BIOPAC® Systems, Inc. Logo

Contact Microphone

Life Science Data Acquisition at its Best

Request More Info
Contact Microphone
Part #: TSD108
The TSD108 acoustical transducer element is a piezo-electric ceramic disk, which is bonded to the interior of a metallic circular housing. The TSD108 interfaces with the DA100C general-purpose transducer amplifier to measure a wide array of physiological sounds.
  • Most commonly, the TSD108 is used to measure heart sounds or Korotkoff sounds. When the TSD108 signal is recorded along with the TSD120 blood pressure cuff signal, the Korotkoff sounds vividly mark the systolic and diastolic blood pressure.
  • The TSD108 can also record the sounds associated with rubbing or grinding (e.g., Bruxism).
  • To listen to the physiological sounds with headphones as they are recorded, pipe the TSD108 signal through the STM100C stimulator module.
See More...

BIOPAC data acquisition
View Spec PDF

Are You Looking for These?

Part #: TSD108
Categories: Transducers - Research
Subcategories: General - Research

With a different Platform



When connecting the TSD108 to the DA100C:

Black = Ground (GND)
Blue = Positive and Negative, interchangeable (Vin+ and Vin-)
  • When using this transducer with the EBI100C module, do not connect the GROUND pin of the TSD108 to the DA100C module. Doing so will cause inaccurate impedance measures, because the TSD108 contact surface is tied to isolated ground. An alternative is to insulate the TSD108 from the skin surface by using a latex balloon or some other non-conductive barrier. If this latter procedure is followed, the GROUND pin may be attached to the DA100C module.

See also: Telemetry System equivalent—SS17 and BIOPAC MRI Guidelines.




Knowledge Base

Recommended Items

Spotlight On
Smart Center controller, 2-3 wireless transmitters & AcqKnowledge plus case

Smart Center | Stand-alone BioNomadix Wireless Systems

Smart Center Stand-alone, Portable Wireless Physiology Systems Smart Center Essentials entry-level system includes a Smart Center Device (BN-SMART with USB power cable), 2 or 3 Transmitters (BN-xxx-T with chargers); AcqKnowledge for Smart Center, and a case. Smart Center Enhanced adds a Logger (BN-LOGGER) and Basic Scripting License (ACK100W-BAS) to the Smart Center Device (BN-SMART with powercable), 3 […]

View All
Latest News

NEWS CITATIONS – Heart Rate & Heart Rate Variability, Wingate Anaerobic Test, and Neuroscience of Music

BIOPAC provides software and hardware that allow for research teams to record and analyze respiration activity in physiological experimentation. Here are a few notable studies covering HRV, EMG, and EEG measurement. HRV (Jing Wei, Hong Luo, Si J. Wu, Paul P. Zheng, Genyue Fu, and Kang Lee) Humans encounter various stressful situations everyday at work, home, and school. Such stress when experienced at high degrees and/or […]

What makes you laugh the most?

Alan Macy Answers Proust Questionnaire BIOPAC co-founder and R&D Director, Alan Macy, was interviewed recently by Roger Durling for the Santa Barbara Independent. The article, “The S.B. Questionnaire: Alan Macy,” provided a background excerpt of the Santa Barbara entrepreneurs’ past as well as his answers to the Proust Questionnaire. The biomedical technology developed at BIOPAC reflects an ambitious […]

Read All
Request a Demonstration
Request a Demonstration