Yamaha Expansion Manager Bug ??

[Normanfernandez]

On C 6 and B 5
There seems to be a glitch,

The Sample Recordings are Clearly Different,

I've set the Samples to the correct Actual Note.

Bb 5 and C 6,

But B5 and C6 sound the same//

Please verify this for me.

Thanks!
Regards Norman!

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[Normanfernandez]

Has anyone else tested it??

[jo mustafa]

Has anyone else tested it??

B5 and C6 same sound, C#6 not

[tyrosaurus]

Hi Norman,

The wave samples that you posted are C6 and B5 and have the correct frequencies.

However, when the voice is imported into YEM and is opened for editing, you can see that for notes in the range Ab5 to B5 (for which you have presumably used the B5 sample),  the Original Key is set to Bb5!  This makes all of these notes play 1 semitone higher than they should!

If you change the Original Key to B5 for the notes using this sample, the notes play correctly.



Regards

Ian

[Normanfernandez]

But it's odd

C 6 has it's own Wave file so I don't see a issue for not changing.

[tyrosaurus]

Hi Norman,

If the Original Key in YEM is set 1 note lower than it should be for the B5 sample, then all notes to which that sample is assigned will play one semitone higher than they should, which is what they do in the 'Error' voice that you posted!

So when you press the B5 key, the note that actually sounds is C6, which of course sounds the same as the note that plays correctly (i.e. C6) when you press the C6 key, which has the Original Key correctly set in YEM for the sample used!

Just set the Original Key correctly (to B5) for the B5 sample and all will be correct!


Regards

Ian

[Normanfernandez]

So the Way YEM works is

If I have a sample Say   G     it can only go Up or Down but not Both Ways? ( Range )

[tyrosaurus]

Hi Norman,

You can extend the range of notes both above and below the sample that is assigned to them.  You can even use one single sample to cover the whole keyboard if you wish, although this usually won't give the best results !  Many typical voices use a different sample for every three keys, with the pitch of the sample centred on the middle note of the three for best results, and often expanding the range to maybe one sample per octave at the very extremes of the keyboard.

But however many keys a sample is assigned to, for each one to play their correct pitch, you must tell YEM what actual pitch that the sample represents.

So if you use a sample of a sound recorded at a pitch representing B5 (such as the one posted by you), you need to tell YEM that the Original Key is B5.  YEM will then play the correct pitch when B5 is pressed, and essentially transpose/pitch shift that sample up or down to play the relevant pitch for the rest of the notes assigned to it.  If you set the Original Key to a different value, such as in your voice, Bb5,  YEM will play the sample at its original pitch (B5) when the Bb5 key is pressed instead of the B5 key. 

Because your voice assigns the B5 sample to the keys from Ab5 to B5, the sample will be used whenever one of those keys is pressed. However, by setting the Original Key to Bb5 you have told YEM that the sample is actually a recording at pitch of Bb5 instead of B5, and  therefore none of these three notes will play at the correct pitch - instead they will all play one semitone too high!  Pressing B5 will play at the pitch one semitone higher than B5, which is C6 and not correct.   

For the second sample (C6) in your voice, the Original Key is correctly set at C6 in YEM .  This sample is assigned to keys C6 and C#6, and because the Original Key is correct, pressing the C6 key produces a sound at pitch C6, which in this case is correct.  Pressing C#6 will play a note using that sample 'transposed' to the pitch of C#6.   


Regards

Ian

[Normanfernandez]

I think I was really exhausted by the time I reached B 5'.
Well It's probably the most silly mistake. 

I thought the B5 was Bb5 ( Sample )

Hopefully some of you'll have made such mistakes 🙈🙈🙈

Thank you Lan, but if I only had checked it properly.

My bad!
Norman.