BR112015017633A2 - conceito de preenchimento de ruído. - Google Patents

conceito de preenchimento de ruído.

Info

Publication number
BR112015017633A2
BR112015017633A2 BR112015017633A BR112015017633A BR112015017633A2 BR 112015017633 A2 BR112015017633 A2 BR 112015017633A2 BR 112015017633 A BR112015017633 A BR 112015017633A BR 112015017633 A BR112015017633 A BR 112015017633A BR 112015017633 A2 BR112015017633 A2 BR 112015017633A2
Authority
BR
Brazil
Prior art keywords
noise fill
concept
fill concept
noise
fill
Prior art date
Application number
BR112015017633A
Other languages
English (en)
Other versions
BR112015017633B1 (pt
Inventor
Sascha Disch
Marc Gayer
Christian Helmrich
Valero Maria Luis
Goran Markovic
Original Assignee
Fraunhofer Gellschaft Zur Foerderung Der Angewandten Forschung E V
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 by Fraunhofer Gellschaft Zur Foerderung Der Angewandten Forschung E V filed Critical Fraunhofer Gellschaft Zur Foerderung Der Angewandten Forschung E V
Publication of BR112015017633A2 publication Critical patent/BR112015017633A2/pt
Publication of BR112015017633B1 publication Critical patent/BR112015017633B1/pt

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/028Noise substitution, i.e. substituting non-tonal spectral components by noisy source
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/012Comfort noise or silence coding
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16Vocoder architecture
    • G10L19/18Vocoders using multiple modes
    • G10L19/24Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Noise Elimination (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Stereophonic System (AREA)
BR112015017633-0A 2013-01-29 2014-01-28 Conceito de preenchimento de ruído BR112015017633B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361758209P 2013-01-29 2013-01-29
US61/758,209 2013-01-29
PCT/EP2014/051630 WO2014118175A1 (en) 2013-01-29 2014-01-28 Noise filling concept

Publications (2)

Publication Number Publication Date
BR112015017633A2 true BR112015017633A2 (pt) 2018-05-02
BR112015017633B1 BR112015017633B1 (pt) 2021-02-23

Family

ID=50029035

Family Applications (2)

Application Number Title Priority Date Filing Date
BR112015017633-0A BR112015017633B1 (pt) 2013-01-29 2014-01-28 Conceito de preenchimento de ruído
BR112015017748-4A BR112015017748B1 (pt) 2013-01-29 2014-01-28 Preenchimento de ruído na codificação de áudio de transformada perceptual

Family Applications After (1)

Application Number Title Priority Date Filing Date
BR112015017748-4A BR112015017748B1 (pt) 2013-01-29 2014-01-28 Preenchimento de ruído na codificação de áudio de transformada perceptual

Country Status (21)

Country Link
US (4) US9524724B2 (pt)
EP (6) EP3693962B1 (pt)
JP (2) JP6289508B2 (pt)
KR (6) KR101926651B1 (pt)
CN (5) CN110189760B (pt)
AR (2) AR094678A1 (pt)
AU (2) AU2014211544B2 (pt)
BR (2) BR112015017633B1 (pt)
CA (2) CA2898024C (pt)
ES (4) ES2714289T3 (pt)
HK (2) HK1218345A1 (pt)
MX (2) MX345160B (pt)
MY (2) MY185164A (pt)
PL (4) PL3471093T3 (pt)
PT (4) PT2951817T (pt)
RU (2) RU2660605C2 (pt)
SG (2) SG11201505893TA (pt)
TR (2) TR201902849T4 (pt)
TW (2) TWI536367B (pt)
WO (2) WO2014118176A1 (pt)
ZA (2) ZA201506266B (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2714289T3 (es) 2013-01-29 2019-05-28 Fraunhofer Ges Forschung Llenado con ruido en la codificación de audio por transformada perceptual
WO2014118156A1 (en) * 2013-01-29 2014-08-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for synthesizing an audio signal, decoder, encoder, system and computer program
PL3069338T3 (pl) 2013-11-13 2019-06-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Koder do kodowania sygnału audio, system przesyłania audio i sposób określania wartości korekcji
EP2980794A1 (en) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder and decoder using a frequency domain processor and a time domain processor
EP2980795A1 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoding and decoding using a frequency domain processor, a time domain processor and a cross processor for initialization of the time domain processor
EP2980792A1 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating an enhanced signal using independent noise-filling
DE102016104665A1 (de) * 2016-03-14 2017-09-14 Ask Industries Gmbh Verfahren und Vorrichtung zur Aufbereitung eines verlustbehaftet komprimierten Audiosignals
US10146500B2 (en) 2016-08-31 2018-12-04 Dts, Inc. Transform-based audio codec and method with subband energy smoothing
TWI807562B (zh) 2017-03-23 2023-07-01 瑞典商都比國際公司 用於音訊信號之高頻重建的諧波轉置器的回溯相容整合
EP3483880A1 (en) * 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Temporal noise shaping
EP3483879A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Analysis/synthesis windowing function for modulated lapped transformation
WO2019166317A1 (en) * 2018-02-27 2019-09-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. A spectrally adaptive noise filling tool (sanft) for perceptual transform coding of still and moving images
US10950251B2 (en) * 2018-03-05 2021-03-16 Dts, Inc. Coding of harmonic signals in transform-based audio codecs
CN112735449B (zh) * 2020-12-30 2023-04-14 北京百瑞互联技术有限公司 优化频域噪声整形的音频编码方法及装置
CN113883672B (zh) * 2021-09-13 2022-11-15 Tcl空调器(中山)有限公司 噪音类型识别方法、空调器及计算机可读存储介质
WO2023118598A1 (en) * 2021-12-23 2023-06-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for spectrotemporally improved spectral gap filling in audio coding using a tilt
WO2023117144A1 (en) * 2021-12-23 2023-06-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for spectrotemporally improved spectral gap filling in audio coding using a tilt

