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Рассматривается реализация цифрового алгоритма адаптации в полосе частот в реальном масштабе времени. Алгоритм адаптации выполняет корректировку оценок значений весовых коэффициентов подачей на фильтр выборки входного сигнала и выходного сигнала ошибки процесса оценивания. Общий подход к реализации секции фильтра КИХ – типа рассматривается на примере использования одиночного цифрового умножителя. Каждая пара входных воздействий последовательно поступает на умножитель. Произведение накапливается. Произведение «время – ширина полосы частот» увеличивают каскадированием фильтров без влияния на частоту выборки. Это приводит к применению дополнительных умножителей и увеличению стоимости системы и потребляемой мощности. Альтернативные схемы для реализации фильтра имеют недостатки в отношении их суммарной эффективности.

Summary

The implementation of digital adaption algorithm at real-time bandwidths is considered. It is relatively simple in a computational sense. The main computation is determined by the linear convolution of the input signal samples with the stored filter weights of the finite impulse response (FIR) filter. The common approach for implementing the FIR filter section uses a single digital multiplier. The inputs ( signal and weight ) are presented to the multiplier sequentially. The multiplication product is accumulated. The time-bandwidth product is extended by cascading filter without affecting the sampling frequency. Alternative schemes for filter have overall circuit efficiency trade-offs.

Unit 4. Making up a dialogue

Task 1. Read and translate the following summary patterns given below.

Task 2. Analyze the structure of text compression and transformation.

Summary

The interaction between man and machines has become an important topic for the robotic community. It can generalize the use of robots. For active human-robot (H/R) interaction scheme, the robot needs to detect human faces in its vicinity and then interpret canonical gestures of the tracked person assuming this interlocutor has been beforehand identified. We depict functions suitable to detect and recognize faces in video stream and then focus on face and hand tracking functions. An efficient colour segmentation is based on a watershed on the skin-like coloured pixels. A new measurement model is proposed to take into account both shape and colour cues in the particle filter to track face or hand silhouettes in video stream. An extension of the basic condensation algorithm is proposed to achieve recognition of the current hand posture and automatic switching between multiple templates in the tracking loop. Results of tracking and recognition using show the process robustness in cluttered environments and in various light conditions. The limits of the method are to be discussed in future.

Summary

Maes's method is based on interaction with the user. It is realized as the organizer of e-mail and the working schedule. Its "intellectual agents" can evolve to a better performing versions by a principal of genetic selection. Grossberg's model of artificial intelligence is based on imitation of brain cells work. It uses permanent and temporary memory. It is applied in the robots recognizing objects while moving. Conrad's "computer-in-jar" replaces electronic devices altogether with the chemical blocks. It works according to the same type of molecules interaction. It is capable to perform operations inaccessible to conventional computers. These developments are created for optimization and increasing artificial intelligence opportunities.