Audio signal processing circuit for use in a hearing aid and method for operating same

1988 ◽  
Vol 83 (4) ◽  
pp. 1713-1713
Author(s):  
Leopold Neumann
Keyword(s):  
Signal Processing ◽  
Hearing Aid ◽  
Audio Signal ◽  
Audio Signal Processing ◽  
Signal Processing Circuit ◽  
Processing Circuit

scholarly journals Detection and Correction of Under-/Overexposed Optical Soundtracks by Coupling Image and Audio Signal Processing

2008 ◽  
Vol 2008 (1) ◽  
Author(s):  
Jonathan Taquet ◽  
Bernard Besserer ◽  
Abdelali Hassaine ◽  
Etienne Decenciere
Keyword(s):  
Signal Processing ◽  
Audio Signal ◽  
Audio Signal Processing

scholarly journals Dynamic FPAA-based Mixed-Signal Processing Circuit for Thin-Film CdTe/Lead-Free Perovskite Photodetectors

2021 ◽  
Vol 27 (2) ◽  
pp. 22-30
Author(s):  
Ivailo M. Pandiev ◽  
Mariya P. Aleksandrova
Keyword(s):  
Signal Processing ◽  
Moving Objects ◽  
Cdte Film ◽  
Electrical Signal ◽  
Lead Free ◽  
Mixed Signal ◽  
Precise Position ◽  
Smooth Change ◽  
Signal Processing Circuit ◽  
Processing Circuit

New photodetector structure combining thinned CdTe film with lead-free perovskite photoelectric film was produced and investigated. This setting of the CdTe thickness results in photodetector parameters’ competitiveness to the state-of-the-art in the field of advanced photoelectric materials. The device shows a promising sensitivity of ~40 μA/W, maximum responsivity of 10.6 mA/W at 460 nm, equal rise and fall times of 30 ms, and high linearity (maximum linearization error is less than 0.6 %). However, the optoelectronic performance of CdTe/lead-free perovskite structures integrated with signal processing circuit remains unexplored. For this purpose, Field Programmable Analogue Array (FPAA)-based mixed-signal processing circuit is developed for pulse width modulated electrical signal with duty cycle controlled by the illumination degree of the detecting photoelement. This novel approach guarantees a smooth change of the electrical output at a smooth change of the input illumination between the light and dark switching states and can be practically applied as a precise position detector of moving objects. The paper represents a synergistic connection between microelectronics, electronics, and signal technology.

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