Encoding apparatus having an acoustic member with mirror-image t

Details Encoding apparatus having an acoustic member with mirror-image t Encoding apparatus having an acoustic member with mirror-image t

1981-11-02

1984-02-07

Groody, James J.

Communications: electrical

Audible indication

Percussion-type sound producer

178 17C, 340365S, G06F 302, H04L 1503

Patent

active

044306440

ABSTRACT:
A simplified, symmetrical encoding apparatus of the acoustic rod type with polarized output signals, e.g., where key-actuated strikers impact an acoustic bar having a number of differently-shaped tabs on the bar, the impact giving rise to divergent acoustic waves sensed by a transducer at each end of the bar. Providing paired sets of a non-polarizing tab and oppositely-oriented raked (polarizing) tabs in mirror image form at desired locations on right and left halves of the bar, preferably with a first tab located at the bar's midpoint, facilitates distinguishing between impacts on the different tabs.

REFERENCES:
patent: 4378552 (1983-03-01), Jalbert
patent: 4381501 (1983-04-01), Pajer et al.

Affiliated with

Also associated with

Rating

Encoding apparatus having an acoustic member with mirror-image t does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Encoding apparatus having an acoustic member with mirror-image t, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoding apparatus having an acoustic member with mirror-image t will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2163941