Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1986-06-19
1988-04-19
Ng, Jin F.
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381 69, H04R 2502
Patent
active
047395125
ABSTRACT:
A hearing aid has a housing which includes electronic components such as a microphone, amplifier, power source and receiver, as well as suitable structure for mounting and retaining those components. The housing is inserted in a cavity in a shell. The exterior of the shell is matched to the shape of the auditory canal of the user. The cavity of the shell in which the housing is received tapers to a smallest diameter at a sound discharge end of the shell. The housing also has a smallest diameter at this location. A releasable latch is disposed in the region of the smallest diameter for holding said housing in place within the shell during use, but permitting removal of the housing for repair or replacement without damaging the shell.
REFERENCES:
patent: 3047089 (1962-07-01), Zwislocki
patent: 3513269 (1970-05-01), Wilson
patent: 3852540 (1974-12-01), Diethelm
patent: 4069400 (1978-01-01), Johanson
patent: 4532649 (1985-07-01), Bellafiore
patent: 4539440 (1985-09-01), Sciarra
patent: 4565904 (1986-01-01), Harada
patent: 4617429 (1986-10-01), Bellafiore
Birkholz Ulrich
Hartl Christof
Nassler Peter
Weiss Hans-Joachim
Ng Jin F.
Schroeder L. C.
Siemens Aktiengesellschaft
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