New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and...

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15 NTT DoCoMo Technical Journal Vol.2 No.4

Transcript of New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and...

Page 1: New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and Main Profile. It supports sampling frequencies between 8 kHz and 96 kHz, 148 channels,

14NTT DoCoMo Technical Journal Vol.2 No.4

15NTT DoCoMo Technical Journal Vol.2 No.4

ノート
The use of audio coding technology is spreading quickly on the Internet and in other areas to compress CD-quality audio signals down to around 100 kbit/s. This article explains the fundamental technologies for compressing audio signals based on human psycho-acoustic models, the MPEG international standard and various de-facto standards, as well as applications in mobile communications.
Page 2: New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and Main Profile. It supports sampling frequencies between 8 kHz and 96 kHz, 148 channels,

16NTT DoCoMo Technical Journal Vol.2 No.4

17NTT DoCoMo Technical Journal Vol.2 No.4

New Technical Report

Page 3: New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and Main Profile. It supports sampling frequencies between 8 kHz and 96 kHz, 148 channels,

16NTT DoCoMo Technical Journal Vol.2 No.4

17NTT DoCoMo Technical Journal Vol.2 No.4

New Technical Report

Page 4: New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and Main Profile. It supports sampling frequencies between 8 kHz and 96 kHz, 148 channels,

18NTT DoCoMo Technical Journal Vol.2 No.4

19NTT DoCoMo Technical Journal Vol.2 No.4

New Technical Report

Page 5: New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and Main Profile. It supports sampling frequencies between 8 kHz and 96 kHz, 148 channels,

18NTT DoCoMo Technical Journal Vol.2 No.4

19NTT DoCoMo Technical Journal Vol.2 No.4

New Technical Report

Page 6: New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and Main Profile. It supports sampling frequencies between 8 kHz and 96 kHz, 148 channels,

20NTT DoCoMo Technical Journal Vol.2 No.4

21NTT DoCoMo Technical Journal Vol.2 No.4

New Technical Report

Page 7: New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and Main Profile. It supports sampling frequencies between 8 kHz and 96 kHz, 148 channels,
Page 8: New Technical Report · 2011. 1. 13. · Sampling Rate (SSR) Profile, Low Complexity Profile and Main Profile. It supports sampling frequencies between 8 kHz and 96 kHz, 148 channels,

22NTT DoCoMo Technical Journal Vol.2 No.4

23NTT DoCoMo Technical Journal Vol.2 No.4