espeak NG large difference between rate 18 and 19 when rate boost is enabled

[nikosdemetriou]

Before #13893 was merged, this problem existed between rate 99% and 100% as well as 18% and 19%.
The remaining issue is blocked by espeak-ng/espeak-ng#131

Steps to reproduce:

• With eSpeak, set rate boost on and the rate at 18.
• change to rate 19.

Actual behavior:

The rate of speech is slower at rate 19 than at 18. And at rate 19, eSpeak sounds a bit strange: the vowels sound slightly longer at rate 19 than at rate 18.

Expected behavior:

eSpeak should speak slightly faster at rate 19 that at rate 18, without changing the quality of the voice.

System configuration

NVDA installed/portable/running from source:

portable.

NVDA version:

latest alpha

Windows version:

Windows 10, Version 21H2 (OS Build 19044.1766)

Name and version of other software in use when reproducing the issue:

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Yes

Have you tried any other versions of NVDA? If so, please report their behaviors.

All versions for many years.

If NVDA add-ons are disabled, is your problem still occurring?

Yes

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?

Yes

[Brian1Gaff]

I thought that 100 was the fastest speed, if you want it faster then the whole law of the speed plotted against the numbers needs to be altered. I don't know of any voice where it can go over 100. Obviously its a bug if it malfunctions at the top speed, maybe 99 needs plotting to the number 100, and then it would not do it. Brian

…

-- ***@***.*** Sent via blueyonder.(Virgin media) Please address personal E-mail to:- ***@***.***, putting 'Brian Gaff' in the display name field. ----- Original Message ----- From: "nikosdemetriou" ***@***.***> To: "nvaccess/nvda" ***@***.***> Cc: "Subscribed" ***@***.***> Sent: Thursday, July 07, 2022 2:08 PM Subject: [nvaccess/nvda] espeak NG sounds strange at rate 100 or faster (Issue #13876)

I am using nvda with the espeak synth. My speed is 99 because if i choose 100, espeak sounds a bit strange. 100 is not at all faster than 99, and the vowels sound slightly longer at rates 100 or if I use the rate boost option. I am using the Greek espeak voice, but I find the same behaviour with the English voices as well. ### Steps to reproduce: Set the espeak rate at 100 or use the rate boost option. ### Actual behavior: The quality of speetch is mutch different between rate 99 and 100. ### Expected behavior: Espeak should speak slightly faster at rate 100 without changing the quality of the voice. ### System configuration #### NVDA installed/portable/running from source: Installed or portable. #### NVDA version: 2022.2 beta 3 installed, and latest alpha as portable. #### Windows version: Windows 10, Version 21H2 (OS Build 19044.1766) #### Name and version of other software in use when reproducing the issue: #### Other information about your system: ### Other questions #### Does the issue still occur after restarting your computer? Yes #### Have you tried any other versions of NVDA? If so, please report their behaviors. All versions for many years. #### If NVDA add-ons are disabled, is your problem still occurring? Yes #### Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu? Yes -- Reply to this email directly or view it on GitHub: #13876 You are receiving this because you are subscribed to this thread. Message ID: ***@***.***>

[amirmahdifard]

exactly i have the same problem with espeeck

[nikosdemetriou]

Hi Brian.
In the speech settings of nvda, there is a rate boost option. If we enable it nvda speaks much faster with some synths.

For example, if rate boost is enable, Rate 18 is simmilar as it was 99 without it.

So now with the rate boost enabled, rate 18 sounds good to me, but if I set it to 19 or higher, it starts sounding strange to me.
Nikos.

I thought that 100 was the fastest speed, if you want it faster then the whole law of the speed plotted against the numbers needs to be altered. I don't know of any voice where it can go over 100. Obviously its a bug if it malfunctions at the top speed, maybe 99 needs plotting to the number 100, and then it would not do it. Brian
…
-- @.*** Sent via blueyonder.(Virgin media) Please address personal E-mail to:- @., putting 'Brian Gaff' in the display name field. ----- Original Message ----- From: "nikosdemetriou" @.> To: "nvaccess/nvda" @.> Cc: "Subscribed" @.> Sent: Thursday, July 07, 2022 2:08 PM Subject: [nvaccess/nvda] espeak NG sounds strange at rate 100 or faster (Issue #13876)
I am using nvda with the espeak synth. My speed is 99 because if i choose 100, espeak sounds a bit strange. 100 is not at all faster than 99, and the vowels sound slightly longer at rates 100 or if I use the rate boost option. I am using the Greek espeak voice, but I find the same behaviour with the English voices as well. ### Steps to reproduce: Set the espeak rate at 100 or use the rate boost option. ### Actual behavior: The quality of speetch is mutch different between rate 99 and 100. ### Expected behavior: Espeak should speak slightly faster at rate 100 without changing the quality of the voice. ### System configuration #### NVDA installed/portable/running from source: Installed or portable. #### NVDA version: 2022.2 beta 3 installed, and latest alpha as portable. #### Windows version: Windows 10, Version 21H2 (OS Build 19044.1766) #### Name and version of other software in use when reproducing the issue: #### Other information about your system: ### Other questions #### Does the issue still occur after restarting your computer? Yes #### Have you tried any other versions of NVDA? If so, please report their behaviors. All versions for many years. #### If NVDA add-ons are disabled, is your problem still occurring? Yes #### Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu? Yes -- Reply to this email directly or view it on GitHub: #13876 You are receiving this because you are subscribed to this thread. Message ID: @.***>

[nikosdemetriou]

Sorry for closing and reopening.
It was a mistake.

[CyrilleB79]

The issue is known and tracked on eSpeak NG side: espeak-ng/espeak-ng#131.

An obvious way to reproduce this issue is to read the following line in US English:
1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
And to compare between rate 99% and 100% (ate boost off) or 18% and 19% (rate boost on).

[nikosdemetriou]

Hi.
Thanks for letting us know about the issue on espeak ng's site.

Probably the quickest fix from nvda's part could be to make rate 99 as rate 100, so the maximum rate without rate boost would sound fine.
In this senario, the default rate would sound slightly slower, but people who want it faster they could change it.

[trypsynth]

I doubt ESpeak can do anything about it. That's just what Sonic does. However, that PR looks pretty cool, if it works

[seanbudd]

@CyrilleB79 - is the updated description accurate for what's remaining on this issue?