Update demo description to clarify control over principal components

app.py

@@ -20,17 +20,15 @@ In this demo, you can upload a raw vocal audio file (in mono) and apply random e
 
 The effects consist of series of EQ, compressor, delay, and reverb.
 The generator is a PCA model derived from 365 vocal effects presets fitted with the same effects chain.
-This interface allows you to control the first 10 principal components (PCs) of the generator, randomise them, and render the audio.
-For the rest of the PCs, you can choose to randomise them or set them to zero.
+This interface allows you to control the principal components (PCs) of the generator, randomise them, and render the audio.
 
 To give you some idea, we emperically found that the first PC controls the amount of reverb and the second PC controls the amount of brightness.
 Note that adding these PCs together does not necessarily mean that their effects are additive in the final audio.
 We found sometimes the effects of least important PCs are more perceptible.
 Try to play around with the sliders and buttons and see what you can come up with!
 
-Currently only a portion of PCs are tweakable, but in the future we will add more controls and visualisation tools.
+Currently only PCs are tweakable, but in the future we will add more controls and visualisation tools.
 For example:
-- Exposing all the PCs
 - Directly controlling the parameters of the effects
 - Visualising the PCA space
 - Visualising the frequency responses/dynamic curves of the effects