发明名称 |
AUDIO FILTERING WITH VIRTUAL SAMPLE RATE INCREASES |
摘要 |
A method of digitally filtering an audio signal using an adjusted audio filter. The adjusted audio filter is represented by an impulse response including a waveform in its time domain represented by a sine function of absolute values. A composite audio filter is derived from two adjusted audio filters although any number of filters may be used. The composite audio filter generally includes a bank of the filters which together define a frequency bandwidth representative of the audio signal or spectrum to be filtered. Also a bandpass filter is constructed by combining frequency responses for sine components of absolute values integrated from 0 to bpf and sine components of absolute values integrated from 1/bpf to 0. The frequency response may be the sum of the frequency responses for each of the filters used to create the composite bandpass filter. |
申请公布号 |
EP2979360(A1) |
申请公布日期 |
2016.02.03 |
申请号 |
EP20140775520 |
申请日期 |
2014.03.26 |
申请人 |
BARRATT, LACHLAN PAUL |
发明人 |
BARRATT, LACHLAN PAUL |
分类号 |
H04R1/22;G01R23/167;G06F3/16;G06F17/17;G06T5/00;G10L21/0332;H03H17/00;H03H17/02;H03H17/06;H04R3/04 |
主分类号 |
H04R1/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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