OBSVAC Home General Information: • Equipment • The Founder • Affiliate Scholars • Student Assistants • Pedagogy tapes for sale • Vocal Studies Home		OBSVAC Equipment 1. KayPentax Multi-Speech, Model 3700 Multi-Speech is a comprehensive speech recording, analysis, feedback, and measurement software program. It provides spectograms, formant traces, pitch extractions, power spectrum analysis, LPC analysis and other useful functions. 2. VoceVista: Visual Feedback for Instruction in Singing VoceVista is a unique hardware/software package, incoporating the two electronic signals most revealing of the singing voice: real-time spectrum analysis and electroglottograph. 3. Laryngograph An electroglottograph used in non-invasive investigation of vocal fold behavior. Duration, velocity, and degree of vocal fold closure is visually represented by the Lx waveform. 4. Kay Elemetrics, RL5 9100 Rhino-Laryngeal Stroboscope Components: Two flexible endoscopes One rigid endoscope Rhino-Laryngeal Stroboscope The rhino-laryngeal stroboscope system provides professional voice users with a convenient and powerful means of examining laryngeal anatomy and vocal-fold physiology. Both constant and strobe light sources are provided for either general endoscopic viewing (nasal, nasopharyngeal, or laryngeal) or stroboscopic evaluation of the vocal folds during phonation. Both flexible and rigid endoscopes can be used with the system. During stroboscopy the rapidly vibrating vocal folds are illuminated with brief pulses of light. By detecting the pitch (fundamental frequency) of the vocal folds, the timing of these flashes can be regulated through electronic circuitry to produce an image of the vocal folds vibrating slowly to permit detailed observation of vocal fold movement, or "standing still" at various positions within the vibratory cycle. It is important to understand that the image viewed during the stroboscopic exam is not a continuous glottal cycle but a "fusion" of portions of successive cycles. By using stroboscopy, important dynamic aspects of phonations can be viewed clearly. *Note: examinations performed only by licensed medical personnel 5. Ambulatory Monitoring, Inc., Respitrace Systems Model 10.9000 The Respitrace, a respiratory inductive plethysmograph, consists of two elastic bands with insulated wires (Respibands) wrapped around the rib cage and abdomen and connected to an Oscillator module and Calibration Unit. It measures rib cage and abdomen compartmental volume excursions through changes in self-inductance of the Respibands. The sum of these two excursions can be calibrated to a known volume with spirobag or spirometer. The sensors have insulated wire for self-induction monitoring with gold-plated contacts and come in various sizes. 6. Kay Elemetrics, Aerophone II, Model 6800 A complete system for measuring air-flow and air pressure parameters. The software displays and prints graphical and numerical analysis of peak-flow, vital capacity, duration, phonation quotient, mean air-flow rate, loudest tone level, softest tone level, sound pressure level, ab-adduction rate, subglottal air pressure, glottal power, intraoral pressure, glottal efficiency, and glottal resistence. 7. Brüel & Kjær, Sound Level Meter, Type 2230 An integrated meter for measurement of SPL (Sound Pressure Level), Max., and Min., and SEL (Sound Exposure Level) 8. Hitachi, Oscilloscope V-525 A portable-type, advanced-class oscilloscope which displays the Lx waveform generated by the Laryngograph. 9. Spirometrics, SMI Spirometer, Model 2451 A portable, compact, lightweight spirometer that tests pulmonary functions. Helpful in determining a singer's VC (vital capacity) and MVV (maximal voluntary ventilation). 10. A recording/playback sound system which includes: Technics, Stereo Integrated Amplifier SU-V660 Sony, Cassette Deck TC-WR820 Sony, Compact Disc Player CDP-970 Technics, Automatic Turntable System SL-BD20 Tascam, Digital Audio Tape Deck DA-30 Aony, Stereo Center 230 (Reel-to-Reel Player) Sony, Microphone ECM-989 Symetrix, Dual Mic Preamp SX202 KEF, Power Speakers (s) Atus, Four Channel Phantom Power Supply CP8506 11. A recording/playback video system which includes: Proton, 27" Color TV Screen VT-296 JVC, Video Cassette Recorder HR-D860U JVC, Video Cassette Recorder HR-D600U Newvicom, Color Video Camera WV-3150 Sony, Video Camera Selector HVS-2000 Modern, TVLink RGB/NTSC converter Model 20 RGB Dynamics, Translator TR-1500 (on trial) 12. A collection of anatomical models and charts. Helpful in conveying accurate information regarding the physiology of the singing instrument. 13. Gateway computer 14. Dell Laptop
			Oberlin students, e-mail obsvac@oberlin.edu for appointments. Other inquiries, contact Director of OBSVAC Lorraine Manz