| Presentation | 2003/9/22 Design of an Audio Signal Level Compressor Using FPGA Takuya MUTOH, Shugang WEI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Conventional audio signal level compressors have been implemented with analog circuits. However, the signal harmonic distortion arises because of the nonlinear input-output characteristic of analog circuits. We design a compressor as digital circuit using a field-programmable-gate-array(FPGA) device. For numerical value calculation, an approximation method using a polynomial operation and a division. A polynomial expression of degree seven can be implemented to enhance the approximation precsion. we design and simulate the circuits with the wordlength 16,24,32 bits. The comparison results of square errors shows that compression characteristics near to the ideal ones are obtained. Horner's rule is also used to calculate the polynomial expression for a compact FPGA implementation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | compressor / limitor / polynomial operation / FPGA / Horner's rule / Newton interpolation |
| Paper # | VLD2003-66 |
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| Conference Information | |
| Committee | VLD |
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| Conference Date | 2003/9/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
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| Paper Information | |
| Registration To | VLSI Design Technologies (VLD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of an Audio Signal Level Compressor Using FPGA |
| Sub Title (in English) | |
| Keyword(1) | compressor |
| Keyword(2) | limitor |
| Keyword(3) | polynomial operation |
| Keyword(4) | FPGA |
| Keyword(5) | Horner's rule |
| Keyword(6) | Newton interpolation |
| 1st Author's Name | Takuya MUTOH |
| 1st Author's Affiliation | Department of Computer Science Gunma Univ.() |
| 2nd Author's Name | Shugang WEI |
| 2nd Author's Affiliation | Department of Computer Science Gunma Univ. |
| Date | 2003/9/22 |
| Paper # | VLD2003-66 |
| Volume (vol) | vol.103 |
| Number (no) | 337 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |