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公开(公告)号：EP2451076A1
公开(公告)日：2012-05-09
申请号：EP10793767.4
申请日：2010-05-17
CPC分类号： G10L21/038 , G10H1/0091 , G10H2210/066 , G10H2210/321 , G10H2240/061 , G10L25/90
摘要： An audio signal processing device 100 includes a period detecting unit 102 for detecting the fundamental period of an input audio signal 101; a square wave generating unit 106 for generating, according to the fundamental period the period detecting unit 102 detects, a square wave 107 whose period is an integer multiple of the fundamental period; an amplitude correction coefficient generating unit 103 for calculating an amplitude correction coefficient 109 approximately equal and proportional to the intensity of the input audio signal 101; a first multiplier 108 for generating an amplitude-corrected square wave 110 by multiplying the square wave 107 by the amplitude correction coefficient 109; and an adder 104 for adding the amplitude-corrected square wave 110 to the input audio signal 101.
摘要翻译： 音频信号处理装置100包括用于检测输入音频信号101的基本周期的周期检测单元102; 方波生成单元106，根据周期检测单元102检测的基本周期，生成周期为基本周期的整数倍的方波107; 幅度校正系数生成单元103，用于计算与输入音频信号101的强度近似等于并成比例的幅度校正系数109; 用于通过将方波107乘以振幅校正系数109来产生振幅校正的方波110的第一乘法器108; 以及用于将幅度校正的方波110与输入音频信号101相加的加法器104。
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公开(公告)号：EP2237570A3
公开(公告)日：2012-09-05
申请号：EP10001932.2
申请日：2010-02-24
申请人： Yamaha Corporation
发明人： Aoki, Ryotaro
CPC分类号： H04S3/008 , G10H1/383 , G10H2210/321 , H04S7/307 , H04S2400/07
摘要： An audio signal processing apparatus includes: a first filtering unit which outputs an audio signal while attenuating frequency components except for preset frequency components; a detecting unit which detects a sound volume level; an amplitude limiting unit which calculates an amplitude limiting level corresponding to the sound volume level, and which limits a part of a waveform of the audio signal output from the first filtering unit; a second filtering unit which outputs the audio signal output from the amplitude limiting unit while attenuating frequency components except for preset frequency components including a part of the frequency band of the audio signal output from the first filtering unit, and a part of the frequency band of the harmonics; a compressing unit which compresses a dynamic range of the audio signal; and an adding unit which adds the audio signal output from the compressing unit to the input audio signal.
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公开(公告)号：EP3163905A1
公开(公告)日：2017-05-03
申请号：EP16179849
申请日：2016-07-18
发明人： YOU YULI
IPC分类号： H04R3/04 , G10L21/013
CPC分类号： H04R3/04 , G10H1/08 , G10H1/12 , G10H2210/321 , G10H2250/215 , G10L21/013 , G10L25/93 , H04R2430/01 , H04R2499/11
摘要： Provided are, among other things, systems, methods and techniques for processing an audio signal to add virtual bass. In one representative embodiment, an apparatus includes: (a) an input line that inputs an original audio signal in the time domain; (b) a bass extraction filter that extracts a bass portion of the original audio signal, which also is in the time domain; (c) an estimator that estimates a fundamental frequency of a bass sound within the bass portion; (d) a frequency translator that shifts the bass portion by a positive frequency increment that is an integer multiple of the fundamental frequency estimated by the estimator, thereby providing a virtual bass signal; (e) an adder having (i) inputs coupled to the original audio signal and to the virtual bass signal and (ii) an output; and (f) an audio output device coupled to the output of the adder.
