Vocaloid Resonance Controls – Part 3

By Joe Hogan – June 2004

In this brief article I will show an example of how vocaloid resonances can be used to change the pronunciation of vowels. Please read parts 1&2 in order to get the best understanding of what is being discussed

Example 2: ‘die’

In this example I want to use the phoneme ‘aI’, sounds like ‘eye’. There has been various words that I have used where I have not liked the pronunciation of ‘aI’, and have been able to fix it very easilly by changing resonance2.

One such word was ‘die’, so I will use that as an example. Please open this vocaloid midi file. This example is also made using the Miriam font so remember to switch the singer to Miriam.

It should sound something like this:

die before.mp3

The pronunciation is almost ok to my ears, but isnt quite how I would pronounce it myself.

Now, open the controller track ‘Resonance 2 – Frequency’ and draw a single point at level 45 where the note ‘die’ starts.

Now it should sound something like this:

die after.mp3

Here is the final vocaloid midi. Please compare the before and after samples.

Again, to my ears this sounds more correct now. But it is entirely my opinion and the difference is subtle. It’s completely irrelevant anyway, as this is purely an example of how to change the dialect of Vocaloid. Like I said in part 2, if I can make the accent right for my ears, then you can make it sound right for you.

So what now?

Unfortunately messing around with the resonances in Vocaloid is largely trial and error. In theory you could make any vowel sound like any other vowel, but in practise that is impossible. My advice therefore is to start with the vowel that sounds the closest to the sound you want, and then use that as a starting point. It might not be the ‘correct’ vowel phoneme, especially if you are trying to simulate a specific accent.

I find that if I change the frequency of a resonance it’s sometimes hard to clearly hear the bit thats changed. Sometimes it can be helpful to boost the amplitude of each resonance in turn (not too much or you could destroy your speakers….. and ears!!), and then move the frequency around untill you find the point that sounds most correct, then set the amplitude back to 64 and move on to the next resonance.

[It is possible to change the resonances so they swap positions, for example if you increase the frequency of resonance 2 and reduce resonance 3, they may cross over. This usually produces a synthetic and sometimes unpleasant sound, you will know it when you hear it.]

Good Luck!

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