Speech Technologies in Cars and the Role of ITU-T

Transcription

1 1 Speech Technologies in Cars and the Role of ITU-T H. W. Gierlich HEAD acoustics GmbH Chairman of ITU-T FG CarCom

2 Why Speech Technologies 2 The driving task mostly occupied: visual system mainly involved: hands and legs not involved: talking involved: auditory system => Auditory Channel of the human system available

3 Speech applications 3 o The main speech applications: Speech recognition systems Speech dialog systems Text to speech systems Speech enhancement for communication systems Hands-free communication Enhanced in-car communication systems between passengers

4 Human interaction 4 1m Human conversation: orthotelefonic reference position

5 Speech dialog systems 5 1m Human machine communication

6 General Requirements for Human-Machine Communication 6 o Seamless man-machine interaction requires: Superior speech recognition Superior speech synthesis High quality text to speech systems Superior dialog systems

7 Hands-Free Communication 7 1m Bluetooth Mobile Nw. FRE IP BSS MSC PSTN DSL

8 General Requirements for Hands-Free Communication in Cars 8 o Seamless human interaction requires low distraction form the driving task: Superior speech sound quality (in the car and from car to landline) Superior noise cancellation Low delay transmission Wideband speech is highly preferred

9 Why Wideband in Cars? 9 o Wideband services in mobile networks available soon -> o Enabling wideband telephony (100 Hz- 8 khz) in cars Fullband Narrow band (car) Wideband (car) o Efficient use of the high quality audio systems in cars: Efficient use of the high quality audio systems in cars: Getting superior sound quality Increasing speech intelligibility Increasing naturalness of a conversation Reduce drivers distraction due to poor speech quality

10 In-Car Communication 10 1m

11 General Requirements for In-Car Communication 11 o Seamless human interaction requires: Increased intelligibility, esp. from front to back passengers In-Car communication system support not audible for people in the car No artifact under any operation condition Adaptive to different noise/driving situations

12 The Role of ITU-T 12 Test Methods Definition and qualification of speech signal processing ITU-T SG 12 & 16 Optimization of Devices Speech Dialog Systems Speech Terminal Testing ITU-T Focus Goup CarCom

13 The ITU-T Focus Group CarCom 13 Car Industry Parent study group ITU-T SG12 FG-Group CarCOM Suppliers to the car industry Telecommunication industry Algorithm developers Universities

14 ITU-T: Speech Dialog Systems 14 In car systems: Control of car information systems (telephony, navigation, car specific functions, ) Network based systems: Control of network accessible functions (telephony, network based navigation, web-browsing.) Standardization activities in ITU: P.851: Subj. evaluation of dialog systems Suppl.. 24 to P. Rec.: Parameters describing the interaction with spoken dialog systems

15 ITU-T FG CarCOM: Speech Recognition 15 In car systems: Control of car information systems (telephony, navigation, car specific functions, ) Network based systems: Control of network accessible functions (telephony, network based navigation, web-browsing.) Standardization activities in ITU: Workitem ITU-T T focus group CarCom acoustical frontend for speech recognition

16 ITU-T FG CarCOM: Hands-Free Telephony in Cars 16 Integrated systems: Completely integrated in the car infrastructure typically including speech recognition, navigation. After market systems: Independent of car infrastructure, sometimes including speech recognition, navigation Standardization activities in ITU based on work in FG CarCOM: ITU-T T P.1100 for narrowband hands-free ITU-T T P.1110 for wideband hands-free New work on subsystem requirements

17 The Role of HEAD acoustics 17 o Providing expertise for testing and optimization of all speech technologies used in cars o Providing test systems for speech applications to the car industry, suppliers, algorithm developers and chipset manufacturers o Supporting standardization since 20 years based on the expertise and basic research at HEAD acoustics

18 Conclusion 18 o Speech technologies in cars may actively contribute to deploy new services in cars o Speech technologies may help to reduce drivers distraction if properly implemented o HEAD acoustics is providing all types of test services and systems for testing and optimization of speech technologies o ITU-T is an excellent source and basis for speech related technologies and their standardization o FG CarCOM is actively working on advanced standards for hands-free implementations and subsystems, more: