In broadcasting, sound multiplex is a method to deliver alternative audio feeds on television and radio channels.
Usage
This way, a television or radio channel can carry surround sound (like stereo or 5.1 surround sound), or alternative audio programming where an audio track in different language, alternative sports commentary, or audio description for people with visual impairment can be heard.
Standards
| This section is missing information about standard(s) for digital terrestrial TV, and another for satellite television. Please expand the section to include this information. Further details may exist on the talk page. (September 2018) |
- Analogue television
- EIAJ MTS, a standard developed by Electronic Industries Association of Japan (EIAJ) in Japan
- Multichannel television sound (MTS), a standard developed in the United States, and adopted in Argentina, Brazil, Canada, Chile, Mexico, Philippines, Taiwan and United States
- Second audio program (SAP), part of MTS
- Near Instantaneous Companded Audio Multiplex (NICAM), a standard developed in the United Kingdom, and adopted in major European and Asia-Pacific countries
- Zweikanalton (a.k.a. A2 Stereo), a standard developed in Germany, and mainly adopted in Australia, Austria, Germany, Netherlands, South Korea and Switzerland
- Analogue radio
- Subsidiary communications authority (SCA), a standard developed in the United States, and also adopted in Canada
- FMeXtra, a digital application of SCA
- HD Radio, a proprietary digital standard also established and used in the U.S. and Canada
External links
- Pollack, Andrew (16 June 1984). "Japan's stereo TV system". The New York Times. https://www.nytimes.com/1984/06/16/business/japan-s-stereo-tv-system.html. Retrieved 19 September 2018.
Broadcast video formats |
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Television |
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| Analog | | 525 lines |
- System M
- NTSC
- NTSC-J
- PAL-M
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| 625 lines |
- PAL
- System B
- System D
- System G
- System H
- System I
- System K
- PAL-N
- PALplus
- SECAM
- System B
- System D
- System G
- System K
- System L (SECAM-L)
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| Audio |
- BTSC (MTS)
- EIAJ
- NICAM
- SAP
- Sound-in-Syncs
- Zweikanalton (A2/IGR)
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| Hidden signals |
- Captioning
- CGMS-A
- EPG
- GCR
- PDC
- Teletext
- VBI
- VEIL
- VIT
- VITC
- WSS
- XDS
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| Historical |
- Pre-1940
- Mechanical television
- 180-line
- 405-line
- 441-line
- 819-line
- MAC
- MUSE
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| Digital | | Interlaced | |
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| Progressive | |
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| MPEG-2 standards | |
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| MPEG-4 AVC standards |
- ATSC A/72
- DMB
- DTMB
- DVB
- SBTVD
- 1seg
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| HEVC standards | |
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| Audio |
- AC-3 (5.1)
- AC-4
- DTS
- MPEG-1 Audio Layer II
- MPEG Multichannel
- PCM
- LPCM
- AAC
- HE-AAC
- MPEG-H 3D Audio
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| Hidden signals |
- AFD
- Broadcast flag
- Captioning
- CPCM
- EPG
- Teletext
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Technical issues |
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- 9 compromise
- Broadcast-safe
- Digital cinema (DCI)
- Display motion blur
- Moving image formats
- MPEG transport stream
- Reverse Standards Conversion
- Standards conversion
- Television transmitter
- Test card
- Video on demand
- Video processing
- Widescreen signaling
- Templates (Analogue TV Topics)
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Analog television broadcasting topics |
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| Systems |
- 180-line
- 405-line ( System A )
- 441-line
- 525-line ( System J , System M )
- 625-line ( System B , System C , System D , System G , System H , System I , System K , System L , System N )
- 819-line ( System E , System F )
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| Color systems |
- NTSC
- PAL
- PAL-M
- PAL-S
- PALplus
- SECAM
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| Video |
- Back porch and front porch
- Black level
- Blanking level
- Chrominance
- Chrominance subcarrier
- Colorburst
- Color killer
- Color TV
- Composite video
- Frame (video)
- Horizontal scan rate
- Horizontal blanking interval
- Luma
- Nominal analogue blanking
- Overscan
- Raster scan
- Safe area
- Television lines
- Vertical blanking interval
- White clipper
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| Sound |
- Multichannel television sound
- NICAM
- Sound-in-Syncs
- Zweikanalton
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| Modulation |
- Frequency modulation
- Quadrature amplitude modulation
- Vestigial sideband modulation (VSB)
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| Transmission |
- Amplifiers
- Antenna (radio)
- Broadcast transmitter/Transmitter station
- Cavity amplifier
- Differential gain
- Differential phase
- Diplexer
- Dipole antenna
- Dummy load
- Frequency mixer
- Intercarrier method
- Intermediate frequency
- Output power of an analog TV transmitter
- Pre-emphasis
- Residual carrier
- Split sound system
- Superheterodyne transmitter
- Television receive-only
- Direct-broadcast satellite television
- Television transmitter
- Terrestrial television
- Transposer
- Digital television transition
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| Frequencies & Bands |
- Frequency offset
- Microwave transmission
- Television channel frequencies
- UHF
- VHF
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| Propagation |
- Beam tilt
- Distortion
- Earth bulge
- Field strength in free space
- Knife-edge effect
- Noise (electronics)
- Null fill
- Path loss
- Radiation pattern
- Skew
- Television interference
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| Testing |
- Distortionmeter
- Field strength meter
- Vectorscope
- VIT signals
- Zero reference pulse
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| Artifacts |
- Dot crawl
- Ghosting
- Hanover bars
- Sparklies
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Analog and digital audio broadcasting |
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| Terrestrial | | Radio modulation | |
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| Frequency allocations |
- LW (LF)
- MW (MF)
- SW (HF)
- VHF (low / mid / high)
- L band (Ultra high frequency
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| Digital systems |
- CAM-D
- DAB/DAB+
- DRM/DRM+
- FMeXtra
- HD Radio
- CDR
- DVB-T2 Lite
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| Satellite | | Frequency allocations |
- C band
- Ku band
- L band
- S band
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| Digital systems |
- ADR
- DAB-S
- DVB-SH
- S-DMB
- SDR
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| Commercial radio providers |
- Sirius XM Holdings
- SiriusXM Canada
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| Codecs |
- AAC
- AMR-WB+
- HDC
- HE-AAC
- MPEG-1 Audio Layer II
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| Subcarrier signals |
- AMSS
- DirectBand
- PAD
- RDS/RBDS
- SCA/SCMO
- DARC
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Related topics |
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| Technical (audio) |
- Audio data compression
- Audio signal processing
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| Technical (AM stereo formats) |
- Belar
- C-QUAM
- Harris
- Kahn-Hazeltine
- Magnavox
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| Technical (emission) |
- AM broadcasting
- AM expanded band
- Cable radio
- Digital radio
- Error detection and correction
- FM broadcast band
- FM broadcasting
- Multipath propagation
- Shortwave relay station
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| Cultural |
- History of radio
- International broadcasting
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- Comparison of radio systems
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 | Original source: https://en.wikipedia.org/wiki/Sound multiplex in broadcasting. Read more |