brailcom/speechd

Volume/pitch/rate levels are not coherent between voices

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#162 opened on Nov 14, 2018

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Description

For instance, default espeak volume and default flite volume are not comparable.

We would need to take the time to look at coherent volume levels, using e.g. spd-say with the different voices and different --volume values for each voice, to get a coherent set.

Then we would be able to compute scales to compensate differences between syntheses.

Contributor guide

Research direction
Test volume levels with spd say using different voices and volume values. Compute scale factors to normalize levels between synthesis backends. Then implement the scaling in the speechd code.
Tech stack
cshell
Domain
accessibilitybackend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Cspeech dispatcher
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70