#Append info line praat script get intensity how to
We'll discuss in the lab session how to read these sequences: the basic rules are
(Or, for variety, choose a second version or a third version.) These lists have been crafted so that every digit occurs equally often in every position (10 times), and every pair of digits occurs once spanning every adjacent pair of positions. The first part is to record yourself (or someone you can persuade to do it for you) reading 100 ten-digit number sequences. Your homework for next week has three parts.ġ. We will go over these concepts in class - some background is here. Get a sense of what recordings at different SNRs look like.įamiliarize yourself with the concept "amplitude" and "power" as applied to audio signals, and the notion of "bel" and "decibel" as relational measurement units. In each case, check the level of background noise and the level of the voice in the lab session, we'll show you how to measure them and compare them so as to estimate the signal-to-noise ratio ("SNR"). The ones with USB connections generally produce better results - they cost $10-30 online or at the Computer Connection.Įxperiment with using that arrangement to make a series of recordings with different amounts of background noise - in a reasonable quiet place (like the phonetics lab) or in a quieter place (like the sound booth in the lab), or in a place with more background (like the phonetics lab with your classmates rustling papers or drumming their fingers on the table. If you don't have a decent-quality microphone, use one of those that are available in the phonetics lab or buy an inexpensive head-mounted headphone/microphone combination. If you don't have a computer of your own, you can use the versions installed on computers in the Phonetics Lab. If you haven't already done it, install Praat and Audacity on your computer.
Extracting and saving segments from a longer recording. Understanding SNR (signal to noise ratio) and measuring it.Ĥ.
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