BRPI0503838A - conversor de taxa de amostragem, método de conversão de taxa de amostragem, e, aparelho de áudio incluindo um conversor de taxa de amostragem - Google Patents

conversor de taxa de amostragem, método de conversão de taxa de amostragem, e, aparelho de áudio incluindo um conversor de taxa de amostragem

Info

Publication number
BRPI0503838A
BRPI0503838A BRPI0503838-3A BRPI0503838A BRPI0503838A BR PI0503838 A BRPI0503838 A BR PI0503838A BR PI0503838 A BRPI0503838 A BR PI0503838A BR PI0503838 A BRPI0503838 A BR PI0503838A
Authority
BR
Brazil
Prior art keywords
sample rate
rate converter
frequency
rate conversion
device including
Prior art date
Application number
BRPI0503838-3A
Other languages
English (en)
Inventor
Yukihiro Mogi
Homare Nishizaki
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of BRPI0503838A publication Critical patent/BRPI0503838A/pt

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech 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
    • G10L19/02—Speech 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0273—Polyphase filters
    • H03H17/0275—Polyphase filters comprising non-recursive filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/028—Polynomial filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0294—Variable filters; Programmable filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0642—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being arbitrary or irrational
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/06—Non-recursive filters
    • H03H17/0621—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0635—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/065—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/0657—Non-recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is higher than the input sampling frequency, i.e. interpolation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H2017/0072—Theoretical filter design

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

"CONVERSOR DE TAXA DE AMOSTRAGEM, MéTODO DE CONVERSãO DE TAXA DE AMOSTRAGEM, E, APARELHO DE áUDIO INCLUINDO UM CONVERSOR DE TAXA DE AMOSTRAGEM". é provido um dispositivo de conversão de taxa de amostragem capaz de obter uma característica de amplitude passando por uma freqüência arbitrária e realizando uma conversão altamente precisa não dependendo da freqüência de corte. O dispositivo de conversão de taxa de amostragem inclui: um amostrador para cima (103) para inserir (U- 1) pontos zero entre sinais e aumentar a freqüência de amostragem Fsi por U; uma unidade de cálculo de convolução (104) tendo um filtro de FIR para interpolar um valor através de convolução para o sinal de saída do amostrador para cima; e um bloco de interpolação linear (105) para selecionar amostras em dois pontos do sinal de saída da unidade de cálculo de convolução (104) da freqüência de amostragem UFsi e calcular o valor da posição necessária da interpolação linear. O filtro de FIR tem um coeficiente de filtro que é uma resposta de impulso. Uma função de transmissão H(z) é correlacionada a uma função de transmissão Z(z) do pré-filtro. O coeficiente de filtro é correlacionado à resposta de freqüência do pré-filtro e fixado executando aproximação ponderada para uma característica desejada.
BRPI0503838-3A 2004-01-30 2005-01-18 conversor de taxa de amostragem, método de conversão de taxa de amostragem, e, aparelho de áudio incluindo um conversor de taxa de amostragem BRPI0503838A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004022777A JP2005217837A (ja) 2004-01-30 2004-01-30 サンプリングレート変換装置およびその方法、並びに、オーディオ装置
PCT/JP2005/000515 WO2005074131A1 (ja) 2004-01-30 2005-01-18 サンプリングレート変換装置およびその方法、並びに、オーディオ装置

Publications (1)

Publication Number Publication Date
BRPI0503838A true BRPI0503838A (pt) 2006-10-24

Family

ID=34823847

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0503838-3A BRPI0503838A (pt) 2004-01-30 2005-01-18 conversor de taxa de amostragem, método de conversão de taxa de amostragem, e, aparelho de áudio incluindo um conversor de taxa de amostragem

Country Status (9)

Country Link
US (1) US7439884B2 (pt)
EP (1) EP1622264A1 (pt)
JP (1) JP2005217837A (pt)
KR (1) KR20060128612A (pt)
CN (1) CN1765051A (pt)
BR (1) BRPI0503838A (pt)
RU (1) RU2005130478A (pt)
TW (1) TWI268658B (pt)
WO (1) WO2005074131A1 (pt)

