Android :: How To Get Accelerometer Frequency Output?
Feb 11, 2009I wanted to get the frequency of accelerometer output. How many readings can I get per second? And to what precision do I get?
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Android :: Discover Frequency Of Recored Audio / Get Raw Frequency Information From Mic?
Jan 31, 2009I am trying to discover the frequency of recored audio. I am kinda new to multimedia programming (I am very new to android). Is there a way to get raw frequency information from the Mic?
View 2 Replies View RelatedAndroid :: Sounds + Accelerometer - Weird Accelerometer Values - BUG?
Jun 9, 2009I am developing a game. In which the user controls movement using the accelerometer. Sounds effects can also be enabled. However when laying the phone flat down and playing the game without the accelerometer gives nice 0,0,0 values. However when play WITH SOUNDS on, i get a buch of weird values: while the phone is NOT moving.
This is really a big bug that makes life hard for Game Developers. I tried to take an avarge of the last 5 values from the sensor.. but this is not enough.. The harder the sounds plays: the higher the weird sensor values. When using the headphones: almost no weird values. Seems that sounds interferes with the accelerometer sensor.
General :: How To Output Android Camera Output To PC Through WiFi Or Internet
Feb 6, 2014I want to output Android's camera output to a PC through Wifi or Internet.
I cant find a suitable app for the purpose. I did try to find one.
Closest I came to was MirrorOp Sender, but it shares screen?
I have a Galaxy S3 I9300 and a Galaxy Mini S5570
Android :: Way To Get Frequency Of Gps Signals?
Jul 17, 2009I already know the frequency for the carrier signal and all the technology around gps. The question i have: Is it somehow possible to get the received frequency of the signal? I am asking, because i want to derive some functions from doppler navigation for which i need the received frequency of the gps signal, in order to compare it with the carrier frequency. I know, that this is very hardware related, are there any possibilities to grab the information i want to?
View 2 Replies View RelatedAndroid :: API Can Control CPU Frequency?
Jul 21, 2009I tried use ADB shell to execute "echo 528000 > /sys/devices/system/ cpu/cpu0/cpufreq/scaling_max_freq" to set CPU frequency successfully. But i can't find any API for applet to control CPU frequency. Have any API for this function? or Have any API that has execute shell command capability?
View 2 Replies View RelatedAndroid :: AudioRecord On Emulator With Frequency 8 KHz
Mar 25, 2010I'm doing a voice recording using AudioRecord class and the main requirement that the frequency must be 16000 Hz. I'm using only emulator in development process for now and met the problem that I can't set frequency more than 8000, otherwise I get bufferSize -2, and can't create instance of AudioRecord with such buffer. Thank you to Szabolcs Vrbos, he told me that this problem is only with emulator and several Samsung phones, device can record with higher frequency.I need a word from Android engineers that I will be able to record voice with 16000 Hz frequency on for instance HTC Hero (Android 1.5)or similar device with os 1.5 or higher.
View 2 Replies View RelatedAndroid :: Need App For Logging CPU Frequency / While Screen Off
Jul 28, 2010Any app to check that the cpu frequencies are being set to low values that I selected from setCPU while the screen is off ?
View 1 Replies View RelatedAndroid :: How To Obtain Frequency From Mic On Phone?
Jun 9, 2009I wish to obtain the frequency of an input signal from the mic. Can anyone send me some pointers on how this may be accomplished.
View 2 Replies View RelatedAndroid :: Setup Update Frequency On Gmail App?
Oct 9, 2010Is there a way to set update frequency on the gmail application? I don't want the gmail app to constantly check for updates and drain battery.
View 4 Replies View RelatedAndroid :: Guitar Tuner - No Public API For Frequency Analysis
Oct 17, 2010I am looking for some help. I'm new to android, and java development. I've got a pretty good handle on the basics, but I'm having an issue figuring out some more advanced operations. I'm working a guitar tuner, which is a stepping stone to a chromatic piano tuner. There is no public API for frequency analysis, so I'm thinking I need to write into code a Fast Fourier Transform, and I'll assume I need to import a different package for this. Once I display the frequency of any given note, I need it to reference it's offset to a pre-measured Mhz. There is alot to write, I'm aware, but my first step is to try to figure out HOW to get the frequency, and display it in the UI.
View 12 Replies View RelatedAndroid :: Read Cpu Frequency On Droid Device / Java API For That?
Jun 11, 2010Is there any Java API for that? How can I read this information.
