Lecture 6 Audio Recording

Lecture 6 Audio Recording - LIN 4930 Audio Recording and...

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LIN 4930 Audio Recording and Analysis Issues
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Issue 1: Microphone Different models vary in frequency response (i.e., sensitivity to energy at different frequency bands) Ideal microphone would be equally sensitive to all frequency ranges
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Issue 2: Recording Equipment Operation Common analog recorders used in field work often result in problematic signals to analyze Recording speed Automatic recording Fragility of longer tapes Low batteries Signal reduction, variable recording speed, intermittent stoppage
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Issue 3: Competing Background Noise Types to Speech Steady-state noises 60 Hz hum from AC electrical sources Friction noises Ex: Wind, fans, vehicles, clothing movement (body bugs) Can be addressed by filtering to allow for more accurate auditory analysis of speech Competing speech Transient nonspeech noises Ex: street noises, gunshots, door slamming, horns Question: What will be the impact on analyzing speech?
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1. 0.8 second reverberation 2. 1.3 s reverberation 3. 2.0 s reverberation 1. 2.
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This note was uploaded on 10/22/2011 for the course LIN 4930 taught by Professor Habib,r during the Spring '08 term at University of Florida.

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Lecture 6 Audio Recording - LIN 4930 Audio Recording and...

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