Android :: Voice Activity Detection In Phone
Oct 15, 2010
I am writing an application that will behave similar to the existing Voice recognition but will be sending the sound data to a proprietary web service to perform the speech recognition part. I am using the standard MediaRecord (which is AMR-NB encoded) which seems to be perfect to speech recognition. The only data provided by this is the Amplitude via the getMaxAmplitude() method.I am trying to detect when the person starts to talk so that when the person stops talking for about 2 seconds I can proceed to send the sound data to the web service. Right now I am using a threshold for the amplitude that if its goes over a value (i.e. 1500) then I assume the person is speaking. My concern is that the amplitude levels may vary by device (i.e. Nexus One v Droid), so I am looking for a more standard approach to this that can be derived from the amplitude values.
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Nov 8, 2010
I am currently working on an experimental camera app. I'm looking into implementing face detection at the moment and am currently weighing up my options.I have considered the OpenCV port available for android and using their face detection functions, but from demos I have seen of previous implementations the camera seems to lag a lot.Considering the camera on the HTC desire has face detecting, I know it must be possible to get at least a semi decent face detection system in place. I was just wondering if anyone had an opinion on how I could get the best results.Using an available library? Implementing a particular algorithm myself?
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Jul 1, 2010
I've been trying out Google Sky Map and it seems a bit off. I hold my phone in landscape mode and point it at the moon as if I were going to take a picture of it. The application shows the moon about 5-10 degrees off from where it actually is. Is this just the accuracy of the compass and orientation detection of the phone?
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Nov 14, 2010
I'm sure its been discussed and all but I think that the voice recognition software is capable of being much more advanced.There should be a way to just give your phone a voice command without having to manually open an app. It probably would have to be running in the background the whole time, analyzing everything it hears, so it may use a lot of battery and cpu.therefore it may be easier to have a starter phrase to tell it to listen more carefully. for example: say the said app is running in the background,listening to every noise, but it wouldn't begin to really analyize until you say something like; "hey, phone!" or "yo, droid!" (or whatever tag phrase). I don't know what would have to go into an app like that for it to work but hey, if an app like that was designed, then I think the android would be a really smart smartphone. In the end thanks for all the awesome apps you guys are already developing. be sure to tell me when someone develops something like that though.
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May 5, 2009
On my Google dev phone there is a problem with the new 1.5 version in combination with an official HTC adapter cable YC A300 and 3.5mm earphones. Android doesn't recognize the earphones (it worked on 1.1!). Android still recognizes the HTC earphones with ExtUSB.
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May 20, 2010
I 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.
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Jul 29, 2010
I finally changed the voicemail system on my Hero from Sprint's "visual voicemail" (which is misleading because it doesn't transcribe voicemails) to Google Voice. It's nice to see my transcribed voicemails now. However, when I actually want to hear them (if the transcription didn't work well), it only comes through the external speaker; the speaker on the back of the phone. I went into Google Voice settings and under "Voicemail Playback" I tried the only two options: "Play via Handset" and "Play via Speaker." Unfortunately, both play through the speaker phone speaker. How do I change it to the phone speaker? I also can't adjust the volume, so the whole world hears my voicemails through the external speaker.
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Apr 30, 2010
I am pretty new to android. I have a use case where I need to detect a shake and show some images in my application. Can I test shake functionality on android emulator ? What are the other alternatives apart from testing it on a real phone ?
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Jun 6, 2010
Is this possible? How do i do it? I want to learn but dont know where to begin even
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May 30, 2010
As part of an application that I'm developing for Android I'd like to show the user an edge-detected version of an image they have taken (something similar to the example below).To achieve this I've been looking at the Sobel operator and how to implement it in Java. However, many of the examples that I've found make use of objects and methods found in AWT (like this example) that isn't part of Android.My question is then really, does Android provide any alternatives to the features of AWT that have been used in the above example? If we were to rewrite that example just using the libraries built into Android, how would we go about it?
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Oct 27, 2009
I 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:..............
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Sep 23, 2010
I have an itemizedOverlay extended and I want to increase the hit detection on the OverLayItem's if this is possible?
