Engineering Design NIDisk Guia do Utilizador descarregar pdf (Página 34)

NIDisk User Guide

spectrogram 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 and spectrogram resolution can be used to

customize the display. Note: STRIP settings can be collected in a SIGNAL macro for

convenience.

5. After using STRIP to review the sound file and locate vocalization events, read individual

events into SIGNAL using the R /Q command.

6. Use SIGNAL to measure and analyze the sound events. Events can also be saved on disk

as individual sound files if desired.

7. SIGNAL can be programmed to perform many acoustic measurements automatically on

an entire group of sound files. See the programming chapters in the SIGNAL User

Guide

14. Using NIDisk with RTS

NIDISK can be used together with the Real-Time Spectrogram

(RTS) program to record

and visually review, measure, and edit extended acoustic data sequences up to hours in

length. The two programs work together as follows:

• NIDisk can digitize an entire data tape to a sound file, or perform direct-to-disk

recording, bypassing the tape entirely.

• RTS can rapidly page or scroll through the sound file on-screen, while measuring,

extracting, and storing sound parameters and sound segments directly from the screen.

Navigating a sound file on disk is much more efficient than playing, pausing, and

replaying from a tape player!

The RTS can scroll or page rapidly forward or backward through a sound file to search for

events interest. For example, the following 30-second sample screen was scrolled in 3

seconds – a review rate of 10 times real-time! The user can also page through the sound file

in either direction at 15 times real-time.

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Engineering Design NIDisk Guia do Utilizador Página 34