JPS643229U - - Google Patents

Info

Publication number
JPS643229U
JPS643229U JP1987094334U JP9433487U JPS643229U JP S643229 U JPS643229 U JP S643229U JP 1987094334 U JP1987094334 U JP 1987094334U JP 9433487 U JP9433487 U JP 9433487U JP S643229 U JPS643229 U JP S643229U
Authority
JP
Japan
Prior art keywords
signal
modulator
audio
modulation
multiplex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1987094334U
Other languages
English (en)
Other versions
JPH0424675Y2 (ja
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987094334U priority Critical patent/JPH0424675Y2/ja
Publication of JPS643229U publication Critical patent/JPS643229U/ja
Application granted granted Critical
Publication of JPH0424675Y2 publication Critical patent/JPH0424675Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Stereo-Broadcasting Methods (AREA)

Description

【図面の簡単な説明】
第１図は本考案によるＦＭ多重信号発生装置の
構成を示すブロツク図、第２図は多重ＦＭ信号の
発生方式の原理を説明するブロツク図、第３図は
ＦＭ多重信号の周波数分布図、第４図はＦＭ多重
のベースバンド信号の波形図、第５図は周波数変
調器の信号対周波数特性図である。 １……音声入力ＥＲ、２……音声入力ＥＬ、３
……マトリクス、４……和信号ＥＭ、５……差Ｅ
Ｓ、６……パイロツト信号１９ｋHz（ｆｐ）、７
……３８ｋHz発生器（２ｆｐ）、８……振幅変調
器、９……加算回路、１０，１４……ＦＭ変調器
、１１……ＦＭ出力（音声）ＭＡ、１２……多重
データ信号、１３……極性変調（コード化）器、
１５……多重データ信号ＦＭ波ＭＤ、１６……乗
算回路、１７……帯域通過フイルタ、１８……総
合変調出力、１９……周波数逓倍（７６ｋHz発生
器）、２４……音声信号（ステレオ）ｅＡ′、２
５……音声用ＦＭ変調器、２６……多重信号（７
６ｋHz変調）ｅＤ、２７……多重用ＦＭ変調器、
２８……乗算回路、２９……帯域通過フイルタ、
３０……総合ＦＭ信号。

Claims (1)

  1. 【実用新案登録請求の範囲】 (a) 音声信号をＦＭ変調する音声用変調器、 (b) 多重信号源をＦＭ変調する多重用ＦＭ変調
    器、および (c) 上記音声用ＦＭ変調器による音声変調信号
    と上記多重用ＦＭ変調器による多重変調信号を乗
    算する乗算回路 を具備することを特徴とするＦＭ多重信号発生装
    置。
JP1987094334U 1987-06-19 1987-06-19 Expired JPH0424675Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987094334U JPH0424675Y2 (ja) 1987-06-19 1987-06-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987094334U JPH0424675Y2 (ja) 1987-06-19 1987-06-19

Publications (2)

Publication Number Publication Date
JPS643229U true JPS643229U (ja) 1989-01-10
JPH0424675Y2 JPH0424675Y2 (ja) 1992-06-11

Family

ID=31318848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987094334U Expired JPH0424675Y2 (ja) 1987-06-19 1987-06-19

Country Status (1)

Country Link
JP (1) JPH0424675Y2 (ja)

Also Published As

Publication number Publication date
JPH0424675Y2 (ja) 1992-06-11

Similar Documents

Publication Publication Date Title
US3761631A (en) Synthesized four channel sound using phase modulation techniques
EP1873943A2 (en) Multichannel spectral mapping audio apparatus and method
GB946707A (en) Improvements in stereophonic broadcasting system
US3046337A (en) Stereophonic sound
JPS643229U (ja)
JPS599962B2 (ja) オンセイシンゴウノ キロクサイセイソウチ
CA2067414A1 (en) Psycho acoustic pseudo stereo foldback system
JPS645238A (en) 2nd sound multiplex broadcast equipment for fm broadcast
JPH0641405Y2 (ja) ステレオ放送用多重化装置
US5999618A (en) Telephone interface for simultaneous audio presentation at separate locations utilizing amplitude modulated carrier signals
JPS54117602A (en) Sound signal transmission unit
JPS6035659U (ja) 信号伝送システム
JP2738480B2 (ja) 周波数帯域圧縮無線通信方式
JP2640987B2 (ja) ステレオ方式
JPS635360Y2 (ja)
JPS61156331U (ja)
JPS5773576A (en) Signal generator
US3904828A (en) Compatible system for transmitting and receiving quadraphonic signals
JP2640811B2 (ja) オーデイオ信号の記録／再生方式
JPS5919520B2 (ja) 音声信号送信装置
JPS6315777B2 (ja)
EP0031692A3 (en) An electronic circuit for simulating sound from a rotary loudspeaker
Antill et al. DSP-based FM stereo generator for digital studio-to-transmitter link
JPS54119201A (en) Stereo headphone device
KR20010083804A (ko) 동기식 진폭 변복조를 이용한 생체 신호 모뎀