View 2 Replies View RelatedAndroid :: Possible With Droid / Java To Change Frequency Of A Soundfile?
Sep 17, 2010I try to change the frequency of a single soundfile. I managed to do that in android with the SoundPool thing. But the result sounds really bad.
So I stepped about the Fourier Transformation - but I am not sure if this is what I am looking for.
I want to load a single file and change the frequency of that file every time that file is played. So I can create melodies out of one tone. Is that possible with android/java?
General :: Can Change UMTS / WCDMA Frequency On Android?
Aug 23, 2013Mobileuncle shows that my device is only on WCDMA 2000 with other frequencies grayed out...particularly WCDMA 850 which the one I want to access to get HSPA, right now only getting 2G.
It might be just a APN problem even though I've changed the APN several times with no results, so I'm wondering about changing the Frequency of the WCDMA, or accessing all frequencies?
Android :: Change Clock Frequency In Droid / Some APIs In Linux?
Nov 21, 2010I'm a newbie developer in Android.
I want to make an app like SetCPU that can manipulate cpu frequency in Android.
But I couldn't find some related APIs or materials.
I want to know following two things sincerely.
1) Are there APIs to change cpu frequency in Android?
2) If not, are there some APIs in linux?
Android : Determine Audio Frequency Of Sound Received Via Microphone
Oct 11, 2010I am trying to understand how to go about determining the frequency of various sounds captured on the phone via microphone. I am attempting to display a graph plotting the frequency of the note.
View 1 Replies View RelatedAndroid :: Pure Calendar Widget Updates Instantly Despite Update Frequency
May 3, 2010I started using Pure Calendar today and love it.here is a "Select Update Frequency" setting that can change from 6 hours to "When Calendar is Modified."I left mine on 6 hours to begin with, but I have noticed that when I modify my Exchange or my Google Calendar (on my phone OR on my computer), the Pure Calendar widget updates almost instantly.Anybody know why? Is it a bug in the Widget? Or is it supposed to update the Widget instantly despite being set to 6 hours?
View 4 Replies View RelatedAndroid :: Accelerometer For Gaming
Jul 10, 2009I'm designing a game for Android and I would like to use the accelerometer for some aspects of control. Has anyone come across a tutorial or example for something like this?
View 1 Replies View RelatedAndroid :: How Do I Readjust Accelerometer?
Jan 15, 2010My accelerometer is not reading the angle of the phone right. When I play Teeter I have to keep the phone on a sharpe angle to keep the ball still, and I feel I have to rotate it extra to go into landscape mode. Now the question is... how do I readjust the accelerometer?
View 6 Replies View RelatedAndroid :: Example App That Uses Accelerometer Sensor?
Jan 23, 2009Where can I find a simple example application that uses the Accelerometer Sensor?
I've seen the Open Intents applications, but I'd rather use the raw Android API, at least until I understand it a little better. I'm surprised at the lack of documentation.
Android :: How To Use Accelerometer Detection
May 20, 2010I want to know how to calculate the accelerometer movement.When i place the mobile horizontally in idle state and similarly when i place the mobile in hands,So there accelerometer value change when it is place horizontally or while it is in hand vertically.How To Identify them,Any Sample Codes will be useful.
View 1 Replies View RelatedAndroid :: Get A Single Accelerometer Value?
Aug 23, 2010I'm working on adding a calibration feature to an accelerometer-driven game. For the calibration, I need a single value from the accelerometer. Should I register a listener, get the first value it gives me, and unregister it, or is there a better way to get just one value?
View 2 Replies View RelatedPop-up Texts At Set Time Frequency
Nov 1, 2012So, I want an app where I store different texts, which then later pops up when I want, like every 24hr or every morning. I would like to make this app myself because I want it simple and to understand it completely.
I am not new to programming, but I don't know this language. Do you think this would be hard for me, to create this app, but with "full guidance", .
General :: App For Logging CPU Frequency?
Oct 5, 2012Is there some app that would show me cpu frequency being used over a period of time in, say, a graph view? I want to see what freq is my phone is using while the screen is off.
View 1 Replies View RelatedAndroid :: Accelerometer Direction Of Shake?
Apr 8, 2010I've been playing with the data given by the accelerometer,trying to work out how I can gauge a shake from front to back or side to side. This all seems straightforward enough.But I'd love to know the direction of the shake. So, if the user is shaking backwards and forwards, I want to know if the device is moving away from the user, or back towards him/her. I can't find any way of telling this.
