CRSLA Lab: Instrumentation & Methodology
High-fidelity speech recording
Participants' speech is recorded in controlled sound-treated environment using high-fidelity
recording devices; to be later digitized, edited, analyzed and/or played to listeners.
Instrumentation:
Directional and omnidirectional microphones; DAT recorders/CD recorders.
Digitization and editing of recorded samples
The recorded sample is converted from analog to digital form in order to allow further
processing of the signals. Additionally, the recordings are cleaned up, i.e. removal
of unnecessary fillers, repetitions and the recorded chunks are split into unfinished
sound files.
Instrumentation:
DAT/CD recorders, connected to computers with sound editing programs such as Sound
Forge, PRAAT, Cool Edit, Wave, etc
Acoustic Analysis
The individual digitized sound files are now analyzed for various acoustic parameters
depending on the experiments' rationale (e.g. duration, frequency, amplitude, formant
history analysis, LPC analysis, etc.)
Instrumentation:
Software programs such as CSL, Multispeech, PRAAT, BLISS, etc.
Acoustic Manipulation
Depending on the experiments' rationale, the individual digitized sound files could
also be manipulated or edited in different ways i.e. smearing, adding noise, splicing
segments, changing acoustic parameters of duration, frequency, amplitude, sampling
rate, etc.
Instrumentation:
Software programs such as CSL, Multispeech, PRAAT, BLISS, etc.