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DartDisk User Guide

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Subject Microphone Record sound file in DartDisk

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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 the DartDisk input panel.

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

sound files. Normally, set the DartDisk 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 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.

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Engineering Design NIDisk Guida Utente Pagina 26