Three dimensional sound recording and reproduction of natural sound field Kimio Hamasaki NHK Science & Technical Research Laboratories Tokyo, Japan
Three dimensional sound recording and reproduction of natural sound field
Kimio Hamasaki NHK Science & Technical Research Laboratories Tokyo, Japan
...
Three dimensional sound recording and reproduction of natural sound field
Kimio Hamasaki NHK Science & Technical Research Laboratories Tokyo, Japan
2005.11.01
International Tonmeister Symposium
1
Contents
Digital broadcasting in Japan Two-dimensional sound recording for 5.1 Three-dimensional sound recording and reproduction
2005.11.01
International Tonmeister Symposium
2
Contents
Digital broadcasting in Japan Two-dimensional sound recording for 5.1 Three-dimensional sound recording and reproduction
2005.11.01
International Tonmeister Symposium
3
In the beginning
NHK started research of multichannel audio from 1970s Japan launched analogue HDTV broadcasting using satellite with digital 3-1 quadraphonic surround sound from 1989
MUSE system for analogue HDTV, DANCE system for 3-1 digital audio
Many productions with 3-1 was started from 1980s And now, 5.1 for digital broadcasting
2005.11.01
International Tonmeister Symposium
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Digital broadcasting in Japan
December 1st in 2000 Broadcasting Satellite digital TV broadcasting
ISDB-S (Intergraded Services Digital Broadcasting for Satellite) BS Digital TV Viewers
NHK has HDTV channel and SDTV channel on ISDB-S
October 10th in 2003 Terrestrial digital audio broadcasting
More than 10 millions households on September of 2005
ISDB-Tsb (ISDB for Terrestrial Sound Broadcasting)
December 1st in 2003 Terrestrial digital TV broadcasting
2005.11.01
ISDB-T (ISDB for Terrestrial) ISDB-C (ISDB for Cable)
International Tonmeister Symposium
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ISDB-Tsb
Transmission band width
Modulation mode
MPEG-2 System
Audio coding
DQPSK, QPSK, 16QAM,64QAM
Multiplex mode
Segmented OFDM
Carrier modulation
430kHz (1 segment) / 1.3MHz (3 segments)
MPEG-2 AAC (Advanced Audio Coding)
Transmission data rate
2005.11.01
300kbps (1 segment) / 900kbps (3 segments) International Tonmeister Symposium
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Common receiver for both Digital TV & Radio ISDB-T（UHF） 13Segments
DTV Receiver
ＴＶ ISDB-Tsb 3segments
3segments receiver
Radio 1 segment receiver (V+UHF)
ISDB-Tsb（VHF） 1 segment
Radio 2005.11.01
International Tonmeister Symposium
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Audio Coding Sampling Frequency 48kHz、44.1kHz、32kHz of input Sampling frequency for coding
128kbits/s or 256kbits/s or 384kbits/s or below below below Mode for audio quality
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Mode 1 High quality stereo 192 kbits/s or over
Mode 2 Others except Mode1and Mode3
International Tonmeister Symposium
Mode 3 Half rate
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Contents
Digital broadcasting in Japan Two-dimensional sound recording for 5.1
How to reproduce the spatial impression with 5.1 surround sound Practical & natural music recording techniques with 5.1 surround sound recording in a concert hall to reproduce adequate spatial impression
Three-dimensional sound recording and reproduction
2005.11.01
International Tonmeister Symposium
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How to reproduce two-dimensional spatial impression
Principal aim of multichannel audio
Reproducing the spatial impression of a reverberant sound filed
How to reproduce spatial impression with multichannel audio
2005.11.01
How many loudspeakers are necessary and how to arrange those around listener Is 5.1 surround sound system adapted to practical applications for these issues? Microphone techniques based on above consideration to catch the spatial impression International Tonmeister Symposium
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The minimum number of loudspeakers and its arrangement for reproducing the spatial impression of diffuse sound field
in Anechoic Room
?? Reference =24
Comparing Reducing…
2005.11.01
International Tonmeister Symposium
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Procedure of the Experiments “Double-blind triple-stimulus with hidden reference”
