Hi Eric,
and thanks for the clarification. To help me understand this stuff
better, maybe you could indicate what a good ratio between self-noise
and sensitivity would be? It would seem like the difference between a
25 mV/Pa mic and a 12 Mv/Pa mic would be pretty great. What kind of
sensitivity are people looking at when they talk about a "high gain +
low noise" microphone?
d.
Eric Benjamin wrote:
> Derek,
>
> The second sensitivity rating for the MKH 30 is the
> sensitivity with the 10 dB attenuator engaged. -10 dB
> is 0.316, and 8 mV/Pa divided by 25 mV/Pa is 0.32.
>
> If you are not accustomed to reading microphone specs,
> Pa is an abbreviation for the unit of one Pascal,
> which is equivalent to a Sound Pressure Level of 94
> dB. 94 dB SPL is a loud but not painful level, and
> thus makes a convenient reference level. As a guide,
> normal conversational speech is about 60 dB SPL.
>
> Eric
>
> --- derek holzer <> wrote:
>
>> How do you read this stuff? For example, the
>> Sennheiser MKH 30 has two
>> ratings side by side:
>>
>> 25mV/Pa (8mV/Pa +-1dB)
>>
>> Which number would represent the effective
>> sensitivity which I could
>> compare with another mic, say the MBHO KA 100 LK
>> capsule, which rates:
>>
>> 12 mV/Pa
>>
>> on the spec sheet?
>>
>> Does this mean that MKH mic is more than twice as
>> sensitive as the MBHO,
>> or that the MBHO is about one and a half times as
>> sensitive as the MKH?
>>
>> Are there other factors in the spec sheets that I
>> would have to take
>> into account to get a good comparison between
>> different mic
>> sensitivities and self-noise?
>>
>> thx + best,
>> d.
--
derek holzer ::: http://www.umatic.nl
---Oblique Strategy # 119:
"Mechanicalize something idiosyncratic"
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