Sound calibration: Difference between revisions

Revision as of 12:01, 25 April 2025

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In all our labs we use the Cambridge Audio MINX MIN12 speaker. The speaker has

A commercial headset normally have a higher impedance than an audiological headset and therefore a higher sensitivity.

Table: impedances and sensitivity @ 1mW and @ 1V for Headphones measured @ 1 kHz

Model	Impedance (Ohm)	Sens@1mW (dB SPL)	Sens@1V (dB SPL)	Difference (dB)	Audiological
AKG_K271_MKII	55	91	104	12.5	N
SENNHEISER_HD600	300	(92)	97	5.2	N
SENNHEISER_HD100	26	(94)	110	15.8	N
BEYERDYNAMIC_DT_770_PRO	80	96	(107)	11.0	N
SENNHEISER_HDA280	37	(103)	117	14.3	Y
SENNHEISER_HDA300	23	(108)	124	16.4	Y
RADIOEAR_P4492	10	(107)	127	20	Y
TELEPHONICS_TDH-39P	10	(108)	128	20	Y

The numbers are from the specs on the internet.
The numbers between brackets are calculated from the difference between the 1mW and 1V sensitivity by: Sens(1V) = Sens(1mW) + 10*log10(R/1000)

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 ==Introduction==
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+==Sensitivity of speakers==
+In all our labs we use the Cambridge Audio MINX MIN12 speaker. The speaker has
+{| class="wikitable"
+! LAB
+! Distance
+! Sensitivity
+! Calibration
+|-
+| TEST LAB
+|
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+|-
+| AUDITORY PERCEPTION LAB
+|
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+|-
+| AUDITORY SPHERE LAB
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+|
+|
+|
+|-
+| AUDITORY MOTION LAB
+|
+|
+|
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+|-
+| NIRS EEG LAB
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+|
+|
+|-
+|}
 ==Sensitivity of headsets==