Engineering Design NIDisk Manual de usuario descargar pdf (Pagina 12)

WaveDisk User Guide

Duration is specified in seconds, and is limited only by the available space on the destination

disk drive. Note: WaveDisk does not check for sufficient disk space for your requested

duration. Acquisition length in seconds is related to disk space in MB as follows. For

example, at 44100 Hz sample rate, 30 minutes of one-channel sound will require 151 MB of

disk space.

Disk space in MB = (Acquisition length in secs) * (sample rate in Hz) * (no. channels)

/ 525,000

Sample rate is specified in Hz, and may be 11025, 22050, or 44100 Hz.

Buffer mode indicates where to store the data while it's being acquired – in a temporary

memory buffer ("RAM buffer"), in a temporary disk file ("Disk buffer"), or in the output

sound file ("Direct to/from file"). The first two options require copying the temporary buffer

to the output sound file after acquisition, which can be time-consuming for very long

acquisitions (> 1 hour). The third option records directly into the output file, eliminating this

step.

Acquiring data screen

During acquisition, WaveDisk reports the duration of sound acquired so far and displays a

progress bar. Click Stop to halt the acquisition before it completes, and the sound data

recorded up to that point will be saved.

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Engineering Design NIDisk Manual de usuario Pagina 12