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040217A (en) * 1989-10-18 1991-08-13 At&T Bell Laboratories Perceptual coding of audio signals
US5692102A (en) * 1995-10-26 1997-11-25 Motorola, Inc. Method device and system for an efficient noise injection process for low bitrate audio compression
US6167133A (en) 1997-04-02 2000-12-26 At&T Corporation Echo detection, tracking, cancellation and noise fill in real time in a communication system
SE9903553D0 (sv) * 1999-01-27 1999-10-01 Lars Liljeryd Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL)
CN1244904C (zh) * 2001-05-08 2006-03-08 皇家菲利浦电子有限公司 声频信号编码方法和设备
US7447631B2 (en) * 2002-06-17 2008-11-04 Dolby Laboratories Licensing Corporation Audio coding system using spectral hole filling
CA2454296A1 (en) * 2003-12-29 2005-06-29 Nokia Corporation Method and device for speech enhancement in the presence of background noise
CA2457988A1 (en) * 2004-02-18 2005-08-18 Voiceage Corporation Methods and devices for audio compression based on acelp/tcx coding and multi-rate lattice vector quantization
WO2006079348A1 (en) * 2005-01-31 2006-08-03 Sonorit Aps Method for generating concealment frames in communication system
KR100707186B1 (ko) * 2005-03-24 2007-04-13 삼성전자주식회사 오디오 부호화 및 복호화 장치와 그 방법 및 기록 매체
US8332216B2 (en) 2006-01-12 2012-12-11 Stmicroelectronics Asia Pacific Pte., Ltd. System and method for low power stereo perceptual audio coding using adaptive masking threshold
US7953595B2 (en) 2006-10-18 2011-05-31 Polycom, Inc. Dual-transform coding of audio signals
KR101291672B1 (ko) * 2007-03-07 2013-08-01 삼성전자주식회사 노이즈 신호 부호화 및 복호화 장치 및 방법
CN101303855B (zh) * 2007-05-11 2011-06-22 华为技术有限公司 一种舒适噪声参数产生方法和装置
US9653088B2 (en) 2007-06-13 2017-05-16 Qualcomm Incorporated Systems, methods, and apparatus for signal encoding using pitch-regularizing and non-pitch-regularizing coding
DK2571024T3 (en) * 2007-08-27 2015-01-05 Ericsson Telefon Ab L M Adaptive transition frequency between the noise filling and bandwidth extension
ES2704286T3 (es) * 2007-08-27 2019-03-15 Ericsson Telefon Ab L M Método y dispositivo para la descodificación espectral perceptual de una señal de audio, que incluyen el llenado de huecos espectrales
US8527265B2 (en) * 2007-10-22 2013-09-03 Qualcomm Incorporated Low-complexity encoding/decoding of quantized MDCT spectrum in scalable speech and audio codecs
BRPI0818927A2 (pt) * 2007-11-02 2015-06-16 Huawei Tech Co Ltd Método e aparelho para a decodificação de áudio
EP2077550B8 (en) * 2008-01-04 2012-03-14 Dolby International AB Audio encoder and decoder
CN101335000B (zh) * 2008-03-26 2010-04-21 华为技术有限公司 编码的方法及装置
CA2836871C (en) * 2008-07-11 2017-07-18 Stefan Bayer Time warp activation signal provider, audio signal encoder, method for providing a time warp activation signal, method for encoding an audio signal and computer programs
EP4407610A1 (en) * 2008-07-11 2024-07-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder, audio decoder, methods for encoding and decoding an audio signal, audio stream and computer program
MY181231A (en) 2008-07-11 2020-12-21 Fraunhofer Ges Zur Forderung Der Angenwandten Forschung E V Audio encoder and decoder for encoding and decoding audio samples
CN102177426B (zh) 2008-10-08 2014-11-05 弗兰霍菲尔运输应用研究公司 多分辨率切换音频编码/解码方案
CA2777073C (en) 2009-10-08 2015-11-24 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Multi-mode audio signal decoder, multi-mode audio signal encoder, methods and computer program using a linear-prediction-coding based noise shaping
ES2797525T3 (es) * 2009-10-15 2020-12-02 Voiceage Corp Conformación simultánea de ruido en el dominio del tiempo y el dominio de la frecuencia para transformaciones TDAC
WO2011048117A1 (en) * 2009-10-20 2011-04-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio signal encoder, audio signal decoder, method for encoding or decoding an audio signal using an aliasing-cancellation
CN102063905A (zh) * 2009-11-13 2011-05-18 数维科技(北京)有限公司 一种用于音频解码的盲噪声填充方法及其装置
CN102194457B (zh) * 2010-03-02 2013-02-27 中兴通讯股份有限公司 音频编解码方法、系统及噪声水平估计方法
US9236063B2 (en) * 2010-07-30 2016-01-12 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for dynamic bit allocation
US9208792B2 (en) * 2010-08-17 2015-12-08 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for noise injection
WO2012046685A1 (ja) * 2010-10-05 2012-04-12 日本電信電話株式会社 符号化方法、復号方法、符号化装置、復号装置、プログラム、記録媒体
EP3373296A1 (en) * 2011-02-14 2018-09-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Noise generation in audio codecs
ES2664090T3 (es) * 2011-03-10 2018-04-18 Telefonaktiebolaget Lm Ericsson (Publ) Relleno de subvectores no codificados en señales de audio codificadas por transformada
TWI606441B (zh) * 2011-05-13 2017-11-21 三星電子股份有限公司 解碼裝置
MX340386B (es) * 2011-06-30 2016-07-07 Samsung Electronics Co Ltd Aparato y metodo para generar señal extendida de ancho de banda.
JP2013015598A (ja) * 2011-06-30 2013-01-24 Zte Corp オーディオ符号化/復号化方法、システム及びノイズレベルの推定方法
CN102208188B (zh) * 2011-07-13 2013-04-17 华为技术有限公司 音频信号编解码方法和设备
ES2714289T3 (es) 2013-01-29 2019-05-28 Fraunhofer Ges Forschung Llenado con ruido en la codificación de audio por transformada perceptual

