- NTT‘S Proprietary Hybrid Structure of Beam Forming and Spectrum Filtering -
(1)Automotive Solution: Microphone Module for Car Navigation System
NTTs Intelligent Microphone shows very much Superior performance under the noisy environment caused by air conditioner, higher speed driving.
(2)Auto tracking Solution: IoT home appliances system and robot.
High performance noise suppression that shows high speech recognition rate under various sound/noise/echo environments. It has been verified by various speech recognition engines such as Google, Siri, ALEXA. Spectral filtering based on spectrum estimation by direction estimation is realized with only 3 microphones.
(3)Tablet Solution: Karaoke remote control.
It is possible to extract only the necessary sound even in the large volume of 100 DB such as karaoke box and night club.
(4)Headset Solution: At noisy construction sites and factories
Press noise in the factory and noise such as heavy machinery can also be suppressed, so comfortable speech and speech recognition on site.
We can provide Library Software for your designated chip. Software is tuned for your required application.
(1)Required specification for Chip
2 microphones:20 to 30 MIPS, Memory 75kbytes
3 microphones:50 to 100 MIPS, Memory 85kbytes
(more ability is required if you utilize echo canceller or direction estimation function)
(2)Required specification for Module
At least 3 microphone is needed if you are to use “Direction Estimation”. Quality variation within 1dB is needed between plural microphones.
Ordinal Amplifier, and Codec is needed.
(3)Required specification for Android
At least 3 microphone is needed if you are to use “Direction Estimation”.
Quality variation within 1dB is needed between plural microphones.
CPU:Coretex A series or more