Study on AMR vocoder and its multi-channel implementation based on TMS320 C6000;

This paper begins with an analysis of VAD(Voice Activity Detector) algorithm in AMR Vocoder(speech codec standard in WCDMA), with emphasis on the feature and fundamental principles of it, followed by a revised method that have better performance in simulatio.

Research on Mathematical Model of Inductive Inductance Sensors;

the measuring circuit of inductance sensor has been analyze,discussed the measure to level off the amplitude of sine wave generating circuit,introduce the method to improved the performance of measuring circuit by used digital phase sensitivity detection,and gave the data of static testing.

A signal acquisition card for inductance sensor based on PCI bus is designed in this paper.

This paper presents an inductive transducer with simple structure, stable performance and high accuracy, and introduces a new straightness measurement method combing the STP and GTP and featuring convenient operation, high confidence and suitable for short workpiece measurement.

The results of experiments have shown that the available linear range of output voltage of the optimized inductive transducer with solenoid pitch varying in o.

According to the principle of inductance transducer,an installation of measuring micro-displacement was made.

This article introduces the components and working principles of an inductance transducer, then analyzes in detail the working process of using inductance transducer to realize the automatic control of newspaper shelf and finally describes how to choose some main apparatus and to debug the circuit.