AUDIOFONIATRIA E BIOINGEGNERIA

Learning Objectives

• BIOINGEGNERIA ELETTRONICA E INFORMATICA

  Knowledge of the physical phenomena at the base of the audiometria Knowing the different transducers and their principle of operation Knowing the operation of the various electronic instruments used in the field To know how to use the Excel software and Access Knowing how to use software for audio analysis, including comparisons between spectra

Detailed Course Content

• BIOINGEGNERIA ELETTRONICA E INFORMATICA

  The corrugating phenomena Transverse and longitudinal waves; The quantities characterizing the wave phenomena wavelength l, the n frequency, the pulsation w, amplitude; damped and forced oscillations; spectrum; Intensity of a wave; Reflection and refraction; Total reflection; Acoustic waves, tone height, intensity; Levels of loudness; sensitivity human ear; Doppler effect - the relative motion of the source-observer; moving source - stationary observer; electromagnetic waves. Transducers Definition; active and passive transducers; actuator; Some physical principles used in the making of the sensors: Ohm's Law: In an electric circuit in which a resistor is present the relationship between the electrical quantities; electromagnetic induction principle: In an electric circuit consisting of a resistance coil nothing; the magnetic equation; piezoresistive effect; thermoresistive effect; photoelectric effect; photovoltaic effect; Hall effect; thermoelectric effect; A / D and D / A Instrumentation for the 'audiometry Impedance analysis: physical principle; General operating principle; block diagram, examination: tympanometry, reflexology; use and operation of the instrument, characteristic graphs; formula acoustic impedance; recording techniques; the tympanogram Excel: tool for data analysis Definition of cell, spreadsheet and file; The anchors; Use of special keys; The move handle; relative and absolute references; Formatting of the spreadsheet (date, currency, numeric, general, and c.); Editing a worksheet (only copy the format of a cell); input area and output; The formula bar; The formulas (Sum, Average, Max, Min, percentage etc.). The graphs (histograms, pie charts, etc.). Changing a chart; Using Excel as Data Base; Field and Record definition; Sorting Data; "= IF" function; Function "= Conta.Se" formulas for statistical analysis; filters; The passage of formulas and data from other spreadsheets; The passage of formulas and data from other files. Access: a tool for data storage: Introduction to databases; Elements of an Access database; Open an existing database; The Database window; Create an empty database; Creating tables; Create a table in Datasheet view; Create a table in Design view; Save the tables; The masks; Creating masks; Add new record with a mask; Change the data in a mask; Delete records; Sort records; Filter records; The data sheets; Set the width of the columns; Operations on a data sheet; Select fields and records; in which the columns display options; Queries; Create a query; The Simple Query Wizard; Design view; Query; The reports; Find information; Print forms, reports, and data sheets; Relations; Overview of Access Advanced. Audacity: Programme for analysis spectra Import and export audio files; edit audio tracks; manual selection; Automatic selection; copy, cut and paste; remove it; hush; mixing; growth, division and reduction of the channels; from stereo to mono; a stereo track; from mono to stereo; record live; record your own voice; spectra and harmonics; harmonic analysis and spectra. Comparison of spectra

Textbook Information

• BIOINGEGNERIA ELETTRONICA E INFORMATICA

  Notes prepared by the teacher