LISTA

LISTA workshop and invited talk

The LISTA (listening talker) workshop was held on Wednesday 2nd and Thursday 3rd May in Edinburgh. I have had an invited talk on the intelligibility of HMM-based speech synthesis in noisy conditions and have introduced a few techniques for improving the intelligibility of HMM-based speech synthesizer. (Slides)

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LISTA meeting in Crete

A meeting for FP7 EC Project "LISTA" was held in Crete, Greece

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A picture taken at FORTH (Foundation for Research & Technology) building

A new FP7 EC project 'LISTA' kicked off!

We have had a kick-off meting of a new EC FP7 project 'LISTA' (2010--2013) and have introduced the recent work on HMM-based speech synthesis such as articulatory controllable HMM-based speech synthesis and the use of hyper-articulation under noisy conditions. This is a collaborative project with University of the Basque Country (Spain), KTH (Sweden) and ICS-FORTH (Greece).

The following is cut & paste from http://listening-talker.org/

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Speech is efficient and robust, and remains the method of choice for human communication. Consequently, speech output is used increasingly to deliver information in automated systems such as talking GPS and live-but-remote forms such as public address systems. However, these systems are essentially one-way, output-oriented technologies that lack an essential ingredient of human interaction: communication. When people speak, they also listen. When machines speak, they do not listen. As a result, there is no guarantee that the intended message is intelligible, appropriate or well-timed. The current generation of speech output technology is deaf, incapable of adapting to the listener's context, inefficient in use and lacking the naturalness that comes from rapid appreciation of the speaker-listener environment. Crucially, when speech output is employed in safety-critical environments such as vehicles and factories, inappropriate interventions can increase the chance of accidents through divided attention, while similar problems can result from the fatiguing effect of unnatural speech. In less critical environments, crude solutions involve setting the gain level of the output signal to a level that is unpleasant, repetitive and at times distorted. All of these applications of speech output will, in the future, be subject to more sophisticated treatments based at least in part on understanding how humans communicate.

overall


The purpose of the EU-funded LISTA project (the Listening Talker) is to develop the scientific foundations needed to enable the next generation of spoken output technologies. LISTA will target all forms of generated speech -- synthetic, recorded and live -- by observing how listeners modify their production patterns in realistic environments that are characterised by noise and natural, rapid interactions. Parties to a communication are both listeners and talkers. By listening while talking, speakers can reduce the impact of noise and reverberation at the ears of their interlocutor. And by talking while listening, speakers can indicate understanding, agreement and a range of other signals that make natural dialogs fluid and not the sequence of monologues that characterise current human-computer interaction. Both noise and natural interactions demand rapid adjustments, including shifts in spectral balance, pauses, expansion of the vowel space, and changes in speech rate and hence should be considered as part of the wider LISTA vision. LISTA will build a unified framework for treating all forms of generated speech output to take advantage of commonalities in the levels at which interventions can be made (e.g., signal, vocoder parameters, statistical model, prosodic hierarchy).
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CSTR takes a lead for WP3 on synthetic speech modifications.