Android :: Way To Get Frequency Of Gps Signals?
Jul 17, 2009
I 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?
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Jan 31, 2009
I 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?
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Nov 7, 2009
I have a doubt I have been trying to solve since several days but still giving me troubles. Is there a way to detect when the GPS has lost signal (when I drive through a tunnel for example)? I tried to use te on Status Changed listener because I thought that the "temporarily unavailable" status was associated to a lack of signal but it doesn't seem to work well. I also tried to make a count with low precision locations rounds to trigger but it also fails.
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Jun 13, 2010
My Eris rebooted randomly. I have no phone signal and cannot make calls. When ever I hit the 'Phone' button, I get a message that says "The process android.process, acore has stopped unexpectedly. Please try again". Any clues? I have not updated it.
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Sep 13, 2010
How is it possible to increase reception signals please?
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Nov 25, 2010
Is there an app to watch over the air digital TV signals on a droid?
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Oct 12, 2010
I was wondering whether it is possible to detect CB Radio signals with Android phones. It just needs to detect the presence of and would not need to transmit.
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Jun 2, 2010
My application calls Runtime.exec() to launch an executable in a separate process at start up time. I would like this child process to get killed when parent activity exits. Now I can use onDestroy() to handle regular cases, but not "Force quit", shutdowns from DDMS, or kill from the console since those don't run onDestroy(). The addShutdownHandler() does not seem to be invoked in these cases either. Is there any other hook or signal handler that informs my activity that it's about to get terminated? As an alternative is there a way to have the system automatically kill the child process when the parent die?
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Jul 21, 2009
I 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?
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Feb 12, 2010
I have a strange doubt:
Is it possible to intercept key presses of the hands free mic/headset(whatever it is called) of an Android mobile device?
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Nov 25, 2010
does anybody know if 4G signals will work with the Motorola droid x from Verizon Wireless.
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Aug 4, 2010
Got my phone for a while already and never had a problem with my internet connection (3g signal), every where I go around my area I had full bars and full internet. Now that I did the update to froyo 2.2 and my flash wasn't working right, I had to do a factory reset and everything work perfectly and I had the internet running normal, but after later than day I start loosing signal on locations were I usually have full signal, turn of my phone and took out the battery and wait and waited and been doing this for a while. So connections comes on and off, when its on its about 5 to 20 seconds before my internet connections goes down after. Is the task killer messing up my connection even though, I always had a task killer before the update and never lost signal or connection?
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Jul 24, 2010
I had horrible lag ever since I got my vibrant from market, web, email everything. I even thhought about returning it, BUT I solved my problem(at least mine). I was at t-mobile vibrantforum and one post saying that factory reset will fix this problem. I gave it a try, and BANG! My phone is lag free. If you have lag problem, give it a try. I know its pain, reinstalling all the apps, but having lag all the time is much bigger pain. Also, I had trouble getting decent 3g signal, and I unchecked data roaming, and I am getting much better 3g signal too.
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Mar 25, 2010
I'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.
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Jul 28, 2010
Any app to check that the cpu frequencies are being set to low values that I selected from setCPU while the screen is off ?
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Feb 11, 2009
I 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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Jun 9, 2009
I wish to obtain the frequency of an input signal from the mic. Can anyone send me some pointers on how this may be accomplished.
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Oct 3, 2010
Is there any option that makes it so the phone connects automatically when its required? For example, I open up the internet browser or an app that requires a connection and it starts the Internet connection without me having to do it manually? And is there a way of it disconnecting automatically when the connection is idle? Also, on my phone, when I am connected, I only ever see H, E and G but never 3G. I am on o2 in the UK, can anyone tell me why I'm not seeing 3G?
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Oct 9, 2010
Is 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.
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Dec 13, 2009
It's "booting up" even though I haven't even touched it. Seem's like it rebooted itself. Then once it's up I get no Cell signal at all. Wifi worked but no Cell Signal. As a test I tried making a call to confirm and it says something like "Phone not registered" I now reboot the phone myself, and it's ok now.
