|
Application
notes for Realtime Analyzer (RA) and Sound Analyzer (SA) |
Measurement of PC's
soundboard by Realtime analyzer
|
| 1 |
Measurement of the frequency response by the signal generator and FFT analyzer |
| 2 |
Distortion measurement by the THD
analyzer
|
| 3 |
Direct connection between line-in and line-out
|
| 4 |
Testing the quality of built-in
microphone jack |
| 5 |
Impulse response measurement of the
listening room |
|
Application of Realtime analyzer's oscilloscope
 
|
| 1 |
Introduction of oscilloscope for
observing input waveform |
| 2 |
Basic measurement setup for comparing
input and output
waveforms |
| 3 |
Measurement of amplifier
characteristics |
| 4 |
Speaker phase check |
| 5 |
Connecting an oscilloscope probe to
PC's microphone input |
| 6 |
Vpp voltage measurement by the
oscilloscope |
| 7 |
Using an oscilloscope
probe with USB audio interface |
|
| Laboratory exercises for
analog circuits and electronics as hardware homework with student laptop
computer instrumentation, by Marion O. Hagler, Department of
Electrical and Computer Engineering, Mississippi State University.
|
 
Laboratory experience has always been an integral part of engineering education.
Prof. Hagler is looking at the possibility of using the Realtime Analyzer
(especially, signal generator, FFT analyzer, and oscilloscope) in teaching undergraduate
students in the
circuit and electronics courses. In his class, students construct circuits and
make measurements on them with the audio capability of their laptop
computer at home.
Prof. Hagler presented his recent results in September 2004 at the 33rd International Symposium
IGIP/IEEE/ASEE Conference on Engineering Education (2004) in Fribourg,
Switzerland. He kindly provided to us his manuscript and the presentation slides.
To give hints and ideas for how to use the Realtime Analyzer as educational
material in electronics, we publish his work here with his permission.
|
|
Instrumental tuning
 
|
| 1 |
Acoustic guitar tuning by the cross-correlation
meter and FFT analyzer |
| 2 |
Testing the performance
of automatic tuner |
| 3 |
Guitar tuning by use of
the beat, X-Y plot of oscilloscope |
|
Audio measurement report
 
  |
| 1 |
Preparation of the impulse
response measurement system |
| 2 |
Measurement of time alignment, direct sound, and reflective
sound |
| 3 |
Measurement of the reflective sound and the reverberation
time |
| 4 |
Compensation of the frequency characteristics of
microphone |
| 5 |
Frequency characteristic of
loudspeaker |
| 6 |
Measurement of loudspeaker, WILSON AUDIO WATT3 (ROSE) |
| 7 |
Frequency response and THD
(Total Harmonic Distortion) of loudspeaker |
|
Concert hall measurement report:
1/10 scale model experiment
 
 |
| 1 |
System test before
measurement |
| 2 |
1/10 scale model experiment |
| 3 |
Analysis of the measured impulse
response by SA |
| 4 |
Testing the effect of reflector panels
on the ceiling |
|
Analysis of piano music
 
 |
| 1 |
Analysis of anechoic room
recording |
| 2 |
Difference of music
recorded in an anechoic room and in the Berlin philharmonic hall |
| 3 |
Reverberation time
estimation from the recorded music |
|
Car stereo measurement
 
 |
| 1 |
Ferrari V8 engine sound
measured inside car |
| 2 |
Measurement of car stereo
inside Ferrari |
|
Tip: Handycam was installed in
the car to record the engine
sound |
|
| Automobile Noise Analysis
 
 
|
| 1 |
Rotation speed and its
vibration frequency of Ferrari V8 engine |
| 2 |
Running ACF analysis of
Ferrari V8 engine exhaust note |
| 3 |
Alfa Romeo V6 engine exhaust
noise |
| 4 |
Rotation speed of Ferrari V8
engine measured by the ACF |
| 5 |
High time resolution ACF
analysis of Ferrari V8 exhaust note |
| 6 |
Analysis of sound direction
from the cross-correlation |
| 7 |
Analysis of directional
information from the engine sound |
|
| Automobile Noise Analysis 2:
Ferrari F40
   
|
| 1 |
Analysis of F40 (0-200km/h) |
| 2 |
Analysis of F40 exhaust
note |
| 3 |
Analysis of the F40
competition exhaust note |
| 4 |
Analysis of F1 exhaust
note |
|
| Measurement of rotational speed of
a motor
   
|
| 1 |
Measuring motor sound:
experiment setup |
| 2 |
Rotational speed of motor
measured by the autocorrelation |
| 3 |
Measurement of a motor performance |
| 4 |
Measurement of a motor performance
2 |
| 5 |
Comparison of the dynamic characteristic of
motors |
|
| Analysis of Japanese voice |
| 1 |
Measurement of the fundamental frequency and the formant
frequency of vowel "a" |
| 2 |
Relationship between the fundamental frequency, formant
frequency, and the autocorrelation |
| 3 |
Measurement of a female voice,
comparison with male voice |
| 4 |
Measurement of voice with different pitch |
| 5 |
Japanese vowel a, i, u, e, o |
| 6 |
Japanese syllables "a, ka,
sa, ta, na, ha, ma, ya, ra, wa" |
| 7 |
Japanese syllables "ka,
ki, ku, ke, ko, sa, si, su, se, so" |
|
| Sound measurement for medical diagnosis |
|
Research proposal |
|
    
|
|
|
|
| Airport Noise Analysis
   
|
| 1 |
Passenger jet landing noise (At Nagoya Airport) |
| 2 |
Noise of jets passing overhead (Measured at Heiwa park,
Nagoya City) |
| 3 |
Landing noise in darkness (At Nagoya Airport) |
| 4 |
Fighter plane takeoff (Japan Air Self-Defense Force, Komaki
military base) |
| 5 |
Helicopter (Japan Air Self-Defense Force, Komaki military
base) |
| 6 |
Jumbo jet taking off Nagoya Airport |
| 7 |
Jumbo jet landing on Nagoya Airport |
| 8 |
Effect of the jet noise on hearing |
| 9 |
Analysis of the high frequency components of landing jet
passenger plane |
| 10 |
Analysis of the low frequency components of jet plane |
|
| Air conditioner
noise |
| 1 |
Measurement of the background noise |
| 2 |
Measurement of the operation sound of air conditioner |
|
| Toilet Flushing Noise |
| 1 |
Running ACF measurement of toilet flushing noise |
| 2 |
Automatic measurement and identification by use of EA (Environmental noise Analyzer) |
|
ymec@ymec.com