摘要翻译： 除其他之外，提供了用于处理音频信号以添加虚拟低音的系统，方法和技术。 在一个代表性实施例中，一种装置包括：（a）在时域中输入原始音频信号的输入线; （b）低音提取滤波器，其提取也在时域中的原始音频信号的低音部分; （c）估计低音部分内的低音声音的基频的估计器; （d）频率变换器，其将低音部分移动正频率增量，所述正频率增量是由估计器估计的基频的整数倍，由此提供虚拟低音信号; （e）加法器，其具有（i）耦合到原始音频信号和虚拟低音信号的输入和（ii）输出; 和（f）耦合到加法器输出端的音频输出装置。
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公开(公告)号：EP2451076B1
公开(公告)日：2018-10-03
申请号：EP10793767.4
申请日：2010-05-17
IPC分类号： G10L21/038 , G10H1/00
CPC分类号： G10L21/038 , G10H1/0091 , G10H2210/066 , G10H2210/321 , G10H2240/061 , G10L25/90
摘要： An audio signal processing device 100 includes a period detecting unit 102 for detecting the fundamental period of an input audio signal 101; a square wave generating unit 106 for generating, according to the fundamental period the period detecting unit 102 detects, a square wave 107 whose period is an integer multiple of the fundamental period; an amplitude correction coefficient generating unit 103 for calculating an amplitude correction coefficient 109 approximately equal and proportional to the intensity of the input audio signal 101; a first multiplier 108 for generating an amplitude-corrected square wave 110 by multiplying the square wave 107 by the amplitude correction coefficient 109; and an adder 104 for adding the amplitude-corrected square wave 110 to the input audio signal 101.
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公开(公告)号：EP2783521A1
公开(公告)日：2014-10-01
申请号：EP12801491.7
申请日：2012-11-22
申请人： Actiwave AB
IPC分类号： H04R3/04
CPC分类号： H04R3/04 , G10H2210/321 , H03G5/165 , H03G9/025 , H03G11/008 , H04R3/12 , H04R2499/11
摘要： A system and method for enhancing the real and/or perceived bass band of an audio signal is disclosed. A computationally simple yet effective bass band enhancement system for use in consumer electronics applications is disclosed. An audio processing system including bass enhancement functionality for use in a mobile audio system is disclosed.
摘要翻译： 公开了一种用于增强音频信号的真实和/或感知低音带的系统和方法。 公开了用于消费电子应用的计算简单而有效的低音频带增强系统。 公开了一种包括用于移动音频系统中的低音增强功能的音频处理系统。
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公开(公告)号：EP3163906A1
公开(公告)日：2017-05-03
申请号：EP16179860.8
申请日：2016-07-18
发明人： YOU, Yuli
CPC分类号： H04R3/04 , G10H2210/321 , H03G5/165 , H04R2430/01
摘要： Provided are systems, methods and techniques for processing an audio signal to add virtual bass. In one representative embodiment, an apparatus includes: (a) an input line that inputs an original audio signal; (b) a transform module that transforms the original audio signal into a set of frequency components; (c) a bass extraction filter that extracts a bass portion of such frequency components; (d) an estimator that estimates a fundamental frequency of a bass sound within such bass portion; (e) a frequency translator that shifts the bass portion by a frequency that is an integer multiple of the fundamental frequency estimated by the estimator, thereby providing a virtual bass signal; (f) an adder having (i) inputs coupled to the original audio signal and to the virtual bass signal and (ii) an output; and (g) an audio output device coupled to the output of the adder.
摘要翻译： 提供用于处理音频信号以添加虚拟低音的系统，方法和技术。 在一个代表性实施例中，一种装置包括：（a）输入原始音频信号的输入线; （b）变换模块，其将原始音频信号变换成一组频率分量; （c）提取这些频率分量的低音部分的低音提取滤波器; （d）估计该低音部分内的低音声音的基频的估计器; （e）频率变换器，其将低音部分偏移由估计器估计的基频的整数倍的频率，从而提供虚拟低音信号; （f）加法器，其具有（i）耦合到原始音频信号和虚拟低音信号的输入和（ii）输出; 和（g）耦合到加法器的输出的音频输出设备。
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公开(公告)号：EP2783521B1
公开(公告)日：2016-10-05
申请号：EP12801491.7
申请日：2012-11-22
CPC分类号： H04R3/04 , G10H2210/321 , H03G5/165 , H03G9/025 , H03G11/008 , H04R3/12 , H04R2499/11
摘要： A system and method for enhancing the real and/or perceived bass band of an audio signal is disclosed. A computationally simple yet effective bass band enhancement system for use in consumer electronics applications is disclosed. An audio processing system including bass enhancement functionality for use in a mobile audio system is disclosed.
