Sound Test Files - Description:
Some sound files in WMA format are included to help you calibrate your headphone, loudspeaker, headphone, Hi-Fi and related audio equipment.
"ever_rising1.wma" and "freq_sweep.wma" consists of a tone that increase in pitch endlessly. The harmonics are designed to fade in from the bottom and fade out at high pitch. It is the equivalent of the visual ever rising staircase. An audio perception paradox. Its application is in the checking of audio equipment frequency response. As the harmonic peaks sweep through the spectrum, you can see the locations of resonant peaks. A peak profiling line that holds the most recents spectral peaks for more than 3 seconds will give a stable peaking envelop which is the frequency response curve of the loudspeaker system.
"intermodulation.wma" consists of two sine waves of 1KHz and 1.1KHz. If the amplitude response of the loudspeaker system is perfectly linear and there is no saturation or amplitude distortion in any part of the system, then there are only spectral peaks at 1KHz and 1.1KHz. Other wise, you will find other spectral peaks, notably at 1-n*0.1KHz, 1.1+n*0.1KHz, 2.1KHz, 2.1+/-0.1KHz, +/-0.2KHz etc..
"sine_all522.wma" consists of sine waves of 1KHz, 2KHz, 3KHz, 4KHz and 5KHz having same amplitude. Under ideal condition, they should create 5 equal spaced spectral peaks in an audio spectrum analyzer. For the overall system having flat response, the 5 peaks should have the same height. If it does not, the problem may be due to one or more of the pocketPC output, any external amplifier, speaker, microphone, signal amplifier, and analogue to digital converter. It is also possible for one part in the system to compensate for imperfection in another part, such as the equalizer or equalizing amplifier.
"square.wma" is a simple 100Hz pulse. It can be used to see the step response of the overall system. A stable triggering of the waveform is needed.
To use the files, select it in a MediaPlayer. Also select looping or repeating mode of playback. Then you can begin to play the sound file. Most players create an artificial silent time between repetitions. The ears can detect this easily. But the program can skip over the silent period if we choose the long-time average mode. For accurate frequency measurement, the narrow band analysis should be used. However, the wider shape of spectral peaks for wide band analysis makes peaks easy to identify and measure.
Normally, you will connect your earphone output to the audio equipment under test. Then you bring the pocketPC near the speaker of the system, and run a spectrum or spectrogram display porgram while the Media or MP3 Player is running in the background. Some Media Players amy not be able to produce continuous sound even within the time span of the sound file, which cannot be used.
All sound test files consist of stable pitch tones. They create concentrated spectral energy far above the background white noise level. Therefore, accurate measurements can be made without special noise control. For measurements with fixed pitch tones, long time averaging can be used to provide a very stable spectrum display and provides further noise rejection. A good real-time spectrum analyzer like the HandDee-SA makes this possible.
Like it? Share with your friends!
If you got an error while installing Themes, Software or Games, please, read FAQ.
Supported operating systems:
Pocket PC 2002, Windows Mobile 2003, Windows Mobile 5.0, Windows Mobile 6 Classic, Windows Mobile 6 Professional, Windows Mobile 6.1 Classic, Windows Mobile 6.1 Professional, Windows Mobile 6.5 Professional
Similar Software:
EatMemory EatMemory This application is designed to test the limits of your device's memory. In particular, to test if the HTC HD2's additional 128MB is actually usable or not.
This application will attempt to allocate as much memory as it can, OS limits notwithstanding
Microsoft Hopper Test Tool Hopper is a software test tool that simulates random user input on Windows Mobile devices providing a sometimes meaningful mean time to failure (MTTF) number. It is designed to find bugs and is not intended to run scenario tests or do "specific user things" - it is completely random
Pocket Mechanic Pro Pocket Mechanic Professional automatically repairs errors and fragmentation, cleans out clutter, makes your mobile device run smoothly and reliably, lets you manage your storage cards and data with ease, and provides you with a robust arsenal of powerful Windows Mobile maintenance utilities
MobiAccess Benchmark MobiAccess Benchmark- application is a useful tool to determine the database performance figures. It is available for free along with uploaded benchmarks from other users for comparison purposes. Comparing the benchmark results helps enquirers choose the optimal platform based on performance to develop data-enabled mobile applications
3G Test 3G Test is a useful utility to score your 3G network, and it takes 2 - 4 minutes to complete
Pocket PC Benchmark (ARM) Pocket PC Benchmark (ARM) - This is a freeware benchmark that we have developed for the german IT magazines magazines PC Professionell and PC Direkt. The app measures the speed of the Pocket PC from different points of view: calculation, heap management, graphics, data throughput ... The second focus is the measurement of the battery
VSBenchmark 2007 (PPC) Vsbenchmark 2007 is a free graphic benchmark that tests your graphic performances. Vsbenchmark boosts the limits of the classic 2D graphics using the last visual effect technologies. You can compare your results with other devices.
