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Phonature -> Products -> Mobile Phone Application -> PocketPC Software -> HandDee Spectrum Analyzer
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| HandDee Spectrum Analyzer (HandDee-SA) |
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| Download: |
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| Purchase: |
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| Version: |
1.0.2 |
| Last Update Date: |
14 June 2003 |
| File Size: |
39K |
| License: |
Shareware |
| Rquirements: |
Symbian 7.0 UIQ and 600KB RAM |
Description:
With the HandDee Spectrum Analyzer, a PDA becomes probably the world's cheapest, smallest
and easiest-to-use color graphic handheld real-time audio spectrum analyzer, not to
mention the expensive & bulky portable RTA.
The software generates real-time fading frequency spectrum or 1/3 octave ISO bar.
An intelligent wave monitor window gives you a stable waveform display. Smart peaking
envelopes are provided for music monitor. HandDee features makes speaker system frequency
response & musical recordings check a snap.
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| Features: |
Hightlight
- Waveform, fundamental frequency readout, plus either spectrum analyzer or1/3 octave ISO bar display.
- Fading reveals trends in waveform and spectrum plots.
- Transition effect is even better than long persistence phosphor used in oscilloscopes.
- Pause function for detailed inspection of waveform or spectrum / ISO bar display.
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Other Features
- Waveform Display features
- HandDee intelligent display with automatic triggering shows stable sound samples upon receiving stable sound input.
- HandDee automatic scaling to expand low level sound signal for easy examination.
- Digital frequency readout and marking on spectrum
- HandDee fundamental frequency measurement with overtone rejection.
- Loudest note display when multiple sounds detected.
- Accuracy of about 0.5% or 1Hz, 10 times better than Fourier Transform.
- Spectrum & ISO bar Display features
- Grid lines can be turned on or turned off.
- HandDee musical sound peak power envelop.
- 1/3 octave ISO bar display.
- Analyzer settings
- Turn on/off grid lines.
- HandDee preset analysis parameters for frequency and time averaging.
- 500Hz frequency range for bass characteristic measurement.
- 4KHz frequency range in monitoring speech, musical performance or recordings.
Demonstration version stops after 1 minute.
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Application:
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Applications:
- PocketPC recording noise identification and removal
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Set TIME AVERAGE to MEDIUM or LONG, FREQ SCALE to
LINEAR, select SPECTRUM ANALYZER display, then
turn on frequency and dB grid by tapping on the
respective bottom icons. Spectral peaks of
frequency and amplitude of pocketPC internal
sampling noise becomes clear. Tab background noise
ubtraction icon. The spectral peaks will disappear.
- Plot Hi-Fi or speaker system frequency response profile
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Download and play ¡§Frequency sweep.wma¡¨ Sound
Test File in endless loop using Media Player.
Feed audio output to speaker system or headphone.
Set TIME AVERAGE to SHORT, FREQ RESOLUTION to
MEDIUM (for PPC) or SHORT (PPC2002), PEAK
PROFILING to CALIBRATE, adjust volume until a
large amplitude waveform without peak clipping
is shown in the upper screen. In a few seconds,
the peaking envelop gives the frequency response
profile of the audio system. Select LOG or
LINEAR scale to see clearly the low and high
frequency response.
- Detect persistent noise of audio studio
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Set TIME AVERAGE to LONG and PEAK PROFILING to
CALIBRATE. Select SPECTRUM ANALYZER display.
Switch between LOG freq scale to detect hums and
LINEAR freq scale to discover buzz noise. When
suspect noise is found, move the PocketPC around
to find the location of maximum noise amplitude
where the source of noise is. Take readings of
the noise amplitude, remove suspect noise source
and see whether the noise amplitude has reduced.
- Setting up for vocal training
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Set TIME AVERAGE to SHORT or MEDIUM and FREQ
RESOLUTION to NARROW or MEDIUM. Select
SPECTROGRAM display. Keep quiet and tab on the
noise subtraction icon to remove internal
sampling noise that clutters the spectrogram.
Then sing at the loudest level and tab the Auto
sB range setting icon.
- Setting up for music enjoyment
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Play your favorite music using Media Player or
other audio players. Start HandDee Spectrum
Analyzer. Set PEAK PROFILING to MUSIC. Select
SPECTRUM ANALYZER display. The PocketPC becomes
a Hi-Fi with real-time spectrum analyzer.
Alternatively, you can play music from your
computer or Hi-Fi and the PocketPC becomes a
signal monitor.
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