umbracochina / android-spectrum-analyzer Goto Github PK

Add seekbar to change noise level when in DEBUG_MODE


    <SeekBar
        android:id="@+id/seekBar1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1" />

App freezes when sampling rate is changed. Display keeps frozen (with white 
bars) when sampling rate is changed. It happens with a real device and not with 
the emulator.

Add buttons to change the mark frequency so that the freq of a signal can be 
figured out.

Add dialog to the beginning of the apk in order either to select debug mode or 
not to.

A scroll view must be added the the main view for different displays sizes to 
be able to show all the selections available.

Add buttons to change center frequency. Two buttons, (< and >) must be added in 
order to vary the center frequency and allowing the apk to show all frequency 
contents it has available.

Implement an automatic way to calculate the optimum number of FFT points for a 
given sampling rate.

Add option to allow frequency change when in DEBUG MODE. Add an edittext like 
showed below.

    <EditText
        android:id="@+id/editText1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:inputType="numberDecimal" >

        <requestFocus />
    </EditText>

Through the use of JNI and C++ implement a native service which works out FFT 
on audio signals captured by the built-in audio device. It's gonna work faster 
and consequently the systems won't freeze constantly.

Add buttons, checkboxes and seekbars to change signal's levels when in 
DEBUG_MODE.

Both debug signals must be configured, i.e., there must be a way to change 
their frequencies and levels.

In a real device app crashes when sampling rate of 96000 Hz is selected. 
Perhaps it's due to hardware, i.e., it's not capable to set that specific 
value. It must be handled properly, either with catch or something else.

Implement AWGN noise method. It can be generated through the sum of infinite 
(many) uniform random variables.

What steps will reproduce the problem?
1. Choose not to run App in debug mode
2. Wait until phone screen fades away
3. Recover phone screen

What is the expected output? What do you see instead?
Normally recover the screen without being prompted to run App in debug mode 
again.

What version of the product are you using? On what operating system?


Please provide any additional information below.
Sometimes the popup is shown even without waiting the screen to fade away

Instead of using a single and awful canvas why not give a chance to OpenGL?
For further information please visit: 
http://developer.android.com/resources/tutorials/opengl/opengl-es20.html

Stop screen from dimming by enforcing wake lock.

see: 
http://www.androidsnippets.com/stop-screen-from-dimming-by-enforcing-wake-lock

ANR happens when 64 points is chosen as the number of FFT points.

I believe it's happening because the method 
notifyListenersOnFFTSamplesAvailableForDrawing() is getting called gazillion of 
times in a second. Perhaps if we change the way the panel is updated fixes this 
problem, i.e., instead of getting called every time samples are available we 
should call notifyListenersOnFFTSamplesAvailableForDrawing() every x seconds, 
maybe 500 ms.

Use long press to change center freq and center mark. It's son uncomfortable to 
change freq pressing buttons a lot of times, instead it would be nice if the 
user could press and hold a button pressed and it keeps changing freq while 
it's pressed down.

See links below in order to get further information:

1) 
http://stackoverflow.com/questions/5253371/play-sound-while-button-is-pressed-an
droid

2) 
http://stackoverflow.com/questions/2615616/triggering-event-when-button-is-press
ed-down-in-android

3) 
http://developer.android.com/reference/android/view/View.OnLongClickListener.htm
l

4) 
http://androidforums.com/application-development/17033-ontouch-onlongclick-toget
her.html

What steps will reproduce the problem?
1. Start the application;
2. Change orientation;

- Expected, orientation change without a confirmation dialog;

- Current behaviour: each orientation change the debug dialog is shown;

What steps will reproduce the problem?
1. Run Audio Spectrum Analyzer NOT in Debug Mode
2. Set Sampling rate to 96000HZ
3.

What is the expected output? What do you see instead?
 Expected : To show frequencies at the selected sampling rate
 Instead: Phone Crashed.

What version of the product are you using? On what operating system?
SVN Update 44 on Galaxy 5 -  OS Version:

Please provide any additional information below.

Add check boxes to enable noise and two signals when in DEBUG_MODE.

    <CheckBox
        android:id="@+id/checkBox2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="CheckBox" />