Audio specs

07/10/2009 - 11:12 von Tobias Weber | Report spam
Hi,
auf apple.com finde ich nirgends Angaben zum sound meines MacBook, zB
die Eingangs-Impedanz und Empfindlichkeit. Vermutlich schàmen sie sich
für's Grundrauschen...

Hat mal jemand gemessen?

Tobias Weber
 

Lesen sie die antworten

#1 Joe Kotroczo
07/10/2009 - 12:04 | Warnen spam
On 07/10/2009 10:12, in article
, "Tobias Weber"
wrote:

Hi,
auf apple.com finde ich nirgends Angaben zum sound meines MacBook, zB
die Eingangs-Impedanz und Empfindlichkeit. Vermutlich schàmen sie sich
für's Grundrauschen...

Hat mal jemand gemessen?



Du meinst das hier? (Ist AFAIK für'n MBP)

Line Input

The line input operates independently from all other audio input ports and
is always available. The line input supports recording at bit depths of 16,
20, or 24 bits per sample and at sample rates of 44.1 kHz, 48 kHz, or 96
kHz. Audio recorded from the line input is presented as a stereo data
stream. The line input gain can be adjusted from 0.0 dB to +30 dB.

During input of a 1 kHz, full-scale 1 VRMS sine wave (44.1 kHz input sample
rate, 24-bit sample depth, 0.0 dB input gain, no weighting) the audio line
input has the following nominal specifications:

Jack type: 3.5 mm stereo
Maximum input voltage: 1 VRMS (+2.22 dBu)
Minimum voltage input for full scale output: 31 mVRMS (-27.95 dBu) at input
gain = +30 dB
Input impedance: > 20 k‡
Frequency response: 20 Hz to 20 kHz, +0.5 dB/-3 dB
Signal-to-noise ratio (SNR): > 90 dB
Total harmonic distortion + noise (THD+N): < -75 dB (0.02%)
Channel separation: > 80 dB

Joe Kotroczo

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