JP2008538063A - ハイブリッドラジオ波形のアナログ及びデジタル音声を整合する方法 - Google Patents
ハイブリッドラジオ波形のアナログ及びデジタル音声を整合する方法 Download PDFInfo
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- JP2008538063A JP2008538063A JP2008505305A JP2008505305A JP2008538063A JP 2008538063 A JP2008538063 A JP 2008538063A JP 2008505305 A JP2008505305 A JP 2008505305A JP 2008505305 A JP2008505305 A JP 2008505305A JP 2008538063 A JP2008538063 A JP 2008538063A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000005236 sound signal Effects 0.000 claims abstract description 139
- 238000001914 filtration Methods 0.000 claims description 13
- 230000004044 response Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 4
- 238000005314 correlation function Methods 0.000 claims description 3
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- 238000013459 approach Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 13
- 238000012545 processing Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 7
- 238000012935 Averaging Methods 0.000 description 6
- 230000001934 delay Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
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- 238000012360 testing method Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/12—Arrangements for observation, testing or troubleshooting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/56—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54
- H04H60/58—Arrangements characterised by components specially adapted for monitoring, identification or recognition covered by groups H04H60/29-H04H60/54 of audio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/18—Aspects of broadcast communication characterised by the type of broadcast system in band on channel [IBOC]
- H04H2201/183—FM digital or hybrid
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/18—Aspects of broadcast communication characterised by the type of broadcast system in band on channel [IBOC]
- H04H2201/186—AM digital or hybrid
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- Signal Processing (AREA)
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- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Circuits Of Receivers In General (AREA)
- Electromechanical Clocks (AREA)
Abstract
Description
Claims (19)
- ハイブリッドラジオシステムにおけるアナログ音声信号とデジタル音声信号との時間整合を検知する方法であって、
アナログ音声信号にフィルタリングを施してフィルタリング済みアナログ音声信号を発生させ、
デジタル音声信号にフィルタリングを施してフィルタリング済みデジタル音声信号を発生させ、
フィルタリング済みアナログ音声信号とフィルタリング済みデジタル音声信号とを用いてアナログ音声信号とデジタル音声信号の間の時間整合を表す複数の相関係数を計算するステップより成る時間整合の検知方法。 - 相関係数に応答してアナログ音声信号及び/またはデジタル音声信号のタイミングを調整するステップをさらに含む請求項1の方法。
- アナログ音声信号とデジタル音声信号とは同一のサンプリングレートでサンプリングされる請求項1の方法
- 相関係数は規準化された相互相関関数を用いて求められる請求項1の方法。
- アナログ音声信号及びデジタル音声信号の直流成分は相関係数を求める前に除去される請求項1の方法。
- 相関係数はアナログ音声信号とデジタル音声信号とが時間整合されると1に近づき、相関係数は時間整合エラーが増加するにつれて小さくなる請求項1の方法。
- 相関係数のピークをサーチした後、相関係数に低い値に制限を施すステップをさらに含む請求項1の方法。
- フィルタリングステップは約600Hzと約1600Hzとの間のパスバンドを有するフィルタを用いる請求項1の方法。
- 相関係数に移動平均を用いてフィルタリングを施すことにより整合されないサンプル数を表す出力信号を発生させるステップをさらに含む請求項1の方法。
- ハイブリッドラジオシステムにおけるアナログ音声信号とデジタル音声信号とのレベル整合を検知する方法であって、
アナログ音声信号にフィルタリングを施してフィルタリング済みアナログ音声信号を発生させ、
デジタル音声信号にフィルタリングを施してフィルタリング済みデジタル音声信号を発生させ、
音声セグメントについてアナログ音声信号の信号出力とデジタル音声信号の信号出力とを計算し、
アナログ音声信号の信号出力とデジタル音声信号の信号出力の比率を用いてアナログ音声信号とデジタル音声信号とのレベル整合を表す信号を発生させるステップより成るレベル整合検知方法。 - レベル整合を表す信号に応答してアナログ音声信号及び/またはデジタル音声信号のレベルを調整するステップを含む請求項10の方法。
- ハイブリッドラジオシステムにおけるアナログ音声信号とデジタル音声信号との時間整合を検知する装置であって、
プロセッサアナログ音声信号にフィルタリングを施してフィルタリング済みアナログ音声信号を発生させる第1のフィルタと、
デジタル音声信号にフィルタリングを施してフィルタリング済みデジタル音声信号を発生させる第2のフィルタと、
フィルタリング済みアナログ音声信号とフィルタリング済みデジタル音声信号とを用いてアナログ音声信号とデジタル音声信号の間の時間整合を表す複数の相関係数を計算するプロセッサとより成るレベル整合検知装置。 - 相関係数に応答してアナログ音声信号及び/またはデジタル音声信号のタイミングを調整するプロセッサをさらに含む請求項12の装置。
- 相関係数のピークを検知するピーク検知器をさらに含む請求項12の装置。
- 第1と第2のフィルタは約600Hzと約1600Hzとの間のパスバンドを有する請求項12の装置。
- 相関係数に移動平均を用いてフィルタリングを施すことにより整合されないサンプル数を表す出力信号を発生させる第3のフィルタをさらに含む請求項12の装置。
- ハイブリッドラジオシステムにおけるアナログ音声信号とデジタル音声信号とのレベル整合を検知する装置であって、
アナログ音声信号にフィルタリングを施してフィルタリング済みアナログ音声信号を発生させる第1のフィルタと、
