Engineering Design NIDisk Instrukcja Użytkownika Pobierz pdf (Strona 16)

WaveDisk User Guide

files. SIGNAL can also be programmed to perform acoustic measurements automatically

on the stored events.

! !

Subject Microphone Record sound file in WaveDisk

! !

Continous sound spectrogram Edit and measure sound

in SIGNAL using STRIP events in SIGNAL

The above figure illustrates this process. Following is an overview of the steps involved.

1. Present the acoustic vocalization stream to the microphone or hydrophone.

2. Connect the microphone or hydrophone to WaveDisk.

3. Use WaveDisk to digitize and record the vocalization stream to one or more continuous

sound files. Normally, set the WaveDisk sample rate to at least 2.5 times the desired

recording bandwidth.

4. Start SIGNAL and use the STRIP command to view a continuous spectrogram of the

recorded sound file. STRIP produces a multi-screen "strip-chart" frequency-time

spectrogram (hardcopy will be available in the future), with typically 30-60 seconds of

sound per screen. This allows the user to navigate through a long recording, spotting

sound events and extracting them for detailed analysis. Settings such as frequency range

1 2 ... 11 12 13 14 15 16 17 18 19

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Engineering Design NIDisk Instrukcja Użytkownika Strona 16