What we know about the measurement:

Dolby CS 133 is a passive cinema

  • Quality of the measurement data is medium.
  • Origin of the data is Dolby.
  • Format of the data is a set of 36 horizontal and 36 vertical measurements .
  • -3dB (resp. -6db) point v.s. reference is at 61.5Hz (resp. 38.7Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.6dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 10.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.33 and would be 5.03 with a perfect subwoofer.
      • Details: NBD: ON 0.595, LW 0.485, SP 0.401, PIR 0.407; SM: SP0.563, PIR0.023; LFQ 4.446, LFX 61Hz
    • Tonality (Preference) Score is 5.85 with an EQ and would be 7.58 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.447, LW 0.406, SP 0.411, PIR 0.355; SM: SP0.929, PIR0.895; LFQ 4.276, LFX 36Hz
  • Note: data computed from the 2 GLL files, one for the LF speaker and one for the MH speaker. The crossover used is a LR of order 8 and frequency of 365Hz..
Dolby CS 133
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
3 74.0 0.34 2.99
3 765.0 2.98 0.96
3 2406.0 2.97 -2.12
3 3912.0 2.96 -2.6
3 5732.0 2.94 -2.31
3 9001.0 1.7 -3.73
3 14633.0 2.96 -5.02
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Dolby CS 133 filters_auto_eq

AutomaticEQ

Dolby CS 133 filters_eq_full

Target v.s. EQ

Dolby CS 133
Graphic EQ 15 bands
Set preamp gain to: -1.0dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.5
3 100.0 2.14 0.75
3 160.0 2.14 0.5
3 250.0 2.14 0.5
3 400.0 2.14 0.25
3 630.0 2.14 0.25
3 1000.0 2.14 0.0
3 1600.0 2.14 0.0
3 2500.0 2.14 -0.25
3 4000.0 2.14 -0.25
3 6300.0 2.14 -0.25
3 10000.0 2.14 -0.5
3 16000.0 2.14 0.0
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These EQ is designed for a 15 bands graphical EQ.

Dolby CS 133
Graphic EQ 31 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.5
3 63.0 4.32 0.5
3 80.0 4.32 0.75
3 100.0 4.32 0.75
3 125.0 4.32 0.5
3 160.0 4.32 0.5
3 200.0 4.32 0.5
3 250.0 4.32 0.5
3 315.0 4.32 0.5
3 400.0 4.32 0.25
3 500.0 4.32 0.25
3 630.0 4.32 0.25
3 800.0 4.32 0.25
3 1000.0 4.32 0.0
3 1250.0 4.32 0.25
3 1600.0 4.32 0.25
3 2000.0 4.32 0.0
3 2500.0 4.32 -0.25
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.25
3 5000.0 4.32 -0.25
3 6300.0 4.32 -0.25
3 8000.0 4.32 -0.25
3 10000.0 4.32 -0.25
3 12000.0 4.32 -0.25
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Dolby CS 133: comparison between EQs
Dolby CS 133

Comparison betweens various EQs

Dolby CS 133

Improvements made by EQ
CEA2034
On Axis
Early Reflections
Estimated In-Room Response
Horizontal Reflections
Vertical Reflections
SPL Horizontal
SPL Vertical
SPL Horizontal Normalized
SPL Vertical Normalized
SPL Horizontal Contour
SPL Vertical Contour
SPL Horizontal Contour Normalized
SPL Vertical Contour Normalized
SPL Horizontal Contour 3D
SPL Vertical Contour 3D
SPL Horizontal Contour Normalized 3D
SPL Vertical Contour Normalized 3D
SPL Horizontal Radar
SPL Vertical Radar
CEA2034
On Axis
Early Reflections
Estimated In-Room Response
Horizontal Reflections
Vertical Reflections
SPL Horizontal
SPL Vertical
SPL Horizontal Normalized
SPL Vertical Normalized
SPL Horizontal Contour
SPL Vertical Contour
SPL Horizontal Contour Normalized
SPL Vertical Contour Normalized
SPL Horizontal Contour 3D
SPL Vertical Contour 3D
SPL Horizontal Contour Normalized 3D
SPL Vertical Contour Normalized 3D
SPL Horizontal Radar
SPL Vertical Radar
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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