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Apr 27, 2009
I'm trying to product a binary that is compatible with 1.1 and 1.5, but i'm having trouble with the ViewSwitcher class behaving different. I'd like to create a wrapper for it, but I need a way to programatically detect the api level at runtime.
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Nov 5, 2010
Has anyone ever used the API for face detect in their android program?More simply stated, can I have a java class that pulls up the camera, scans a person's face and returns parameters back into the program?
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Oct 1, 2010
In my android app I call the voice recognition in my onCreate method of my startup activity. I have made it a preference to start up with the voice control or not. However, the app takes about 5-7 seconds to load when voice recognition is on. When it is off, the app starts almost instantly. Below is sample code, I have added Free_Form, max_results 1, and a custom prompt to mine.Why would calling the normal android speech recognition take sooo long to load in my OnCreate method?
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Jul 29, 2010
On Froyo, we found that some new "Task Manager" apps are now using the ActivityManager.killBackgroundProcesses() to kill apps. When this happens, Intent.ACTION_PACKAGE_RESTARTED is no longer fired. How can I find out that my application has been killed? I tried to start a service, and I do see this message printed in logcat:
W/ActivityManager( 2426): Scheduling restart of crashed service com.example.android.apis/.app.RemoteService in 20000ms
However, the service is never restarted as advertised, if the app is killed using the killBackgroundProcesses API. (If I go into adb shell and kill the service process, the service will indeed be restarted ...) This looks like a bug anyway, because the notification created by the app is no longer removed like in eclair (the StatusBarService, and a bunch of other system services, depend on the Intent.ACTION_PACKAGE_RESTARTED broadcast).
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Apr 2, 2010
I'm working on a soundboard, however I've got a problem when it come to drag the finger over the screen to play the sounds for the buttons I drag the finger over.Do anyone know how I can detect when a finger enter a button and not click the button?
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Apr 12, 2010
Really general, very new to bluetooth. Can we have one android device broadcasting a simple 'hello' bluetooth network (maybe a radius of just a few feet) - then when other android devices come into that area, reply with a 'hello' back? The client devices moving through the 'hello' radius wouldn't need to be always be checking for presence. I'd let the user open an app and check for bluetooth networks nearby. If they find one of these hubs, they can then choose to broadcast back a hello.Is that at all possible? Any general info would be great.
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Nov 29, 2009
I am currently working on a collision detection routine for an Android based game which is capable of handling complex concave curves in 2D. I use complex in this post to describe any non-trivial, arbitrary shape (beyond circles, squares, etc). My problem is that all of the various methods I have come across are either too simplistic to be realistic or too complex for a cell phone. At the moment I am favoring a tile-based scheme but I am having problems figuring out how to do this with convex curves that span several tiles and may have several line segments per tile. I gave some thought to representing the curves mathematically, with each tile being an interval of the function, but there will likely be points where the curve doubles-back on itself (think the big loop at the top of a pinball table that brings the ball all the way around the table and back the direction it came). My questions boil down to:
1. Does anyone know of a way of hit testing a given simple shape (e.g. a circle) against a concave series of line segments (shapes beyond circles can be figured out from there) beyond just a Boolean result?
2. What is the best way to represent large, complex shapes programatically? I am currently favoring an XML file describing my levels and the objects in them with shape/position/physics/etc. data to be parsed in during load time.
3. Is there an altogether better way of doing this beyond line segments?
The one saving grace in this conundrum is that I know the vast majority of the objects are stationary with, at most, three or four (usually one) dynamic objects moving around.
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Mar 5, 2014
According to the MS website, Windows Media Player queries an MTP device to see what formats it supports. My Razr Maxx HD supports ogg and m4a. When attempting to sync WMP does not sync those files stating they might not be supported on the device. Being that I've had so much trouble in the past even getting any of the Android devices to be properly detected as an MTP device I'm worried this is a driver issue.I should be able to get WMP to at least convert them.
this is the device mis-reporting the formats, Windows not querying them properly, or an actual WMP issue? Would like to be able to get sync working without any conversions. Maybe there is a way to hardcode formats within the mtp inf file?
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Jun 30, 2010
Is it possible to detect that the viewport is being dragged by a touch event?
Using the following code I am able to get the position of where the finger touched the screen, what node started the event and where it was dragged to. Which solves one of the problems but I would really like to detect when the user has dragged the page/window/viewport down.
