As majority of the compression algorithms are implementations for CPU architecture, the primary focus of our work was to exploit the opportunities of GPU parallelism in audio compression. This paper presents an implementation of Apple Lossless Audio Codec (ALAC) algorithm by using NVIDIA GPUs Compute Unified Device Architecture (CUDA) Framework. The core idea was to identify the areas where data parallelism could be applied and parallel programming model CUDA could be used to execute the identified parallel components on Single Instruction Multiple Thread (SIMT) model of CUDA. The dataset was retrieved from European Broadcasting Union, Sound Quality Assessment Material (SQAM). Faster execution of the algorithm led to execution time reduction when applied to audio coding for large audios. This paper also presents the reduction of power usage due to running the parallel components on GPU. Experimental results reveal that we achieve about 80-90% speedup through CUDA on the identified components over its CPU implementation while saving CPU power consumption.
Force sensor from interlink that use square pad forforce sensing is useful for many applications, as the resolution of this sensor continues and FPGA is digital, an ADC is required to deal with such sensor and as the embedded ADC of Spartan 3E kit need complex signals synchronization to work.This paper present a hardware design and optimized implementation based VHDL coding of control unit that make the ADC of Spartan 3E kit operate in real time. The system use Moore states machine style for generating ADC synchronization signals. Also, the result observed via new approach, which is instead of using chip scope for displaying values of ADC, LabVIEW FPGA environment is used so it"s possible to display result on PC via USB. The control is optimizedand efficient due to using only 1% of FPGA chip and the measured force can be displayed in real time and the proposed control unit can be work as standalone or coprocessor architecture. General TermsFPGA, VHDL, LabVIEW FPGA, Force, Sensor.
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