Front End DSP Audio Technologies for In-Car Applications Alango DSP Software for Sound Enhancement Since 2002
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Front End DSP Audio Technologies For In-Car Applications Alango DSP software for sound enhancement Since 2002 HQ, R&D: Haifa, Israel • Over 15 years of practical experience • Main areas: automotive, mobile, accessories, hearing • 35 Alango employees in 2 locations R&D: St. Petersburg, Russia www.alango.com Alango solutions portfolio Voice Voice Communication Package Communication Sound Reinforcement Package Speech Recognition Voice Enhancement Package Enhancement Voice Activity Detector Music Automatic Volume and eQ Enhancement MuRefiner™ Sound PersonaSound™ Personalization www.alango.com 3 Voice Communication Voice Communication Package (VCP) VCP: Essential technologies for automotive handsfree systems • Enables crystal clear, full-duplex, noise-free voice calling in car • Reduces different types of noises, cancels echos, enhances speech www.alango.com 4 Voice Communication Voice Communication Package (VCP) M Acoustic Adaptive Automatic Gain Noise Control I Echo Directional EQ C Suppression Dynamic Range (S) Cancellation Microphone Control TX Automatic Automatic Loudspeaker Gain Control Noise Volume and EasyListen™ EQ Correction Dynamic Range Suppression Equalization Control RX Over 20 million cars use Alango VCP (Jan. 2019) www.alango.com 5 Next Generation Handsfree Voice Communication Dual-microphone VCP with Dual Mic Array beamforming Improved noise reduction: • Road, engine, and wind noises • Rear passenger voices Driver-selectable mic zones: • Driver’s voice enhanced • Passenger’s voice enhanced Driver Passenger Mic Beam Mic Beam • Both voices enhanced www.alango.com 6 Voice Communication VCP Auto Industry Compliance Class “Type 1”: Full Duplex Echo Cancellation ITU-T VDA 1.6 P.1100/P.1110 www.alango.com 7 Voice Communication VCP eCall Compliance eCall GOST R55531 ITU-T P.1140 www.alango.com 8 VCP for Smart Phone Enabled Display Audio www.alango.com 9 Voice Communication Communication Problems Inside the Car Raises voice Repeats herself Strains her attention Turns backwards www.alango.com 10 Voice Communication Sound Reinforcement Package (SRP) Acoustic Noise Feedback Suppression Cancellation Acoustic feedback Automatic Mixer Volume and Equalization Music Output www.alango.com 11 In-Car Communication “ICC” Auto Industry Compliance Alango SRP complies with Head Acoustics HQS-ICC: preliminary quality standard for two-way in-car communication performance www.alango.com 12 Speech Recognition Improvement with VEP Noisy in-car environments: especially challenging for speech recognition engines Alango Voice Enhancement Package (VEP) • Cleans and enhances the voice signal • Leads to higher accuracy of speech recognition • Works with any speech recognition engine Voice Enhancement Package M Acoustic Adaptive Automatic Gain Noise Control TO I Echo Directional EQ C Suppression Dynamic Range ASR/ (S) Cancellation Microphone Compression KWR www.alango.com 13 Speech Recognition Enhancement Objective speech enhancement tests TEST SCENARIO: Microphone By what measure is Array speech recognition rate in cars improved by Alango preprocessing technologies? TEST STANDARD: Using Google speech recognition, Mouth Simulator only phrases recognized exactly correctly are counted www.alango.com 14 Speech Recognition Enhancement Test Scenarios Single Mic Dual Mic with noise with noise suppression suppression km/h km/h km/h km/h Parked Driving www.alango.com 15 Phrases recognized exactly 1-Mic 1-Mic+NS ADM ADM+NS • Stationary car 98% 100% 97% 94% 78% 80% 60% 40% 20% 0% Driving Speed www.alango.com 16 Phrases