Results 161 to 170 of about 5,372 (205)

The Photographic Preparation of Oscillograms

Review of Scientific Instruments, 1947
exaly   +3 more sources

Clinical investigation by the oscillogram of peripheral arteries

American Heart Journal, 1955
Abstract An analysis of the oscillograms (tracings of arterial oscillations) of the extremities of 127 subjects, both normal and diseased, is presented. Tracings were made with a specially constructed differential manometer based on the principles of the torsion-tension relationship of a twisted metal band, and utilizing an ordinary blood pressure ...
M G, KETTNER, C, FERRERO, P W, DUCHOSAL
openaire   +2 more sources

Interpretation of the Speech Oscillogram

The Journal of the Acoustical Society of America, 1966
Due to the dynamic nature of sound, it is difficult to observe speech characteristics quantitatively by ear and make precise reproducible measurements unless of a rather coarse nature. However, we can stop the motion and obtain static measurable elements by taking pictures of the sound waves.
Homer Dudley, Everett Aho
openaire   +1 more source

The acceleration-oscillogram method of motor-torque measurement

Electrical Engineering, 1942
The need for an improved method of measuring starting torque of large induction starting synchronous motors as compared to the power input and dynamometer methods, has led to the use of the acceleration oscillogram. A low ripple, permanent magnet type d-c generator is driven by the motor, and traces a time-speed oscillogram, from which acceleration ...
C. R. Atkinson, E. G. Downie
openaire   +2 more sources

Measuring air flows with recording on an oscillogram

Measurement Techniques, 1974
1. Recording of air (gas) flow measurements by means of an oscillograph provides higher precision than visual reading and accelerates the testing process. 2. In servicing complicated systems with a large number of instruments, the above method is more economical and simple. 3.
I. N. Khramov, V. N. Khramov
openaire   +1 more source

Wavelet frequency spectrum analysis of oscillograms

The Analyst, 1999
By combining wavelet transform with frequency spectrum analysis, wavelet frequency spectrum analysis of an oscillogram was achieved, based on the wavelet property of extracting useful information. Compared with Fourier frequency spectrum analysis of an oscillogram, this method presents many advantages.
Jianbin Zheng, Xiuqi Zhang, Hongquan Zhang, Hong Gao (H. Kao)   +3 more
openaire   +1 more source

Film carrier for the analysis of oscillograms by means of a travelling microscope

Journal of Scientific Instruments, 1960
exaly   +2 more sources

USE OF OSCILLOGRAMS IN STUDIES OF THE VOICE

Archives of Otolaryngology - Head and Neck Surgery, 1938
The value of the oscillographic tracing in the study of vocal characteristics is well known, but the acquisition and management of the equipment appear to create a rather formidable problem for one who has little familiarity with such apparatus. Today the microphone and the public address system are so commonly seen that they are seldom noticed.
openaire   +1 more source

Photoelectric Comparator for Measuring Oscillograms

Review of Scientific Instruments, 1954
A device for measuring photographic oscillogram coordinates is described. By means of a photoelectric balancing technique the instrument allows the locating of the ``middle'' of a photographic line with an error of the order of a few microns. The ``middle'' of a line is defined by the instrument as being the point of equal transmission, which is the ...
openaire   +1 more source

A Comparison of Temporal Measures of Speech Using Spectrograms and Digital Oscillograms

Journal of Speech, Language, and Hearing Research, 1986
To determine whether any systematic differences occur as a result of using spectrograms versus digital oscillograms to make durational measurements, a number of temporal features (e.g., voice onset time, vowel duration, and consonant closure duration) for 3 speakers were independently measured by 2 different investigators.
B L, Smith, J, Hillenbrand, D, Ingrisano
openaire   +2 more sources