Also Published As

Publication number Publication date
US11031022B2 (en) 2021-06-08
EP2951818B1 (en) 2018-11-21
TR201902849T4 (tr) 2019-03-21
EP3471093A1 (en) 2019-04-17
MX2015009601A (es) 2015-11-25
PT2951817T (pt) 2019-02-25
CN110223704B (zh) 2023-09-15
AR094678A1 (es) 2015-08-19
EP3471093B1 (en) 2020-08-26
KR20160091448A (ko) 2016-08-02
EP3451334B1 (en) 2020-04-01
JP2016505171A (ja) 2016-02-18
AR094679A1 (es) 2015-08-19
TW201434034A (zh) 2014-09-01
KR20170117605A (ko) 2017-10-23
EP3761312C0 (en) 2024-07-17
KR101757347B1 (ko) 2017-07-26
MX345160B (es) 2017-01-18
ES2709360T3 (es) 2019-04-16
RU2660605C2 (ru) 2018-07-06
KR20160090403A (ko) 2016-07-29
MX2015009600A (es) 2015-11-25
KR101926651B1 (ko) 2019-03-07
KR20160091449A (ko) 2016-08-02
TWI529700B (zh) 2016-04-11
CN110223704A (zh) 2019-09-10
CN105190749B (zh) 2019-06-11
TR201902394T4 (tr) 2019-03-21
CN110197667A (zh) 2019-09-03
PT2951818T (pt) 2019-02-25
CN105264597B (zh) 2019-12-10
CN110197667B (zh) 2023-06-30
EP2951817A1 (en) 2015-12-09
EP3761312B1 (en) 2024-07-17
CA2898024C (en) 2018-09-11
AU2014211543B2 (en) 2017-03-30
CN110189760B (zh) 2023-09-12
CA2898029A1 (en) 2014-08-07
CA2898029C (en) 2018-08-21
WO2014118175A1 (en) 2014-08-07
AU2014211544A1 (en) 2015-08-20
US20170372712A1 (en) 2017-12-28
PL2951818T3 (pl) 2019-05-31
EP3693962A1 (en) 2020-08-12
KR101778217B1 (ko) 2017-09-13
RU2015136502A (ru) 2017-03-07
SG11201505915YA (en) 2015-09-29
US20150332686A1 (en) 2015-11-19
EP3693962C0 (en) 2024-07-10
ZA201506266B (en) 2017-11-29
PT3471093T (pt) 2020-11-20
MX343572B (es) 2016-11-09
JP6158352B2 (ja) 2017-07-05
PL2951817T3 (pl) 2019-05-31
PL3451334T3 (pl) 2020-12-14
ES2834929T3 (es) 2021-06-21
TW201434035A (zh) 2014-09-01
US9792920B2 (en) 2017-10-17
ES2714289T3 (es) 2019-05-28
WO2014118176A1 (en) 2014-08-07
EP3693962B1 (en) 2024-07-10
US10410642B2 (en) 2019-09-10
PT3451334T (pt) 2020-06-29
RU2631988C2 (ru) 2017-09-29
AU2014211544B2 (en) 2017-03-30
CA2898024A1 (en) 2014-08-07
US9524724B2 (en) 2016-12-20
EP2951818A1 (en) 2015-12-09