recognized exactly 1-Mic 1-Mic+NS ADM ADM+NS • Driving 100% 88% 80% 72% 60% 57% 33% 40% 20% 0% Driving Speed www.alango.com 17 Music Enhancement MuRefiner MuRefiner makes in-car music more enjoyable by brightening vocals, enhancing bass, and widening the stereo field. Stereo Spectral Bass Normalizer Compander Corrector www.alango.com 18 Music Enhancement Automatic Volume and eQualization AVQ dynamically amplifies and equalizes music content according to actual in-cabin noise characteristics Quiet Driving Noisy Driving Noisy Driving Conditions Conditions (original) Conditions dB dB dB (equalized) 90 90 90 80 Music above noise 80 Music 80 Music above 70 70 masked by 70 noise 60 60 noise 60 50 50 50 40 40 40 30 30 30 20 20 20 0KHz 4KHz 8KHz 12KHz 16KHz 20KHz 0KHz 4KHz 8KHz 12KHz 16KHz 20KHz 0KHz 4KHz 8KHz 12KHz 16KHz 20KHz Music Noise AVQ On www.alango.com 19 Music Enhancement Automatic Volume and eQualization • Provides equal perceptual loudness and sound Ambient coloration of music in different Noise driving conditions Stereo Echo Noise • Responds directly to in-cabin Cancellation Estimation noise level and spectrum, Echo Audio/ rather than RPM-based noise Music estimation Adaptive L • Improves intelligibility of Frequency Equalization R speech, such as news radio, navigation prompts, voice calls www.alango.com 20 Sound Personalization Automotive PersonaSound We all hear differently. Without sound personalization, drivers miss out on important sounds, music enjoyment With PersonaSound, all sounds are automatically tuned to match the driver’s hearing profile www.alango.com 21 Sound Personalization Automotive PersonaSound Use the App to PersonaSound: Upload Hearing Profile to Car Test Hearing Obtain Preference Hearing Results www.alango.com 22 Why work with Alango? Our technologies are field proven 20 million cars use Alango technologies Our software is easy to implement Extensive development tools and documentation available to ease tuning and integration Our software is efficient Low computational footprint; wide range of supported DSP/MCU platforms www.alango.com 23 IP Partners www.alango.com 24 Selected Customers www.alango.com 25 OEMs using Alango Technologies www.alango.com 26 Alango inside Citroen C4 Aircross Chevrolet Aveo Chevrolet Captiva Chevrolet Chevrolet Spark Chevrolet Honda CR-Z Honda N-Box New Cruze New Spark Hyundai Accent Hyundai New Avante Hyundai Equus Hyundai Hyundai Hyundai i30 Hyundai i40 Hyundai IONYQ New Genesis Grandeur HG Hyundai ix25 Hyundai ix35 Hyundai Santa-Fe Hyundai Sonata Hyundai Sonata LF Hyundai Sonata YF Hyundai iMax/iLoad Hyundai Veracruz Kia Carens Kia New Carnival Kia K3 Kia K5 Kia K7 Kia K9 Kia Mohave Kia Niro Hybrid Kia Ray Kia Sedona Kia Sorento Kia Soul Kia New Soul Kia New Soul EV Kia Sportage R New Kia Sportage www.alango.com 27 Alango inside GM Alpheon Isuzu Elf MAN TGS35.500 MG 6 MG ZS MG HS Mitsubishi Mitsubishi Lancer Outlander Nissan Kicks Nissan Opel Adam Opel Astra Opel Junior Opel Meriva Opel Zafira Qoros 5 SUV Leaf Renault Samsung Renault Samsung Renault Samsung Renault Samsung Roewe i5 Roewe Marvel X Roewe RX8 Ssangyong Motors SM5 Motors QM3 Motors QM5 Motors SM3 Chairman Ford Maverick Ssangyong Ssangyong Ssangyong Suzuki S-Cross Volkswagen Volkswagen Maxus G50 Korando Rexton Tivoli Amarok Passat Baijun RS-5 Toyota Rav4 www.alango.com 28 Thank You Any Questions? Don’t hesitate to contact us. We are always looking forward to hearing from you! Email us your questions, comments, thoughts, or proposals: [email protected] General enquires [email protected] Sales enquiries [email protected] Engineering enquiries Main office: +972 (4) 8580 743 Fax: +972 (4) 8580 621 Web: alango.com www.alango.com 29.