Приложения разработчика jjbunn в Android Market

Randomness (v. 1.5)

jjbunn опубликовал приложение 2010-12-22
(обновлено 2010-12-22)

Randomness flips a coin, rolls a pair of dice, or selects a random Web page for you from the millions available. It's all very random. Suggestions for further randomness e.g. lottery numbers, are welcomed.  

V1.5 Initial random version number

Sensors (v. 2.3)

jjbunn опубликовал приложение 2010-11-27
(обновлено 2011-09-19)

V2.2: Add zoom in/out buttons and Mag Field on/off button for Monica

Simple application showing the output from the 3-axis accelerometer and magnetometer. Scales variable between 0.01 and 20g for acceleration.

AudioCaps (v. 1.8)

jjbunn опубликовал приложение 2010-11-07
(обновлено 2013-04-24)

Prints a list of the supported recording and playback formats on your Android device.

v1.8 minor changes
v1.7 output includes Android Build.MODEL string
v1.6 allows to send results as an email
v1.5 n/a
v1.4 confirms play/record capability by send/receive of samples to the audio hardware

Questions: email jjbunn@gmail.com

Pianoid Plain Piano (v. 1.3)

jjbunn опубликовал приложение 2010-08-29
(обновлено 2010-08-29)

Two octave piano. Single notes and two note chords via multitouch.

It helps if you have small fingers :-)

v1.3: Fix for out of range key
v1.2: initial release.

Comments/suggestions welcome.

Metaloid Field Detector (v. 2.1)

jjbunn опубликовал приложение 2010-08-22
(обновлено 2011-02-11)

Uses the built in magnetometer to show the magnetic field near the Android. Three metering speeds: Fast, Medium, Slow plus Zero offsets, two scales.

Use as a metal detector: pass the Android over a ferrous metal object and observe the needle behaviour.

Accuracy determined by phone hardware.

FAQ:

Q: What do the speeds mean?
A: Fast, medium, slow refer to how quickly the meter needle moves in response to a change in the magnetic field.

Q: What is "zeroed"?
A: Zeroed and unzeroed are for looking at the difference between the value when the button was pressed and now ... For example, if you are in unzeroed mode, and the meter reads 50, then you press the button the meter will now read zero, effectively subtracting 50 from the reading.

Q: What are "coarse" and "fine"?
A: Coarse and fine refer to the meter scale ... One reads from zero to 50 microTesla, the other to 500 microTesla.



v2.1 Cosmetics & ad supported

Ghostroid Paranormal Detector (v. 1.11)

jjbunn опубликовал приложение 2010-08-16
(обновлено 2012-01-31)

Android version of Pocket Ghost paranormal detector. Sub/supersonic and audible IIR filters calculate the ParaNormal Quotient(PNQ) at your location.

An essential tool for the aspiring or professional ghost hunter!

Theory of Operation

It has been reported that paranormal activity is evidenced by sounds inaudible, or barely audible, to the human ear. Animals, whose hearing is more acute at higher frequencies than ours, are able to detect supersonic sounds, generally above 12-15 kiloHertz or so. For example, dogs are reported to behave oddly during supernatural events. Sounds of very low frequency, less than a hundred Hertz or so, are normally felt rather than heard by humans. The built-in microphone circuitry in most handheld devices is designed to detect frequencies in the audio range, but there is some residual response from the circuitry at the very low (subsonic) and very high (supersonic) frequencies.

Ghostroid uses fast software-based Infinite Impulse Response (IIR) filters to measure the level of sub- and super-sonic sound pressure waves arriving at the microphone. It also measures the audible sound level. The three ranges are shown on the Ghostroid display via three meters, which move dynamically and are updated several times a second. The Para Normal Quotient (PNQ) is calculated from a formula that sums the sound levels in the sub- and super- sonic ranges, and subtracts the audible range value. This yields a number which increases as the sub- and super- frequencies (which are difficult or impossible for us to hear) increase, as compared to the audible frequencies.

The PNQ value is shown by a set of concentric bands at the centre of the display. High PNQ values may be caused by a variety of events: Low frequency rumbling (e.g. from heavy trucks or machinery), High frequency noises (e.g. dog whistles, or keys jangling) as well as Supernatural phenomena (please don't drop your Android when you run away in fright!)

Ghostroid is a port to Android of the well-established "Pocket Ghost" application for Windows Mobile. Although I personally remain sceptical about the existence of paranormal activity, and the effectiveness of this application to detect it, I have received several reports over the years of Pocket Ghost being successfully used by paranormal investigators. Here are a couple of quotes:

1) "I have used the pocket ghost program on my I-mate Jasjam and in all cases the Sub-sonic and Super-sonic reading peaked at 85 to 90 and did not drop down until the visions (or what ever they were) had gone."

2) "I have seen your program successfully used by a professional parapsychologist during an investigation in London."

3) "I am a member of several paranormal groups and investigate the most paranormally active sites within the U.K. On one such investigation a parapsychologist was using your 'Pocket Ghost' to great effect."

SoundForm Signal Generator (v. 2.4.3)

jjbunn опубликовал приложение 2010-08-13
(обновлено 2011-01-20)

V2.4.3: Minor fixes.

NOT RECOMMENDED FOR GALAXY S!

Soundform generates White and Pink Noise, Sine, Square, Triangle, Ramp waves and Impulses. Uses multiple cycled buffers, refreshed randomly, so ensuring truly random White/Pink noise. See website for more details.

Questions or problems? Please Email me!

SPL and Spectrum Analyser (v. 2.9)

jjbunn опубликовал приложение 2010-08-10
(обновлено 2011-01-11)

V2.9: Improved stability on rotate.

SPLMeter shows SPL (deciBels) of the Android's mic signals, and their frequency spectrum. The meter has three speeds: Fast, Medium and Slow. Shows peak envelope and frequency of maximum intensity, and clipping. ISO 1/3 Octave bars and Spectrogram.

HeartyII (v. 1.0)

jjbunn опубликовал приложение 2010-08-09
(обновлено 2010-08-09)

Records audio samples from the mic or headset. Data can be saved as WAV files (8000cps, 16bit PCM, Mono) on the SD card. The mic data can be looped back to the speakerphone or headset (to allow listening while recording). This app is a prototype intended for heartsound monitoring.

v1.2 : fix audio conflict startup issue