![]() ![]() ![]() Therefore, complete the below prompts immediately before beginning a voice sample recording with an examinee. Part 2: Pre-Recording Sound Check and Sound Level CalibrationĪ pre-recording sound check and sound level calibration is required immediately before each and every acoustic analysis assessment. In the same sound window, g o to ‘Intensity’ > ‘Intensity settings…’ and in the section ‘View range (dB):’ enter the numbers 50 and 100 for the minimum and maximum intensities. In the same sound window, go to ‘Pitch’ and ‘Pitch settings…’ and in the section ‘Pitch range (Hz):’ enter the numbers 60 and 600 as the minimum and maximum F 0. In the ‘Show Analyses’ window, ensure ‘Show spectrogram’, ‘Show pitch’, ‘Show intensity’, and ‘Show Pulses’ are selected and change the 'longest analysis (s):' from 10 to 200 or 300. In the sound window, click ‘View’ and ‘Show analyses…’. Open (or create) an audio file the Praat Objects window by selecting ‘View & Edit’ If you are new to Praat, I recommend viewing the extended video tutorial, otherwise the abbreviated video covers the below information. Step-by-step instructions are outlined below, with an extended (15-minute) and an abbreviated (1-minute) video tutorial available for viewing. Part 1: Preparing Praat's Default Settings Therefore, you should download and install the freeware program Praat (free!) prior to beginning this tutorial. This tutorial will use Praat for the acoustic analysis software. I have no financial conflict of interests for any of these pieces of equipment. The equipment I will be using in this tutorial which you could consider using for your own acoustic analyses are: head-mounted, AKG, omnidirectional, condenser microphone ($165 USD) a pre-amp (~$120 USD) a connecting cable for the microphone and pre-amp ($75 USD) and a personal laptop compter. This article also outlines a description of the minimum requirements for assessment equipment, testing environment, and acoustic outcomes. Many of the analysis settings and protocols used in this tutorial were pulled from the ASHA-recommended guidelines in that article. To begin, you should read the free, open-access article by ASHA. This tutorial will take you through the steps necessary to complete an acoustic assessment of voice - an integral component of the comprehensive, gold standard voice assessment. ![]()
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