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Step 3:  Drag “Change pitch effect by 10” block in the script area, which is
used to change the speed of the sound of table sprite. Now change

its value from 10 to 30. (For increasing its speed).
 Then drag “play sound… until done” block in the script area, to play

a sound completely. Choose any sound of tabla. (e.g. Hi Tun Tabla).
So, no need of wait block now.

Step 4: Repeat the step 3 again. (See script/code in Fig. 3.1)
Step 5: When we click on the “flag” now, the sprite “tabla” plays the sound four

times, but when we next click the flag, speed of the sound increases
every time. To remove all these effects, do the following more steps:-
i) Drag the blocks “clear sound effects” and “set volume to 100%”

and drop these blocks one by one under “when flag clicked” block.

ii) So, every time when we click on the “flag”, the sound starts from
initial “volume and speed” of the sound and this will remove all the
previous effects from sound.

Check Your Knowledge

1. You have seen so many sound effects in Scratch now. Write their names to do

the following tasks.

Action Name of Block
a. Change the pitch of the sound of sprite ___________

b. Increase the volume of the sound of sprite ___________

c. Decrease the speed of the sound of sprite ___________

d. Remove all the sound effects ___________

e. To set the pitch of the sound of sprite to a
specific value ___________

f. To stop any kind of sound of sprite ___________

2. Under which block “clear sound effects” block of instructions available in

Scratch?

3. What is the meaning of “set pitch effect to…” block?

32 KVS DELHI REGION 2025