Digital Signal Processing Reference
In-Depth Information
Figure 2-2.
(a) Analysis of average power spectral density for low (0-1.5kHz) and high (1.5-
4.0kHz) frequency bands for 14 car noise conditions from Phase-I data collection. Overall
average noise level is also shown. (b) Photos show corpus collection setup: constructed
microphone array (using Knowles microphones), array and reference microphone placement,
constructed multi-channel DAT recorder (Fostex) with channel dependent level control and
DC-to-AC converter.
Figure 2-3.
Age distribution (17-76 years old) of the 500 speaker CU-Move Corpus