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公开(公告)号：EP2237570B1
公开(公告)日：2015-12-02
申请号：EP10001932.2
申请日：2010-02-24
申请人： Yamaha Corporation
发明人： Aoki, Ryotaro
CPC分类号： H04S3/008 , G10H1/383 , G10H2210/321 , H04S7/307 , H04S2400/07
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公开(公告)号：EP2451076A4
公开(公告)日：2013-07-03
申请号：EP10793767
申请日：2010-05-17
发明人： KIMURA MASARU , MATSUOKA BUNKEI , YAMAZAKI TAKASHI , OMOTE ASAKO
IPC分类号： H03G5/02 , G10L21/02 , G10L21/038 , G10L25/90
CPC分类号： G10L21/038 , G10H1/0091 , G10H2210/066 , G10H2210/321 , G10H2240/061 , G10L25/90
摘要： An audio signal processing device 100 includes a period detecting unit 102 for detecting the fundamental period of an input audio signal 101; a square wave generating unit 106 for generating, according to the fundamental period the period detecting unit 102 detects, a square wave 107 whose period is an integer multiple of the fundamental period; an amplitude correction coefficient generating unit 103 for calculating an amplitude correction coefficient 109 approximately equal and proportional to the intensity of the input audio signal 101; a first multiplier 108 for generating an amplitude-corrected square wave 110 by multiplying the square wave 107 by the amplitude correction coefficient 109; and an adder 104 for adding the amplitude-corrected square wave 110 to the input audio signal 101.
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10.发明公开Audio signal processing apparatus and speaker apparatus 有权Audiosignalverarbeitungsvorrichtung und Lautsprechervorrichtung
公开(公告)号：EP2237570A2
公开(公告)日：2010-10-06
申请号：EP10001932.2
申请日：2010-02-24
申请人： Yamaha Corporation
发明人： Aoki, Ryotaro
IPC分类号： H04R5/04
CPC分类号： H04S3/008 , G10H1/383 , G10H2210/321 , H04S7/307 , H04S2400/07
摘要： An audio signal processing apparatus includes: a first filtering unit which outputs an audio signal while attenuating frequency components except for preset frequency components; a detecting unit which detects a sound volume level; an amplitude limiting unit which calculates an amplitude limiting level corresponding to the sound volume level, and which limits a part of a waveform of the audio signal output from the first filtering unit; a second filtering unit which outputs the audio signal output from the amplitude limiting unit while attenuating frequency components except for preset frequency components including a part of the frequency band of the audio signal output from the first filtering unit, and a part of the frequency band of the harmonics; a compressing unit which compresses a dynamic range of the audio signal; and an adding unit which adds the audio signal output from the compressing unit to the input audio signal.
摘要翻译： 音频信号处理装置包括：第一滤波单元，其在衰减除了预设频率分量之外的频率分量的同时输出音频信号; 检测单元，其检测音量水平; 幅度限制单元，其计算与音量水平相对应的限幅电平，并限制从第一滤波单元输出的音频信号的波形的一部分; 第二滤波单元，其输出从振幅限制单元输出的音频信号，同时衰减除了包括从第一滤波单元输出的音频信号的频带的一部分的预设频率分量之外的频率分量，以及频带的一部分 谐波; 压缩单元，其压缩音频信号的动态范围; 以及添加单元，其将从压缩单元输出的音频信号添加到输入音频信号。
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