デジタル音声信号にフィルタリングを施してフィルタリング済みデジタル音声信号を発生させる第2のフィルタと、
音声セグメントについてアナログ音声信号の信号出力とデジタル音声信号の信号出力とを計算し、アナログ音声信号の信号出力とデジタル音声信号の信号出力の比率を用いてアナログ音声信号とデジタル音声信号とのレベル整合を表す信号を発生させるプロセッサとより成るレベル整合検知装置。 - レベル整合を表す信号に応答してアナログ音声信号及び/またはデジタル音声信号のレベルを調整するプロセッサをさらに含む請求項17の装置。
- 第1と第2のフィルタは約600Hzと約1600Hzとの間のパスバンドを有する請求項17の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/101,795 | 2005-04-08 | ||
US11/101,795 US8027419B2 (en) | 2005-04-08 | 2005-04-08 | Method for alignment of analog and digital audio in a hybrid radio waveform |
PCT/US2006/007236 WO2006110229A1 (en) | 2005-04-08 | 2006-03-01 | Method for alignment of analog and digital audio in a hybrid radio waveform |
Publications (2)
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JP2008538063A true JP2008538063A (ja) | 2008-10-02 |
JP4918082B2 JP4918082B2 (ja) | 2012-04-18 |
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JP2008505305A Active JP4918082B2 (ja) | 2005-04-08 | 2006-03-01 | ハイブリッドラジオ波形のアナログ及びデジタル音声を整合する方法 |
Country Status (16)
Country | Link |
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US (1) | US8027419B2 (ja) |
EP (1) | EP1867078A1 (ja) |
JP (1) | JP4918082B2 (ja) |
KR (1) | KR20080007454A (ja) |
CN (1) | CN101167278A (ja) |
AR (1) | AR053161A1 (ja) |
AU (1) | AU2006234862A1 (ja) |
BR (1) | BRPI0609086A2 (ja) |
CA (1) | CA2603190A1 (ja) |
CL (1) | CL2009001399A1 (ja) |
MX (1) | MX2007012305A (ja) |
MY (1) | MY147675A (ja) |
NZ (1) | NZ562999A (ja) |
RU (1) | RU2007141302A (ja) |
TW (1) | TWI387242B (ja) |
WO (1) | WO2006110229A1 (ja) |
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JP2019502310A (ja) * | 2015-12-11 | 2019-01-24 | アイビクィティ デジタル コーポレイション | 混成無線システムでの自動音声整合化の方法及びそのための装置 |
JP2019507514A (ja) * | 2015-12-18 | 2019-03-14 | アイビクィティ デジタル コーポレイション | 帯域内オンチャネル無線システム内で音声信号を混合する際のレベル制御の方法及びそのための装置 |
JP2019514300A (ja) * | 2016-04-14 | 2019-05-30 | アイビクィティ デジタル コーポレイション | ハイブリッドhdラジオ(商標)技術のための時間整合測定 |
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US9407383B2 (en) | 2014-12-23 | 2016-08-02 | Ibiquity Digital Corporation | Apparatus and method for distributing content from an HD radio system |
CN104902116B (zh) * | 2015-03-27 | 2018-05-25 | 腾讯科技(深圳)有限公司 | 一种音频数据与参考信号的时间对齐方法及装置 |
US9819480B2 (en) | 2015-08-04 | 2017-11-14 | Ibiquity Digital Corporation | System and method for synchronous processing of analog and digital pathways in a digital radio receiver |
CN105703861A (zh) * | 2015-12-31 | 2016-06-22 | 南阳理工学院 | 基于drm+系统的数字频谱平均接入发送方法 |
CN105656580B (zh) * | 2015-12-31 | 2018-10-30 | 南阳理工学院 | 基于drm+的数字功率动态接入方法 |
US10666416B2 (en) * | 2016-04-14 | 2020-05-26 | Ibiquity Digital Corporation | Time-alignment measurement for hybrid HD radio technology |
US10484115B2 (en) | 2018-02-09 | 2019-11-19 | Ibiquity Digital Corporation | Analog and digital audio alignment in the HD radio exciter engine (exgine) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019502310A (ja) * | 2015-12-11 | 2019-01-24 | アイビクィティ デジタル コーポレイション | 混成無線システムでの自動音声整合化の方法及びそのための装置 |
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JP2019514300A (ja) * | 2016-04-14 | 2019-05-30 | アイビクィティ デジタル コーポレイション | ハイブリッドhdラジオ(商標)技術のための時間整合測定 |
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Publication number | Publication date |
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AR053161A1 (es) | 2007-04-25 |
WO2006110229A1 (en) | 2006-10-19 |
MX2007012305A (es) | 2007-11-21 |
NZ562999A (en) | 2010-02-26 |
TWI387242B (zh) | 2013-02-21 |
US8027419B2 (en) | 2011-09-27 |
TW200707950A (en) | 2007-02-16 |
US20060227814A1 (en) | 2006-10-12 |
RU2007141302A (ru) | 2009-05-20 |
CL2009001399A1 (es) | 2009-10-02 |
AU2006234862A1 (en) | 2006-10-19 |
MY147675A (en) | 2012-12-31 |
EP1867078A1 (en) | 2007-12-19 |
JP4918082B2 (ja) | 2012-04-18 |
BRPI0609086A2 (pt) | 2016-11-29 |
KR20080007454A (ko) | 2008-01-21 |
CA2603190A1 (en) | 2006-10-19 |
CN101167278A (zh) | 2008-04-23 |
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