Title :
A portable instrument for phonocephalography
Author :
Manoli, Samir H.
Author_Institution :
Dept. of Electr. Eng., Texas Univ., El Paso, TX, USA
Abstract :
A portable instrument for phonocephalography is provided having a pair of ear insertable microphones of sufficient sensitivity to detect sounds from the surface and cavities of the head. The amplified signals from each microphone are passed through a frequency analyzer and a multiplexing oscillator for display on a two channel oscilloscope. Alternatively or additionally, the amplified signals may be displayed on a chart recorder. An ECG pickup and amplifier may additionally be provided, having input to the second channel of the oscilloscope, for correlating ECG signals with sounds from the ear. Such a device provides a simple, passive, noninvasive technique for diagnosis of, for example, tinnitus and intratemporal carotid aneurysm, and permits correlation of audible sounds from the head with patient´s ECG.
Keywords :
bioacoustics; biomedical equipment; patient diagnosis; portable instruments; 2 channel oscilloscope; ECG signals correlation; amplified signals; audible sounds; chart recorder; diagnosis; ear; ear insertable microphones; frequency analyzer; head cavities; head surface; intratemporal carotid aneurysm; multiplexing oscillator; noninvasive technique; phonocephalography; portable instrument; tinnitus; Displays; Ear; Electrocardiography; Frequency; Instruments; Magnetic heads; Microphones; Oscillators; Oscilloscopes; Signal analysis;
Conference_Titel :
Biomedical Engineering Conference, 1993., Proceedings of the Twelfth Southern
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0976-6
DOI :
10.1109/SBEC.1993.247442
