Speaking partner: an ARM7-based multimedia handheld device

Author

Sung, Wonyong ; Chang, Hoseok ; Lee, Wonchul ; Ryu, Suhong

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ., South Korea

fYear

2002

fDate

16-18 Oct. 2002

Firstpage

218

Lastpage

221

Abstract

We have implemented MP3 audio decoding, speech recognition, and image compression programs for a handheld foreign language learning device, Speaking Partner. The hardware is based on a relatively low-performance RISC CPU, ARM7TDMI. Several previously known software optimization techniques for RISC processors as well as a few algorithm specific optimization methods are employed. The number of clock cycles for the implementation is more significantly reduced by employing block data transfer instructions, rather than by reducing the accuracy of multiplication. The implementation results show that the ARM7 based CPU can conduct multimedia applications in a multi-tasking mode. The power consumption for each activity and each hardware component is also analyzed.

Keywords

audio signal processing; data compression; decoding; educational aids; image coding; multimedia systems; reduced instruction set computing; speech recognition; ARM7-based multimedia handheld device; ARM7TDMI; MP3 audio decoding; RISC processors; Speaking Partner; algorithm specific optimization methods; block data transfer instructions; clock cycles; handheld foreign language learning device; image compression programs; low-performance RISC CPU; multi-tasking mode; multimedia applications; power consumption; software optimization techniques; speech recognition; Decoding; Digital audio players; Handheld computers; Hardware; Image coding; Natural languages; Optimization methods; Reduced instruction set computing; Software algorithms; Speech recognition;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems, 2002. (SIPS '02). IEEE Workshop on

ISSN

1520-6130

Print_ISBN

0-7803-7587-4

Type

conf

DOI

10.1109/SIPS.2002.1049712

Filename

1049712