Embarking on the journey of recording can be an exciting and rewarding endeavor, whether you’re a neuroscientists, neurologists, speech-language pathologists, psychiatrists, and other clinician, or someone exploring the world of vocal biomarkers. Here’s a step-by-step guide to help you kickstart your recording experience.
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Selecting the appropriate recording equipment is crucial. Invest in a quality microphone suited to your needs, considering factors like jack or XLR connection, and a reliable audio interface if necessary. Ensure your recording space is well-suited to your goals – minimal background noise and good acoustics make a significant difference.
The microphone should be a headset condenser with low noise, flat frequency response, and omnidirectional pattern. The spectral characteristics of a directional microphone are position-dependent, which induces unnecessary variability to recorded signals. The recorder should have connector as well as phantom voltage and gain compatible with the microphone.
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Choose recording software that aligns with your level of expertise and project requirements. Options like Praat, Audacity, GarageBand, or more advanced software like Adobe Audition offer user-friendly interfaces for beginners while providing robust features for professional use.
Nevertheless, clinical grade requires to record in exclusive mode, which many of available recording software do not provide. Additionally, you have to make sure that the sampling frequency is set to at least 44.100 kHz and bit depth to at least 16 bits.
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Position your microphone correctly for optimal sound capture. Generally, speaking directly into the microphone at a consistent distance provides clear and natural audio.
The standard position recommended by the community is in the cross between mouth and eyes.
Before diving into your main recording, check your microphone levels to prevent distortion or overly quiet recordings. Perform a brief test recording to ensure everything sounds as expected, and make adjustments as needed.
Minimize external noises by recording in a quiet environment without reverberation. Close windows, doors, and reduce background sounds to capture a clean and professional recording.
After recording, use your chosen editing software to refine your audio. Trim any unnecessary sections unsuitable for analysis.
Once satisfied with your recording, save your work and create backups. This ensures that your efforts are protected against unforeseen technical issues. Please consider using encryption to protect personally identifiable information of your patients.
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