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:
XGuru An overclocking utility for Intel XScale processors. Compact yet effective
Connection State Checker Connection State Checker - This little program solves a problem. If you use direct push you need a permanent connection. This is achieved using activesync (direct push) or setting a connection as always on.
Problem to solve:
Many times a connection is established minutes or hours ago. But it doesn't work correctly
InternetTesterer InternetTesterer allows you to check the status of your current internet connection. You can also manually connect to a GPRS (or other) network. The program downloads the file 'CeBeans.com/Connect.txt' from your current internet connections and displays a status. You can use this to make sure you are connected to the internet
GLBenchmark (Windows Mobile - OpenGL ES CM) GLBenchmark (Windows Mobile - OpenGL ES CM) - GLBenchmark 1.0, the high performance mobile benchmark for OpenGL ES 1.0 and 1.1 environments contains:
GLBenchmark Pro ES 1.0 and 1.1
Complex T-Rex fight gaming scene
Powerful real-time rendering techniques like shadows, particles, skinning, etc
OpenGL ES 1
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
Test OpenGL and OpenVG Test OpenGL performs different tests to show the 3D rendering performance on Windows Mobile devices. It cycles through all tests by rendering 500 frames
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
VibrateButton VibrateButton allows you to depower or power the vibrate servo on your PocketPC. You can use this to test the vibrate function as well as turn off the vibrate if it's locked on another program
3D Benchmark 3D Benchmark - The real 3D benchmark utility. Based on new DYNAMIX 3D Engine, it will push your Pocket PC to it's limit to find out what it really can do
Pocket PC Benchmark (SH3) Pocket PC Benchmark (SH3) - 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
Other Software by developer «Display Research Laboratory»:
Phonviso (Phonature Music Visualizer) Phonviso (Phonature Music Visualizer) - Description:
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
WhisRaider WhisRaider - WhisRaider is the world's first whistle controlled game for Pocket PC. It is similar to the classic Space Invaders but requires more skillful control by you and without the protection of castles.
Move your fighter with the pitch of your whistle and use the UP button to fire or use autofire mode to fire upon receiving your whistle command
HandDee GTuner (WM PPC) guitar tuner HandDee GTuner (WM PPC) guitar tuner is a guitar tuner software for guitarists and musicians to tune their guitar. It uses the same noise rejection and quick note detection technique of our highly successful PhonTuner singing software with the addition of alternate guitar tunings and string position indicator
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 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
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
Live Puzzle Live Puzzle is a highly interactive and custom selected puzzle game. Whole new experience in live gaming. It scrambles your world before you. Choose from 2x3, 3x3, 4x4 and 4x5 puzzle pieces. Your goal is to restore your world as soon as possible. See funny things such as a person talking with own mouth next to the ear
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-SA (UIQ) Spectrum Analyzer HandDee-SA (UIQ) Spectrum Analyzer - 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
Pocket Spectrogram and Spectrum Analyzer (PSSA) The Pocket Spectrogram and Spectrum Analyzer (PSSA) 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