View 6 Replies View RelatedAndroid :: Building Speedometer Using Accelerometer
Oct 17, 2010I'm tinkering around with trying to build a speedometer using only the accelerometer for use when I go snowboarding. I can read values from the accelerometer but I'm not sure how I would derive the velocity. I was thinking of taking the square root of (X^2 + Y^2 + Z^2) where X, Y, and Z are the values reported by the accelerometer in each axis but that only would only give me the amplitude of acceleration at any given instant. I could multiple that by the sampling frequency to get my instantaneous velocity but this approach fails when I'm moving at a constant speed.
View 2 Replies View RelatedAndroid :: Accelerometer Gravity Components
Jun 7, 2010I know this question is definitely solved somewhere many times already, please enlighten me if you know of their existence,
Quick rundown:
I want to compute from a 3 axis accelerometer the gravity component on each of these 3 axes.
I have used 2 axes free body diagrams to work out the accelerometer's gravity component in the world X-Z, Y-Z and X-Y axes. But the solution seems slightly off, it's acceptable for extreme cases when only 1 accelerometer axis is exposed to gravity, but for a pitch and roll of both 45 degrees, the combined total magnitude is greater than gravity (obtained by Xa^2+Ya^2+Za^2=g^2; Xa, Ya and Za are accelerometer readings in its X, Y and Z axis).
More detail:
The device is a Nexus One, and have a magnetic field sensor for azimuth, pitch and roll in addition to the 3-axis accelerometer.In the world's axis (with Z in the same direction as gravity, and either X or Y points to the north pole, don't think this matters much?), I assumed my device has a pitch (P) on the Y-Z axis, and a roll (R) on the X-Z axis. With that I used simple trig to get:
Sin(R)=Ax/Gxz
Cos(R)=Az/Gxz
Tan(R)=Ax/Az
There is another set for pitch, P.Now I defined gravity to have 3 components in the world's axis, a Gxz that is measurable only in the X-Z axis, a Gyz for Y-Z, and a Gxy for X-Y axis.Gxz^2+Gyz^2+Gxy^2=2*G^2 the 2G is because gravity is effectively included twice in this definition. Oh and the X-Y axis produce something more exotic I'll explain if required later.From these equations I obtained a formula for Az, and removed the tan operations because I don't know how to handle tan90 calculations (it's infinity?).So my question is, anyone know whether I did this right/wrong or able to point me to the right direction?
Android :: Accelerometer False Detection
Oct 27, 2009I have a code snippet to detect accelerometer movements. It works some times by properly detecting slight movements, but sometimes it detects movements when I kept my device idle too. Are there any problems with built-in accelerometer detection on Android?
I use an HTC G-1 device. My code snippet is below. How do I resolve it so I can detect small device movements but not detect anything when the device is idle?
CODE:..............
Android :: How Can I Simulate Accelerometer In Emulator?
Oct 13, 2010i dont have an android phone write now.But in my application i need to use accelerometer values..so i need an a simulator capable of it.
View 2 Replies View RelatedAndroid :: Low Accuracy Of The Accelerometer Sensor?
Jul 9, 2009We are writing an application that uses acceleration sensor data to plot phone's movement in 3D. We are finding gross inconsistencies in the actual data output by the sensor. Also, sampling rates vary greatly from 8 to 200 millis. (using System.currentTimeMillis())
Specifically, when we try to draw a circle with G1 flat on the table all the time (filtering out gravity accel 9.8), most of the time we would get a plot of phone's position that is not a circle at all. Lots of times, it would be close to a straight line. Sometimes, it would start drawing an arc, but would not close the circle shooting off in a random direction.
We tried to eliminate the time variable, by substituting a constant time sampling rate (10 millis) to calculate phones position, but the result was very close to what we had before (shapewise). Also, the acceleration in Z direction when the phone is displaced lying flat on a table (XY plane) varies too by +/- 2 units which is a lot.
I do not think it is an error in our code, as we have checked it many times. If there were an error indeed and the accelerometer worked properly, we would see a consistently wrong depiction of the phone's movement. Unfortunately, repeating the same movement (circle) would produce sometimes wildly differently shaped plots.
It all comes down to us wanting to know if that is indeed the case that the G1 accelerometer is very unreliable and inconsistent device when used for more or less precise measurements? Is there some documentation/facts paper that would tell us just how reliable accelerometer is?