p) -18dBrms

Pink noise (DC) –20kHz - -18dBrms (-12dBFS) 0–1.5dB

[Table 4-2] The level relationship between 1 kHz and pink noise:

when referenced to -18 dB

When the main channel playback level is referenced to 85 dBC

Headroom setting of the

studio

Signal used for adjustment Speaker playback level

-20dB (=0VU) -20dBrms pink noise 85dBC

-18dB (=0VU) -18dBrms pink noise 85dBC

-20 dBrms pink noise 82dBC

[Table 5] The relation between pink noise used for adjustment

and the target playback level

The Yamaha DM2000, DM1000, and 02R96 digital consoles contain built-in -20 dBrms pink noise for

purposes of monitor adjustment. The pink noise playback bandwidth is cut at an upper limit of 20 kHz

so that the power level of the pink noise does not change regardless of the sampling frequency mode.

6-2. Main channel level balance

Play back the above pink noise from the main speakers, and adjust the gain of each amp so that the sound

pressure level of each speaker is 85 dBC at the listening point.

The sound pressure level (85 dBC) at the listening point is measured using a sound level meter (“slow”

response, “C-weighted” frequency curve).

The sound pressure level indicated by the SPL meter is the “all-pass level” that is the sum of the levels of

all bands.

If the all-pass level is 85 dBC, the band level of each band displayed in the RTA (the 1/3 octave band

level) will be approximately 71 dB.