BIOPAC® Systems, Inc. Logo

Contact Microphone

Record acoustical physiological signals

Precision Transducer for Research Data Acquisition

Detect heart sounds, Korotkoff sounds, rubbing or grinding (e.g., Bruxism), and more

Request More Info
Contact Microphone
Part #: TSD108A

The TSD108A is a contact acoustical transducer. The sensing element is a piezo-electric ceramic disk that’s bonded to the interior of a plastic circular housing. The housing acts to focus intercepted surface pressure waves onto the piezo-electric ceramic disk to enhance both sensitivity and signal to noise ratio.

The TSD108A interfaces with the DA100C general-purpose transducer amplifier to measure a wide array of physiological sounds and pressure waves.

The TSD108A can

  • Measure heart sounds or Korotkoff sounds. For heart (including valve) sounds, the TSD108A can be secured to the respective torso location proximal to the source. When the TSD108A signal is recording sounds from the Brachial artery, simultaneously with the TSD120 blood pressure cuff signal, the Korotkoff sounds vividly mark the systolic and diastolic blood pressure.
  • Record the sounds associated with rubbing or grinding. (e.g., Bruxism).
  • Measure glottal activity and specifically record the production of both voiced and unvoiced sounds. To measure vocal cord behavior, the TSD108A is placed adjacent to the larynx.
  • Record the specific acoustical signature associated with the contraction of muscle fibers (place adjacent to striated muscle).

To listen to physiological sounds, as they are recorded, pipe the TSD108A signal through the STM100C Stimulator Module to drive an audio amplifier or pair of headphones.

See More...

BIOPAC contact microphone
View Spec PDF

Are You Looking for These?

Part #: TSD108A
Categories: Transducers - Research
Subcategories: General - Research

Equivalents
With a different Platform

Details

Compatibility


Specifications

Output Range: 2 μV – 200 mV
Noise: 2 μV rms (1 Hz – 1250 Hz)
Bandwidth: 1 Hz – 1250 Hz
Operating Temperature: -40 to +85 °C
Dimensions:  26 mm diameter x 10 mm high
Interface: Three (3) 2 mm pin plugs (Vsig+, Vsig, GND) to DA100C
Cable Length: 3 meters

Support

Applications

Downloads/Resources

Knowledge Base

Recommended Items

Spotlight On
free BIOPAC webinar

Data Acquisition Fundamentals | Basic Training for the MP160 System

Learn how to maximize your BIOPAC data acquisition system and implement best practices for setting up and optimizing your MP System.

The presentation will cover the following:
• Demonstrate complete hardware and software setup
• Include details on how to incorporate commonly used amplifiers in the D-series, C-series, and BioNomadix
• Review legacy issues related to older system components and workarounds
• Show how to properly set up participants including proper lead options, electrode options, placement, and grounding/isolation procedures

Watch Live on February 10

Register Now
Latest News

New Citations | Does Smiling Make You Happier? & More

BIOPAC provides software and hardware that allows research teams to study any physiological measure. Here are a few notable studies using BIOPAC equipment for ECG, EDA, and HRV Analysis. Intelligent Interaction Leading to Solutions The research being done in the HCI space is amazing, as scientists continue to make computers more adept at communicating with humans, allowing more […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration