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Kawitkar, R. S.
- Implementation of MP3 Decoder on ARM
Authors
1 Department of ETC, SAOE, Pune, IN
2 Pune University, IN
Source
Digital Signal Processing, Vol 4, No 6 (2012), Pagination: 234-237Abstract
This paper proposes implementation of MP3 decoder on processor core. Due to the high cost of ASIC, FPGA chips, MP3 decoders are mostly implemented through software rather than hardware. This makes it necessary and demanding to implement and optimize the MP3 decoder for a given platform. This paper describes the challenges and optimization techniques useful for implementing the MP3 decoder algorithm on the RISC-based ARM processor. The goals for this work have been the following: One goal has been to compile an introduction to the subject of MP3 encoding and decoding as well as psychoacoustics. Another goal has been to search for algorithms that can be used to implement the most demanding components of an MP3 decoder. A third goal is to evaluate their performance with regard to speed, memory requirements, and complexity by implementing it on hardware. ARM processor is used for MP3 solution has a significant advantage over DSP-based implementations, is that all the required processing can be performed on the ARM as a standalone processor. This helps reduce power consumption, minimizes chip area and considerably simplifies the hardware and software development process.
Keywords
MP3 Decoder, Optimization, Implementation, ARM Processor, etc.
- A Survey: Denoising Algorithm for Acoustics Signal
Authors
Source
Digital Signal Processing, Vol 10, No 6 (2018), Pagination: 102-104Abstract
Underwater acoustics signal is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water and its boundaries. The water may be in the dam, ocean, a lake or a tank. There are some frequencies affiliated with underwater acoustics are between 10 Hz and 1 MHz .There are some major steps for underwater signal de-noising. The first step deals with signal pre-processing which including amplifying, filtering, and take use of analogy / digital (AD) technique to save signals as digital file. The underwater acoustic signal is affected by ocean interference and ambient noise disturbance during its propagation in ocean. Acoustic signal are the most important Parameter to convey data in underwater domain as a practical method. But the dams and reservoirs are increasingly exposed to sounds from human activities, such as shipping, Self-noise other different noise.