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• W1983163775 abstract "Auditory prosthesis (AP) is a widely used electronic device for patients suffering with severe hearing loss by electrically stimulating the auditory nerve using an electrode array surgically placed inside the inner ear. The AP also known as cochlear implant (CI) mainly contains external Body worn Speech Processor (BWSP) and internal Implantable Receiver Stimulator (IRS). BWSP receives an external sound or speech and generates encoded speech data bits for transmission to IRS via Radio Frequency transcutaneous link for excitation of electrode array placed in the inner ear. Development of BWSP and IRS involves normally the use of either standard microprocessor or microcontroller or digital signal processor (DSP) or FPGA or ASIC devices. Sometimes the performance of the AP system using the standard processors cannot meet the requirement of the intended application. As the selected DSP processor (ADSP2185) from Analog Devices Inc. solely cannot perform the purpose of the speech processor for auditory prostheses, the Xilinx FPGA is added to fulfill the requirement. Combination of a standard processor such as DSP and FPGA may lead to the solution in both prototyping and target operational system. The ADSP2185 processor is used to realize the Continuous Interleaved Sampling (CIS) algorithm for speech signal processing and FPGA is used to realize the speech data encoding algorithm. This paper introduces practical implementations of digital speech processor for use in AP based on DSP ADSP-2185 and Xilinx's FPGA Spartan 3 with the description of practical data. The combination of ADSP2185 and FPGA is used to develop Speech Processor for an auditory prosthesis. FPGA implementation of speech data encoder is initially simulated using ModelSim and interfaced with ADSP2185. The entire embedded application is tested with real time speech signals by using laboratory model IRS and satisfactory results are observed." @default.
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• W1983163775 date "2012-03-01" @default.
• W1983163775 modified "2023-09-25" @default.
• W1983163775 title "A practical approach to speech processor for auditory prosthesis using DSP and FPGA" @default.
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• W1983163775 doi "https://doi.org/10.1145/2188376.2188377" @default.
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