Preview only show first 10 pages with watermark. For full document please download

Status Sm-cb1 - Innerfidelity

   EMBED

Share

Transcript

Status SM-CB1 Headphone Measurements: Frequency Response Isolation Attenuation of External Sound vs. Frequency 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 10 5 0 -5 Reduction in dB Amplitude (dB) Top - Compensated and Averaged Bottom - Raw Data for Five Headphone Positions -10 -15 -20 -25 -30 -35 -40 -45 -50 10 100 1000 10000 100000 10 100 Frequency 1000 10000 100000 Frequency Electrical Impedance and Phase 30 Hz Square Wave Measured with 600 Ohm output impedance. 50 0.05 60 0.04 40 35 20 30 25 0 20 -20 15 10 -40 0.03 0.02 0.01 Volts 40 Phase in Degrees Impedance in Ohms 45 0 -0.01 -0.02 -0.03 -0.04 5 0 10 100 1000 -60 100000 10000 Frequency Impedance -0.05 0.00 0.01 0.02 0.03 0.04 0.05 0.06 Time in Seconds 0.07 0.08 Right Phase %THD+noise @ 90dB and 100dB 0.09 0.10 Left 300 Hz Square Wave 100 0.04 0.03 0.02 0.01 Volts %THD+noise 10 1 0 -0.01 -0.02 0.1 -0.03 0.01 10 100 1000 10000 100000 Frequency Left 90dB Right 90dB Left 100dB -0.04 0.000 0.001 0.002 0.003 0.004 0.005 0.006 Time in Seconds 0.007 Right 100dB Right Volts RMS required to reach 90dB SPL: Impedance @ 1kHz: Power Needed for 90d BSPL Broadband Isolation in dB (100Hz to 10kHz): Impulse Response 0.03 0.068 39 0.12 -14 0.02 0.01 0 -0.01 -0.02 -0.03 0.0000 0.0003 0.0006 0.0009 0.0012 0.0015 0.0018 Time in Seconds 0.0021 0.0024 0.0027 0.008 0.0030 Copyright © SOURCE INTERLINK MEDIA All rights reserved. Vrms Ohms mW dBr 0.009 Left 0.010