How to control reading speed

Contributed Library Questions

Achillx

in Contributed Library Questions • 1 year ago

I'm writing a code to "translate" word into sound but it plays it almost instantly!

I want to control how many letters/second is reading which means how many note/second it plays.

I used something to delay the processing but when I run it, the processing app freezes!

import arb.soundcipher.*;
SoundCipher sc = new SoundCipher(this);
long lastTime = 0;
void setup() {
frameRate(10);
sc.instrument(90);
String geo[] = loadStrings ("dog.txt");
String wholeText = join(geo, "");
}
void draw(){
for (int i=0; i < wholeText.length(); i++) {
char c;
c = wholeText.charAt(i);
println ("Now playing letter:" + c);
sc.playNote (c -40, 100, 0.5);
lastTime = millis();
while (millis() - lastTime < 100){
println("do every 1/10 of sec");
}
}

Replies(6)

v.k.

Re: How to control reading speed

1 year ago

I don't have this library, but there are some things i noticed.

The wholeText string is declared inside setup, so you will not be able to access it from draw, you might want to move it to global scope. (outside any block).

When the program enter the for block it stays there until the condition is met. You are doing every thing inside this for loop so the "waiting time" is for every thing. Same for the while inside the for. Have a look in this thread, it may help you understand timing.

Or you may go for a separate thread. But i think is not need here. Anyway here you can learn about thread.

Achillx

Re: How to control reading speed

1 year ago

When I'm puting

String geo[] = loadStrings ("dog.txt");
String wholeText = join(geo, "");

outside void setup it gives me an error that the dog.txt does not exist! But a have it inside the data folder..

As for the soundcipher library is for playing music..

Anyway..I want to input the text into characters and then play it by conventing them into their ascii value.

PhiLho

Re: How to control reading speed

1 year ago

" outside void setup it gives me an error that the dog.txt does not exist!"
Yes, classical error, the data folder is known only when setup() has started.
You can declare the array outside, and assign it inside:

String[] geo;
void setup()
{
geo = loadStrings ("dog.txt");
}

Achillx

Re: How to control reading speed

1 year ago

Thanks PhiLho,

can you tell me how to have this string from one single line array to an array of letters?

for example if the dog.txt contains "Hi I am a dog."

geo is:

[0]Hi I am a dog.

and I want to have:

[0]H

[1]i

[2]

[3]I

[4]

[5]a

[6]m

[7]

[8]a

[9]

[10]d

[11]o

[12]g

[13].

Achillx

Re: How to control reading speed

1 year ago

I thing I did the letter array, but now I get a void error in the void draw!

I looked for missing brackets but can't find one!!But maybe there is one!

import arb.soundcipher.*;
SoundCipher sc = new SoundCipher(this);
String[] geo;
int rate = 30;
void setup() {
size(200, 200);
frameRate(rate);
sc.instrument(90);
geo = loadStrings("dog.txt");
for (int e = 0; e < geo.length; e++) {
String line = geo[e];
char[] chars = line.toCharArray();
//println(chars);
}
void draw() {
background(255);
if (frameCount % rate == 0) {
for (int i=0; i< chars.length(); i++) {
char c;
c = chars.charAt(i);
println ("Now playing letter:" + c);
sc.playNote (c -32, 100, 0.5);
//println(frameCount);
}
}
}

PhiLho

Re: How to control reading speed

1 year ago

You did the same error with the char array: it must be declared at the global level. Variables declared in a block between { and } disappear as soon as the block ends...
Now, perhaps you can transform the line to a char array on the fly, in draw.
But do you really plan to play all the letters of a line in the same frame? Perhaps you want to play one letter per frame.
So you need a global counter or two: one for the lines, another for the letters in the line.

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