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Custom Silicon Implementation of a Delayless Acoustic Echo Canceller Algorithm

This paper presents a hardware implementation of a high quality acoustic echo canceller for use in handsfree telecommunication systems. The implementation is based on an algorithm with no delay in the signal path, attractive for communication systems where low delay is crucial. However, a zero delay algorithm has higher complexity compared to other canceller solutions. A custom silicon implementat

Energy efficiency in Sub-VT of various 16-bit adder structures in 65 nm CMOS

This manuscript presents simulation results of energy dissipation in sub-threshold (sub-VT ) of various 16-bit adder structures. The architectures designed for the comparative experiments are, a bit-serial, an 8-bit digit-serial and a 16-bit parallel adder structures. The designs are synthesized in a 65 nm low-leakage high-threshold CMOS technology. The results show that an energy minimum operatin

Hyperfine Interaction, Zeeman and Stark Effects for Excited States in Potassium

Using the optical double resonance and level crossing methods, properties of several excited S , P , and D states in 39 K were studied. The S and D states were populated using stepwise excitation with the first P state as an intermediate level. An rf lamp and a CW dye laser were used in the first and second excitation steps, respectively. The studied P states were populated in the cascade decay of