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US7904695B2 (en) * 2006-02-16 2011-03-08 Vns Portfolio Llc Asynchronous power saving computer
US7966481B2 (en) 2006-02-16 2011-06-21 Vns Portfolio Llc Computer system and method for executing port communications without interrupting the receiving computer
US7904615B2 (en) 2006-02-16 2011-03-08 Vns Portfolio Llc Asynchronous computer communication
KR100745133B1 (ko) * 2006-07-26 2007-08-01 엠텍비젼 주식회사 계산량을 줄일 수 있는 샘플링 레이트 컨버젼 방법 및샘플링 레이트 컨버젼 시스템
JP5352952B2 (ja) * 2006-11-07 2013-11-27 ソニー株式会社 デジタルフィルタ回路、デジタルフィルタプログラムおよびノイズキャンセリングシステム
JP4296518B2 (ja) * 2006-12-07 2009-07-15 ソニー株式会社 情報処理装置および情報処理方法
EP1978449A2 (en) * 2007-04-06 2008-10-08 Technology Properties Limited Signal processing
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JP4772754B2 (ja) * 2007-06-25 2011-09-14 三菱電機株式会社 画像補間装置及び方法、並びに画像読取装置
CN101378251B (zh) * 2007-08-28 2012-05-30 深圳迈瑞生物医疗电子股份有限公司 一种提高低采样率情况下信号显示质量的方法
JP5008596B2 (ja) * 2008-03-19 2012-08-22 アルパイン株式会社 サンプリングレート変換装置およびその変換方法
JP2010074252A (ja) * 2008-09-16 2010-04-02 Hitachi Kokusai Electric Inc Ｏｆｄｍ送信機
KR101450044B1 (ko) * 2008-12-16 2014-10-13 시그널 프로세싱 디바이시스 스웨덴 에이비 비선형 오차의 추정 및 보상을 위한 방법 및 장치
US8619840B2 (en) * 2010-02-26 2013-12-31 Qualcomm Incorporated Apparatus and methods for sampling rate conversion for wireless transceivers
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CN103313315B (zh) * 2012-03-14 2016-08-03 华为技术有限公司 速率转换装置及其方法、基站设备
US8947993B2 (en) * 2012-07-24 2015-02-03 Telefonaktiebolaget L M Ericsson (Publ) Methods of transmitting using filtering in the time domain and related devices
US9949029B2 (en) * 2013-03-26 2018-04-17 Lachlan Paul BARRATT Audio filtering with virtual sample rate increases
FR3004883B1 (fr) * 2013-04-17 2015-04-03 Jean-Luc Haurais Procede de restitution sonore d'un signal numerique audio
US10015616B2 (en) * 2014-06-06 2018-07-03 University Of Maryland, College Park Sparse decomposition of head related impulse responses with applications to spatial audio rendering
TWI566241B (zh) * 2015-01-23 2017-01-11 宏碁股份有限公司 語音信號處理裝置及語音信號處理方法
JP6425581B2 (ja) * 2015-02-26 2018-11-21 セイコーＮｐｃ株式会社 ディジタル温度補償発振器
US9531343B2 (en) * 2015-03-20 2016-12-27 Texas Instruments Incorporated Systems and methods of variable fractional rate digital resampling
CN104849561A (zh) * 2015-04-14 2015-08-19 西安电子科技大学 低采样率下和欠采样率下高精度计算驻波比的方法
CN105306008A (zh) * 2015-11-13 2016-02-03 北京遥测技术研究所 一种任意采样率转换的内插滤波处理方法
CN107809252B (zh) * 2017-10-28 2021-11-05 深圳市睿臻信息技术服务有限公司 一种新型24位adpcm音频压缩/解压缩方法
CN112152589B (zh) * 2019-06-28 2023-10-13 宏碁股份有限公司 信号处理装置及信号处理方法
CN111008924B (zh) * 2019-12-02 2023-09-12 西安交通大学深圳研究院 一种图像处理方法、装置、电子设备及存储介质
CN112003592B (zh) * 2020-08-14 2023-09-12 中北大学 一种实现高分辨率量子传感的脉冲整形算法

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Also Published As

Publication number Publication date
RU2005130478A (ru) 2006-07-10
JP2005217837A (ja) 2005-08-11
KR20060128612A (ko) 2006-12-14
US7439884B2 (en) 2008-10-21
WO2005074131A1 (ja) 2005-08-11
US20070041438A1 (en) 2007-02-22
TWI268658B (en) 2006-12-11
CN1765051A (zh) 2006-04-26
TW200607228A (en) 2006-02-16
EP1622264A1 (en) 2006-02-01

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Legal Events

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B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]