$25 : A Piano Sample

@ilan

check your Paypal account plz.
Confirmation number: 28T51510XL023135A.

I’ll appreciate if you spend some time and make a better sample supporting multi touch (if you have time) and I’ll pay for that.
 
thanx for the donation

Ohanian said:
I’ll appreciate if you spend some time and make a better sample supporting multi touch (if you have time) and I’ll pay for that.
Click to expand...

i will try to do that but cannot promise :)
 
LucaMs said:
You should use a sound generator. I tried the Beeper object of the Audio library; result: very bad :D
Click to expand...

... and using this library?

(or this code from StackOverflow:
Code: Copy 
public class PlaySound extends Activity {
// originally from http://marblemice.blogspot.com/2010/04/generate-and-play-tone-in-android.html
// and modified by Steve Pomeroy <[email protected]>
private final int duration = 3; // seconds
private final int sampleRate = 8000;
private final int numSamples = duration * sampleRate;
private final double sample[] = new double[numSamples];
private final double freqOfTone = 440; // hz

private final byte generatedSnd[] = new byte[2 * numSamples];

Handler handler = new Handler();

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}

@Override
protected void onResume() {
super.onResume();

// Use a new tread as this can take a while
final Thread thread = new Thread(new Runnable() {
public void run() {
genTone();
handler.post(new Runnable() {

public void run() {
playSound();
}
});
}
});
thread.start();
}

void genTone(){
// fill out the array
for (int i = 0; i < numSamples; ++i) {
sample[i] = Math.sin(2 * Math.PI * i / (sampleRate/freqOfTone));
}

// convert to 16 bit pcm sound array
// assumes the sample buffer is normalised.
int idx = 0;
for (final double dVal : sample) {
// scale to maximum amplitude
final short val = (short) ((dVal * 32767));
// in 16 bit wav PCM, first byte is the low order byte
generatedSnd[idx++] = (byte) (val & 0x00ff);
generatedSnd[idx++] = (byte) ((val & 0xff00) >>> 8);

}
}

void playSound(){
final AudioTrack audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC,
sampleRate, AudioFormat.CHANNEL_CONFIGURATION_MONO,
AudioFormat.ENCODING_PCM_16BIT, numSamples,
AudioTrack.MODE_STATIC);
audioTrack.write(generatedSnd, 0, generatedSnd.length);
audioTrack.play();
}
}
)


[Very nice formatting :)]
 
Last edited:
Ohanian said:
I’ll appreciate if you spend some time and make a better sample supporting multi touch (if you have time) and I’ll pay for that.
Click to expand...

ok my friend, i had to create a complete new project and do it in a different way but now it supports Multi Touch.
i hope you like it. :)

Ohanian said:
and I’ll pay for that.
Click to expand...
consider the hard work i did :p

tell me if its working, you will need the Gestures Lib: https://www.b4x.com/android/forum/threads/gestures-multi-touch-library.7421/#content from @agraham

have fun :)

EDIT: new version, fixed a small performance issue
 

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Last edited:
Hi,

You’re a rapid coder ;)

I just need the code, the graphic is already done, and the app is published, we’re improving it according to user’s feedback.

It’s weekend here, so please wait a few days for a feedback. But it seems ok for me.

And if you’re interested here’re some screenshots.
 

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Ohanian said:
Hi,

You’re a rapid coder ;)

I just need the code, the graphic is already done, and the app is published, we’re improving it according to user’s feedback.

It’s weekend here, so please wait a few days for a feedback. But it seems ok for me.

And if you’re interested here’re some screenshots.
Click to expand...

i like the graphics, are you drawing them by yourself?
 
hi
no , we have a small team.
coders and a designer.
 
@ilan

check your Paypal account please.
Confirmation Number: 5JA40971JM690431R
 
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