Audio fine tuning

[DNin01]

Why this would be helpful

Scratch lets you change the speed and volume of audio tracks in the sound editor, but it's not as precise as more professional software like digital audio workstations. While your control over the volume is pretty much granular enough, your control over the speed only gets as precise as increments of 4 half-steps, with three clicks of either button changing the pitch by an octave.

How this addon works

For those small fine-tuning moments, a way to adjust the speed more exactly or by smaller increments would help with making more sophisticated sound effects.

At the same time, it shouldn't be painstaking to make coarse adjustments. The smaller the increment gets, the more clicks it takes to change the speed by larger amounts. One way to solve this is by using modifier keys to adjust the speed different amounts, like:

• Holding no keys to speed up/slow down by 1 half-step at a time.
• Holding Shift to speed up/slow down by 4 half-steps as usual.
• Holding Alt to speed/up/slow down by half of a half-step.

There could also be other ways to change the speed, like by using a slider, that make both fine and coarse adjustments easy.

Possible alternatives

While you can use the pitch block to achieve more precise speed/pitch adjustments, you have more control and predictability over when those speed/pitch changes happen if you can directly edit the audio files, while changing it procedurally can result in inconsistent playback based on performance.

Additional context

Related code:

• https://github.com/scratchfoundation/scratch-gui/blob/22a846f30a4340dc929fb27a92afda650f4ca1fc/src/lib/audio/audio-effects.js#L40-L56
• https://github.com/scratchfoundation/scratch-gui/blob/db4b7a0ad9fbb83941b86e17e58e3df3bb48f844/src/lib/audio/audio-effects.js#L107-L141

[DNin01]

Also, if possible, it could be interesting to have "slow down" and "speed up" buttons, which would work like the "fade in" and "fade out" effects but for speed. To control how fast or slow the audio becomes, you would keep clicking them until the effect is just right.

[DNin01]

A better audio editor (turn the video sound on):

audioeditor.webm

_{(Sound effect from notificationsounds.com)}

[BroJac5246]

Also, if possible, it could be interesting to have "slow down" and "speed up" buttons, which would work like the "fade in" and "fade out" effects but for speed. To control how fast or slow the audio becomes, you would keep clicking them until the effect is just right.

Is that actually useful?

[Secret-chest]

What about a speed slider or number entry with a percentage?