Oleg Zabluda's blog
Tuesday, September 20, 2016
 
"""
"""
Many years ago I heard a radio broadcast featuring a beeping sound that always seemed to come from behind me. The announcer said that the sound would have this quality and it did, even when I turned around. It was a plain beep, and the radio only had one loudspeaker. It was a complete mystery to me then and it still is, so can anyone explain the effect?
[...]
When a sound comes from behind you, it enters the ear canal from a particular angle, causing it to pass over a specific part of the outer ear. [...] To create a sound that constantly seems to be coming from behind you [...]. A microphone is placed inside the ear canal of a mannequin head with a realistically shaped outer ear. This alters any sound [OZ: presumably from behind] before it reaches the microphone [...] When it is played back, you perceive the sound to be behind you, regardless of where your radio is positioned.
"""
https://www.newscientist.com/topic/lastword/its-behind-you/
https://www.newscientist.com/topic/lastword/its-behind-you

Labels:


 
Adaptive cruise control (ACC) timeline
Adaptive cruise control (ACC) timeline
"""
1992: Mitsubishi is the first automaker to offer a Lidar-based distance detection system [...] Marketed as Distance Warning, this early system only warns the driver, without influencing throttle, brakes or gearshifting.

1995: Mitsubishi [...] system controls speed only through throttle control and downshifting, not by applying the brakes.

1997: Toyota [...] (lidar) system [...] controls speed only through throttle control and downshifting, not by applying the brakes.

1999: Mercedes introduces Distronic, the first worldwide radar-assisted ACC
[...]
2000: Toyota [...] laser ACC [...] also applies brakes.
[...]
2003: Toyota shifts from laser (lidar) to radar ACC technology:
[...]
2005: Mercedes-Benz [...] completely halt the car if necessary.
[...]
2006: Toyota [...] radar-assisted system maintains continuous control from speeds of 0 km/h to 100 km/h and is designed to work under repeated starting and stopping situations such as highway traffic congestion.
"""
https://en.wikipedia.org/wiki/Autonomous_cruise_control_system#Timeline
https://en.wikipedia.org/wiki/Autonomous_cruise_control_system#Vehicle_models_supporting_adaptive_cruise_control
https://en.wikipedia.org/wiki/Autonomous_cruise_control_system#Timeline

Labels:



Powered by Blogger