NO!

she say it so loud she wake Discord on his realm.
Discord: I hate when she do this.. well good think she a not destroy the dimension wall of my realm like majin boo can do!

this is why Celestia a stop to use it for long time, look how every creature be push and stun by it

@Background Pony #A01B  
TRCV is Traditional Royal Canterlot Voice!

Luna a show how a total controled TRCV is, But Celestia A show how Powerful is a TRCV is, Flurry a show how powerful a out control TRCV is and Twilight a show how powerful a newbie are with TRCV is but How skilled Cadance is with her TRCV?
 
TRCV is Traditional Royal Canter lot Voice!

Finally. We got to hear her speak in the Royal Canterlot Voice.

i dont think she show the full power of her royal canterlot voice! she the most powerful , luna is second (she the sister of the most powerful so is normal) and her too a not show her full power of it! twilight she only start to show are powerful she be! cadance is the only one a not show her canterlot voice! her dauther a show it! thanks to flurry we know now is not a good idea to use a royal canterlot voice close of the crystal heart! but we all know is impossible to hear a alicorn princess! less you can’t hear! but the shock wave and wind will make you know a alicorn a use thier RCV Or Royal Canterlot Voice! or what i call it THE ALICORN VOICE!

@Background Pony #237A
 
Booty-Os for everyone.

Watch as a guy with an LRAD basically replicates this.

@Jumpitydude  
Fluttershy is probably just outside the area of maximum effect, being positioned both behind and at least a little distance from Princess Celestia. Any closer or to one side or another and she would have probably been knocked over or blown away.

@Background Pony #1DF5  
I feel like Cady is too much of a sweetie to ever raise her voice that much.

Canterlot Royal voice  
P. Celestia - checked  
P. Luna - checked  
P. Twilight - checked  
Flurry heart because she and alicorn so… checked
 
Now all we need is Princess Cadance

As many a comment said on a livestream of this episode:
 
Nicole Oliver may have had fun with this one XD

I like how the only one least effected by this is Fluttershy. Like Twilight and Spike got knocked over, Sandbar went flying, Ocellus, Smolder, and Yona all slid away a bit, Gallus is dazed, Silver has to cover her ears, but Fluttershy’s… just at her podium. Staring at Celestia.

I’d hate to be between Luna and Celestia speaking with Canterlot’s voice together! You go deaf in seconds! XD

@Background Pony #3EDF  

 
And with a statement like that, I’m sure you’re not biased at all.

@Background Pony #075A  
I just compared them and haven’t seen any difference.
 
When you see someone say that Luna does something better it is most probably biased.

Background Pony #075A Yeah… No she doesn’t bias much?.

@Background Pony #075A  
I imagine if she wasn’t trying to act and was actually angry, it’d be as effective as Luna described in the Journal.

@Background Pony #075A  
I was thinking how very similar they sound.

….Yeah…Luna does it better…