|Play Note () for () Beats|
play note () for () beats
The Play Note () for () Beats block is a music block and a stack block. The block will play the specified note with the set instrument for the specified amount of beats.
This block was titled play note () for () secs prior to Scratch 1.2, but was changed with the introduction of the set tempo to () block.
The block will play any numbered note between C (0) and B♭ (130). While the block's keyboard graphic shows notes up to C (132), notes 131 and 132 cannot actually be selected, and a number outside the range given above cannot be typed into the block. If a number outside the available range is given to the block, through use of a variable or otherwise, the block will play the lowest or highest possible note, either 0 or 130, depending on whether the number is less than 0 or greater than 130, respectively. While notes cannot be smaller than 0 or larger than 130, notes can be any decimal number within the aforementioned range. While unelectable on the piano keyboard, a decimal number can be inputted and a note will play at the appropriate frequency.
As the block plays a note, it is widely used when a song is played with the music blocks. Some common uses for Play Note () for () Beats include:
- Easy sound effects (numbers up to 130 still work); very high and low notes make interesting sounds
repeat until <(x) = > play note (x) for (0.1) beats change [x v] by (-1) end
- Musical projects where you control instruments
forever play note ((mouse y) mod (129)) for (0.1) beats end
- Creating a song made by blocks
repeat (2) play note (62) for (0.5) beats end repeat (2) play note (69) for (0.5) beats end repeat (2) play note (81) for (0.5) beats end play note (69) for (0.5) beats
The Play Note () for () Beats can sometimes be tricky to get used to since the notes and rhythms are notated with numbers, unlike sheet music. These diagrams may help:
There are 131 notes on Scratch's keyboard, numbered from 0 (C-1, about 8.18 Hz) to 130 (B♭9, about 14917.24 Hz). Each note is 1 number larger than the previous, and the ratio of frequency is always 12√2 (approximately 1.06), with A4 being 440 Hz.
|C4 (middle C)||60||262 Hz|
This table shows the beat number values for the most common rhythms in the most common time signatures, interpreted in the most basic way.