bmkeron.blogg.se - Enable speech recognition in express scribe

#ENABLE SPEECH RECOGNITION IN EXPRESS SCRIBE HOW TO#

Whenever possible, customize and personalize the dialogue (novice/expert).

Use flexible grammars to provide incrementally of the dialogue.

Orient users to their ‘location’ in task space as often as possible.

Provide real-time, low delay, responses from the machine and allow the user to barge in it at any time.

Summarize actions to be taken, whenever possible.

The key principles that have evolved are the following: However, much as we have learned good speech interface design principles, many of the same or similar principles are evolving for dialogue management. (Such systems are called ‘mixed initiative’ systems.) A complete set of design principles for dialogue systems has not yet evolved (it is far too early yet). The ‘ideal’ dialogue allows either the user or the machine: to initiate queries or to choose to respond to queries initiated by the other side.

Use physical actions or labeled button presses instead of text commands.ĭialogue Design Principles: For many interactions between a person and a machine, a dialogue is needed to establish a complete interaction with the machine.

Provide a mechanism for rapid, incremental, and reversible operations whose impact on the object of interest is immediately visible.

Provide a continuous representation of the objects and actions of interest.

User Interface Design: In order to make a speech interface as simple and as effective as Graphical User Interfaces (GUI), 3 key design principles should be followed as closely as possible, namely: We now expand somewhat on each of these factors:

Good models of dialogues that keep the conversation moving forward periods of great uncertainty on the parts of either the user or the machine.

Kinds of confusion that arise in human-machine communications by voice.

Good user interfaces which make the application easy-to-use and robust to the good models of dialogue that keep the conversation moving forward, even in matching the task to the technology.

#ENABLE SPEECH RECOGNITION IN EXPRESS SCRIBE HOW TO#

As a result, we have obtained a great deal of knowledge about how to design the feature analysis module, how to choose appropriate recognition units, how to populate the word lexicon, how to build acoustic word models, how to model language syntax and semantics, how to decode word matches against word models, how to efficiently determine a sentence match, and finally how to eventually choose the best recognized sentence.īuilding Good Speech-Based Applications: In addition to having good speech recognition technology, effective speech based applications heavily depend on several factors, including: Search and recognition decisions are made by 502 considering all likely word sequences and choosing the one with the best matching score as the recognized sentence.Īlmost every aspect of the continuous speech recognizer of Figure 1 has been studied and optimized over the years. Syntactic and semantic rules can be specified, either manually, based on task constraints, or with statistical models such as word and class N-gram probabilities. The sentence-level match module uses a language model (i.e., a model of syntax and semantics) to determine the most likely sequence of words. The word level acoustic match module evaluates the similarity between the input feature vector sequence (corresponding to a portion of the input speech) and a set of acoustic word models for all words in the recognition task vocabulary to determine which words were most likely spoken.

The feature analysis module provides the acoustic feature vectors used to characterize the spectral properties of the time-varying speech signal. isolated word recognition, connected word recognition, continuous speech recognition, etc. Interestingly enough, this generic block diagram can be made to work on virtually any speech recognition task that has been devised in the past 40 years, i.e. The figure shows a block diagram of a typical integrated continuous speech recognition system.