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  • https://doi.org/10.1007/978-981-13-8618-3_87Copy DOI Icon

Detection of DTMF by Using Goertzel Algorithm and Optimized Resource-Sharing Approach

  • Aug 28, 2019
  • B Khaleelu Rehman +4 more
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Abstract

Dual-Tone Multi-frequency (DTMF) is the Standardized term in the telecom industry, where if anyone press a key two tones are generated simultaneously. The DTMF tone detection is an important block in several embedded applications, which works for low-power devices. The DTMF detection using high-end FPGA is carried out by using the Goertzel algorithm and further the design is optimized by using the resource-sharing approach. The resource-sharing approach uses less area, less delay, and low power. Vey few multiplexers, adders are used as compared to the conventional approach of DTMF detection. All the timing diagrams are analyzed using the ModelSim simulation software. Pre-synthesis and post-synthesis are carried out using the XILINX Vivado. Virtex-5 FPGA device is used to check the functionality of the hardware.

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