PG-20 and PG-60

The PG-20 and PG-60 are handheld, battery-operated devices that give real-time estimates of the subglottal pressureSubglottal pressure, or Subglottic pressure, is the pressure that builds up beneath (“Sub-”) the vocal folds. The amount of subglottal pressure generated is determined by the airflow through the leakage of air between the vocal folds and the resistance to that flow during speech or singing. The PG-20 and PG-60 are self-contained systems – no computer or computer software is needed for their operation. The two models differ only in pressure range measured. The PG-20 measures up to 20 cm H2O and the PG-60 up to 60 cm H2O. The PG-60 is designed to be useful in monitoring the higher subglottal pressures in loud speech and singing.

Aeroview
The air pressure in the lungs during speech or singing supplies the energy that generates the human voice. This lung pressure is also commonly referred to as the subglottal pressureSubglottal pressure, or Subglottic pressure, is the pressure that builds up beneath (“Sub-”) the vocal folds. The amount of subglottal pressure generated is determined by the airflow through the leakage of air between the vocal folds and the resistance to that flow or tracheal pressure, though these are all technically slightly different. We will hereafter use the term subglottal pressureSubglottal pressure, or Subglottic pressure, is the pressure that builds up beneath (“Sub-”) the vocal folds. The amount of subglottal pressure generated is determined by the airflow through the leakage of air between the vocal folds and the resistance to that flow.

Knowledge of the subglottal pressureSubglottal pressure, or Subglottic pressure, is the pressure that builds up beneath (“Sub-”) the vocal folds. The amount of subglottal pressure generated is determined by the airflow through the leakage of air between the vocal folds and the resistance to that flow driving the laryngeal voice source is very important in understanding the operation of the voice. Until recently, the subglottal pressureSubglottal pressure, or Subglottic pressure, is the pressure that builds up beneath (“Sub-”) the vocal folds. The amount of subglottal pressure generated is determined by the airflow through the leakage of air between the vocal folds and the resistance to that flow has been difficult to measure non-invasivelyA non-invasive measurement is one that does not require the introduction of instruments into the body.. The PG-20 and PG-60 use a version of the intraoral pressurePressure within the mouth when the lips and the velopharyngeal passageway are closed interpolation technique introduced by Glottal Enterprises founder Martin Rothenberg (J. Acoustic Society of America 53, 1632–1645). Real-time operation is accomplished by means of a unique patented electronic circuit. In the PG-20/PG-60, the intraoral pressurePressure within the mouth when the lips and the velopharyngeal passageway are closed during a /p/ consonant is recorded by means of a pressure transducer within the unit that is accessed via a standard Luer connector on the end of the unit. The PG-20 is supplied with a number of pressure sensing tubes, each with a mating Luer connector. The probe tube for the oral pressure transducer should be placed between the subject's lips, usually in the corner of the mouth, where it is least affected by lip motion.



To make it easier to record a meter reading, the PG-20/PG-60 has a HOLD function. Pushing and holding down the HOLD button during or just after an utterance will cause the meter reading to remain at the value it was at the instant the button was pushed.

Though designed to be a self-contained system that outputs pressure values on an LED array, a jack on the side of the PG-20 or PG-60 allows the user to connect the device to a computer using a user-supplied data acquisition system to allow analysis using user supplied software.





This product is for research and teaching purposes only. It is not a medical device. It is not intended to be used in the diagnosis, cure, treatment, mitigation or prevention of disease and it is not intended to affect the structure or function of the body.

PG-20 and PG-60

  • One-handed operation
  • Battery operated (9V rechargeable battery) - supplied
  • Works with 9V DC Power Adapter - supplied
  • LED lights for ease of reading
  • LCD display for instantaneous pressure readout
  • HOLD function to aid recording data points
  • Raw signal output for external recording/data acquisition (3.5mm phono jack)
  • Individually wrapped, disposable tubes





This product is for research and teaching purposes only. It is not a medical device. It is not intended to be used in the diagnosis, cure, treatment, mitigation or prevention of disease and it is not intended to affect the structure or function of the body.

System Components


PG 20
Includes:
  • • PG-20 Unit
  • • Pack of 10 tubes with Luer Lock connectors
  • • Manual
  • • 9V rechargeable battery and 9V power adapter
PG 60
  • • PG-60 Unit
  • • Pack of 10 tubes with Luer Lock connectors
  • • Manual
  • • 9V rechargeable battery and 9V power adapter





This product is for research and teaching purposes only. It is not a medical device. It is not intended to be used in the diagnosis, cure, treatment, mitigation or prevention of disease and it is not intended to affect the structure or function of the body.

Pictures

slideshow