Vsbenchmark 2007 generate automatically graphics result files
Mobile ScreenTester Mobile ScreenTester is excellent for testing your PDA''s display to quickly find dead pixels. It is simple to use and it is also a very thin application and it is FREE!
NBenchmark .NET framework to create benchmarks to measure HW and SW performance, identify system bottlenecks, optimize code, and automate performance testing
GXmark GXmark is a free benchmarking utility to evaluate and compare gaming performances of different devices.
What's New in This Release:
· v1.1f New icon, now correctly displayed on ppc2000 & ppc2002 devices
· v1.1e Flipscreen calculation bug fixed
· v1.1d Now supports @migo and h5450
· v1
Other Software by developer «Display Research Laboratory»:
Pocket Spectrogram and Spectrum Analyzer -PSSA (WM PPC) Pocket Spectrogram and Spectrum Analyzer -PSSA (WM PPC) generates real-time scrolling spectrogram or fading frequency spectrum display on the pocket PC. Color coded scrolling spectrogram is perfect for language therapy, phonetic & advanced singing practices. The fading frequency spectral analysis provides clear contrast of spectral strength for phonetic drills
HandDee GTuner HandDee GTuner is a mobile phone guitar tuner software for guitarists and musicians. An ergonomically designed smart pitch pointer enable quick and accurate reading of pitch error on the screen of UIQ Symbian phone. The clarity and convenience finds no rival in standalone tuners
Visual Guitar Tuner Visual Guitar Tuner - Visual Guitar Tuner is a comprehensive chromatic guitar tuner for Pocket PC users. It provides three tuning selection standards with adjustable A4 frequency from 435Hz to 445Hz. It also provides pitch pipe tone output and sound texture reference
HandDee GTuner guitar tuner S60 / N-Gage 36xx HandDee GTuner guitar tuner S60 / N-Gage 36xx is a mobile phone guitar tuner software for guitarists and musicians. An ergonomically designed smart pitch pointer enable quick and accurate reading of pitch error on the screen of UIQ Symbian phone. The clarity and convenience finds no rival in standalone tuners
PhonTuner (SP) professional singing & guitar tuner PhonTuner (SP) professional singing & guitar tuner is an advanced guitar tuner that can also be used to tune violin, piano, and even vocal practice and singing like barbershop quartet. It is the FIRST real-time precision tuner to detect off-tuned notes in continuous performance and a cappella singing
Phonature Music Visualizer Phonature Music Visualizer - The Phonature Music Visualizer (PhonViso) FREEWARE is the first music visualizer on pocket PC. With its intelligent algorithm calculation, PhonViso creates real-time patterns that response to music. User can choose between 4 different modes - Sound Texture, Kaleidoscope, Diamond and auto change
HandDee GTuner (SP) guitar tuner HandDee GTuner is a mobile phone guitar tuner software for guitarists and musicians to tune their guitar. An ergonomically designed smart pitch pointer enable quick and accurate reading of pitch error on the screen of your smartphone as you tune the guitar. The clarity and convenience finds no rival in standalone tuners
HandDee-SA (OS5) Spectrum Analyzer HandDee-SA (OS5) Spectrum Analyzer - 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
HandDee-SA (WM PPC) Spectrum Analyzer HandDee-SA (WM PPC) Spectrum Analyzer - The HandDee Spectrum Analyzer generates real-time fading frequency spectrum or scrolling spectrogram on the pocket PC. An intelligent wave monitor window gives you a stable waveform display. Smart peaking envelopes are provided for music monitor and audio system calibration