To attempt to be more clear as to what I am trying to do: I would like simulate the refresh activity in Tweetie 2/Twitter for iPhone but in HTML5 and JavaScript. Code....
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Jun 6, 2012
Ive got a Rooted and Unlocked to any network OT 990, I have a problem when trying to connect the USB cable Nothing happens apart from the phone charges, Windows does not detect the phone. Have tried in XP and Win 7.
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Jul 10, 2010
I've had a Milestone for about a month now and have noticed that it seems to have problems detecting that the USB cable has been connected.Sometimes when I connect it, to the mains charger or to a PC, it doesn't indicate that anything has happened - no USB notification and no lightning symbol on the battery to show that it is charging. If I power the phone off and then connect it the phone turns on and shows the USB notification.Has anyone else experienced this or should I look at getting the phone exchanged?
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Sep 16, 2010
does anyone know how does face detection work in the desire's camera. i have it enabled but i don't see any changes. any ideas guys?
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Jul 26, 2012
Is there any way to have my wifi automatically turn off when i leave my home wifi connection? I'm trying to not have it continue to search for signal ans drain bay when not in range at home
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Dec 14, 2012
I was wondering if there is anyway to make SoundHound or Shazam to detect musics that played from Internet radio, ie "tunein" or alikes, that usually plays only if you plug your headphones in?
It seems SoundHound and Shazam can only detect incoming sound using the phones mic, so if nothing is going to mic it will not detect anything at all.
I saw in a post from a Sony Xperia user that he accidently made it working but i think its only for that particular phone.
Any workarounds/mods to make this work on any android device?
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Aug 4, 2010
I'm trying to figure out how to implement a basic augmented reality application that uses a piece of (real) paper to navigate (simple rotate, zoom) a virtual 3d or pseudo-3d space. The example implementation that comes to mind is the Harry Potter 3D Augmented Reality ad, where you can take a piece of paper, point it at your web cam (at the right angle/distance), and 3d buildings and such would pop up (on your screen). You can then turn the paper around to rotate the building, or even zoom in. The example above is done using Shock wave. I'm wondering if there are better web-friendly plugin's, such as Flash (or even HTML5, if web cam integration works?) that might be able to do the same? Also, are there ways to optimize grid detection, so that the effect is less "lossy" - with the HP example, the buildings often lose their "bearings" on the real paper and just freeze on screen.
It looks like there's already a class (for flash) - portability for iphone(?)
http://www.libspark.org/wiki/saqoosha/FLARToolKit/en
http://www.adobe.com/devnet/flash/articles/bow_cards.html
http://www.adobe.com/devnet/flash/articles/augmented_reality.html
It seems to work best with solid-color images though, rather than a complicated map, as in the HP example. Is it possible to get the cam on an Android or iPhone to do the augmented reality effect?
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Jul 31, 2009
I'm developing an app and i need to detect when the user shakes the phone from side to side , that means just along one axis (in this case X).I want to know when the user shakes the phone to the left and when to the right, the problem is that my code does not detect shaking but tilt, i have tested this code and it works when i tilt the phone to left or to the right, but not when a shake it from side to side (no matter the orientation of the phone).
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Aug 6, 2010
Is it possible to set it up so I can send a text from my computer using my cell phone # and not my google voice # ?
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Jun 11, 2010
I've noticed this since I bought the phone (I had other issues before such as low battery life, vibration feedback simply not working, etc - I hard reset the phone and those went away, but this is back), and I'm wondering if it's my hardware, or the software.
Basically, if I'm listening to music (Pandora or the Music app), it'll randomly hit Next song - if it's the music app, it'll be a mish-mash of fast forward and next track. This is with the phone screen off or on. When it starts happening I turn the screen on and notice it jumping all over, and I've not touched anything. Additionally, while this is happening, voice dialer opens over and over after I close it, and sometimes it'll just start making a call to the last dialed/received number (which is making me a hit with all my friends).
Finally, I say possessed because this is not consistent. For example, I'm listening to Pandora now with no issues. However, the fact that I have to even worry about this happening again (it's almost surefire in the car, for some reason, but not exclusive to there) is a dealbreaker, and my 30 day trial is still going, so I should probably decide.
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