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Jul 21, 2010
My 3 month old hero ( 3 UK - 1.6 ) has just stopped detecting ANY wi-fi signals. I haven't rooted. I have removed the battery and removed then reinstalled the we-fi application. I toggle on/ off / on the wi-fi and the phone indicates this as being on. My next idea is to factory reset the phone and if that does not work to send it back to 3.
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Apr 29, 2010
Does anybody have experience with network extenders? Would it help preserve battery life in poor signal areas?
Also, has anybody used Sprint's Airave network extender? I get terrible service here in college, but back home (Suburban Chicago) Sprint has great 3G and even WiMax. My 2-year with Sprint is up in October, and with the EVO 4g coming out (+WiMax back home) I was wondering if an Airave would help my reception woes during the school year.
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Aug 7, 2010
I've had the Desire a few weeks now and I love it. My problem is that when I surf the mobile internet. I am only getting a GPRS signal? i.e., I am only getting the 'G' symbol and the arrows in the notification bar when I am surfing. I've been various parts of the country surfing the internet but never ever seem to be able to get anything other than GPRS? - I keep reading about 3G,EDGE and HSPDA but it just doesn't seem like my Desire will connect to these, just the bog standard GPRS? Any settings I need to change?
Cos I am thinking that my web pages could be loading a lot quicker. Its just annoying because you read that 3G covers most of the UK, yet everywhere I've been going doesn't seem to show anything other than the single 'G' on the notification bar. (One interesting thing to note is that I downloaded the 3G watchdog app and that app shows you a little 3G notification in the upper bar - strangely enough this shows I have a half decent 3G signal, yet whenever I am surfing I am only getting GPRS).
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Oct 17, 2010
I 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.
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Jun 11, 2010
Is there any Java API for that? How can I read this information.
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Sep 17, 2010
I 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?
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Aug 23, 2013
Mobileuncle 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?
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May 13, 2010
I'm on the Orange network and am having problems with the 3G network. Various apps (Facebook, Market, Head to Head & Internet Browser) will only download data when there is a connection to the HSDPA signal.
The 3G signal has shown as 3 or 4 bars but will consistently not download any data. Once the HSDPA signal is found, then the download starts. This can be frustrating as there isn't always a HSDPA signal.
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Aug 4, 2010
Is there a way to tell if u are picking up a signal?
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Mar 28, 2012
Once upon a time I used another website to customize my new Ascend. Long story very short, I messed it up. I am pretty sure I deleted some stock stuff, and since my computer that had all of the backups on it has died, I have no way of getting it back.
I've tried flashing back to stock, I've tried flashing to different roms, I've tried doing a factory reset, I've even tried loading the stock zipped rom from the sd card. Of all the methods that I tried, the only one that doesn't hang on the android screen is flashing a new rom - so I'm using CM7 for now. Everything else kills the phone, it never boots past the android screen.
I just went thru the gauntlet again, trying to "fix" my phone, but nothing worked except flashing CM7. My camera hasn't worked since I started messing with this phone when I first got it. Now, all of a sudden, my internet is having issues.
I have tried downloading the camera.apk, but it doesn't seem to do anything - is there something I'm supposed to do other than stick the apk file in the sd card root?. I still can't use the bar code scanner, or a shopping list scanner thingy - everything says the camera had an unexpected error and/or the device failed to give access to the camera.
Going to RoM Manager, trying to download a different RoM (I have paid for the premium) and I get the you must have CWM installed message. Okay, I wiped everything, that makes sense. Click the install and either nothing happens or I get the message can't get an internet signal. The browser will connect, if I click retry, retry, retry 20 times.
I really dont know if I can justify the cost of a new phone, seeing as I dont really need it - I just want it. Need fixing the signal and camera on this one? FYI, the 3g icon on the status bar shows connected.
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