Systems and techniques for producing spoken voice prompts
Methods and systems are described in which spoken voice prompts can be produced in a manner such that they will most likely have the desired effect, for example to indicate empathy, or produce a desired follow-up action from a call recipient. The prompts can be produced with specific optimized speech parameters, including duration, gender of speaker, and pitch, so as to encourage participation and promote comprehension among a wide range of patients or listeners. Upon hearing such voice prompts, patients/listeners can know immediately when they are being asked questions that they are expected to answer, and when they are being given information, as well as the information that considered sensitive.
1. A method of producing spoken voice prompts for telephony-based informational interaction, the method comprising:
for one or more voice prompts, determining words that receive an optimized speech parameter, based on a meaning of a text of the one or more voice prompts in a context of a dialog with a listener;
recording the one or more voice prompts for a listener, and thereby producing one or more spoken voice prompts; and
conveying the one or more spoken voice prompts to a listener over a telephone system; and
conducting a telephony-based informational call with a called person, who receives the one or more spoken voice prompts as the listener.
2. The method of claim 1 , further comprising determining a number of words that receive an optimized speech parameter based on context and/or meaning of the one or more voice prompts.
3. The method of claim 1 , wherein the optimized speech parameter comprises one or more pitch accents.
4. The method of claim 3 , wherein the one or more pitch accents yield a pause lengthening pattern.
5. The method of claim 3 , wherein the one or more pitch accents comprise a phrase-final lengthening pattern.
6. The method of claim 3 , further comprising one or more boundary tones, wherein the one or more pitch accents and boundary tones comprise a defined intonation pattern.
7. The method of claim 6 , wherein the defined intonation pattern comprises specific rises or falls of a fundamental frequency of a spoken prompt.
8. The method of claim 7 , wherein the defined intonation pattern corresponds to a defined type of information conveyed by the spoken prompt.
9. The method of claim 8 , wherein the defined intonation pattern is determined based on responses of a population of participants in a computer-based exchange to specific types of voice prompts.
10. The method of claim 3 , wherein the words receiving the one or more pitch accents are determined based on a desired behavior that is desired of a person receiving a telephony call.