KR20150108422A (ko) 2015-09-25
KR101778220B1 (ko) 2017-09-13
BR112015017748B1 (pt) 2022-03-15
EP3761312A1 (en) 2021-01-06
JP6289508B2 (ja) 2018-03-07
HK1218345A1 (zh) 2017-02-10
SG11201505893TA (en) 2015-08-28
RU2015136505A (ru) 2017-03-07
CN105190749A (zh) 2015-12-23
CN110189760A (zh) 2019-08-30
EP3451334A1 (en) 2019-03-06
KR101897092B1 (ko) 2018-09-11
PL3471093T3 (pl) 2021-04-06
US20150332689A1 (en) 2015-11-19
MY185164A (en) 2021-04-30
JP2016511431A (ja) 2016-04-14
ZA201506269B (en) 2017-07-26
HK1218344A1 (zh) 2017-02-10
MY172238A (en) 2019-11-18
KR101877906B1 (ko) 2018-07-12
EP2951817B1 (en) 2018-12-05
US20190348053A1 (en) 2019-11-14
BR112015017633B1 (pt) 2021-02-23
BR112015017748A2 (pt) 2017-08-22
CN105264597A (zh) 2016-01-20
AU2014211543A1 (en) 2015-08-20
TWI536367B (zh) 2016-06-01
ES2796485T3 (es) 2020-11-27
KR20150109437A (ko) 2015-10-01

Similar Documents

Publication Publication Date Title
BR112015017633A2 (pt) conceito de preenchimento de ruído.
FR3006466B3 (fr) .
BR112016010220A2 (pt) compostos inibidores de autoxatina.
BR302014001376S1 (pt) Configuração aplicada em bolsa.
FR3004506B1 (fr) Connexion fluidique securisee.
DK3862031T3 (da) Smurte, oleofile katetre
DK2975030T3 (da) Dihydropyridazin-3,5-dion-derivat
FR3007989B1 (fr) Autoinjecteur.
FR3013601B1 (fr) Autoinjecteur.
FR3007636B1 (fr) Trocart perforant.
GB201411896D0 (en) .
FR3001302B1 (fr) .
BR112016006859A2 (pt) variantes de acetil-coa carboxilase melhoradas.
FR3001303B1 (fr) .
ES1086107Y (es) Contenedor armable.
ES1096031Y (es) Unidad de engatillado
TH148359B (th) ไพรโรลิดีน-2-คาร์บอกซาไมด์ที่ถูกแทนที่
GB201409791D0 (en) .
BR302013006603S1 (pt) Configuração aplicada em escova.
UY4313S (es) ?motocicleta?.
ITMI20130083U1 (it) Fresa da odoiontoiatria perfezionata.
ITMO20130015U1 (it) Lettino.
ITAN20130115A1 (it) Faretra odontoiatrica perfezionata.
GB201322661D0 (en) .
BR302013000308S1 (pt) Para-choque.

Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 28/01/2014, OBSERVADAS AS CONDICOES LEGAIS.