dsp.js-master
所属分类：JavaScript/JQuery
开发工具：Java
文件大小：375KB
下载次数：16
上传日期：2013-06-13 16:51:22
上 传 者：
suning90
说明： dsp.js是一个综合性的数字信号处理的JavaScript库。
它包括许多信号分析和生成功能，包括
（正弦振荡器，看到，广场，三角形），窗函数（翰，海明，等），
信封（ADSR），IIR滤波器（低通，高通，带通，切口），FFT，DFT
变换，延时，混响。
(dsp.js is an integrated digital signal processing JavaScript libraries. It includes many signal analysis and generation functions, including (sinusoidal oscillator, saw, square, triangle), window function (John, Hamming, etc.), envelopes (ADSR), IIR filters (low pass, high pass, band pass incision), FFT, DFT transform, delay, reverb.)
文件列表:
LICENSE (1056, 2011-09-13)
Makefile (821, 2011-09-13)
bench (0, 2011-09-13)
bench\bench.js (206, 2011-09-13)
bench\deinterleave.js (1028, 2011-09-13)
bench\dft.js (668, 2011-09-13)
bench\fft.js (670, 2011-09-13)
bench\rfft.js (671, 2011-09-13)
dsp.js (66759, 2011-09-13)
examples (0, 2011-09-13)
examples\biquad.html (7496, 2011-09-13)
examples\css (0, 2011-09-13)
examples\css\hot-sneaks (0, 2011-09-13)
examples\css\hot-sneaks\images (0, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_diagonals-small_40_db4865_40x40.png (198, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_diagonals-small_50_93c3cd_40x40.png (162, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_diagonals-small_50_ff3853_40x40.png (193, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_diagonals-small_75_ccd232_40x40.png (162, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_dots-medium_80_ffff38_4x4.png (92, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_dots-small_35_35414f_2x2.png (84, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_flat_75_ba9217_40x100.png (182, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_flat_75_ffffff_40x100.png (178, 2011-09-13)
examples\css\hot-sneaks\images\ui-bg_white-lines_85_f7f7ba_40x100.png (283, 2011-09-13)
examples\css\hot-sneaks\images\ui-icons_454545_256x240.png (4369, 2011-09-13)
examples\css\hot-sneaks\images\ui-icons_88a206_256x240.png (5355, 2011-09-13)
examples\css\hot-sneaks\images\ui-icons_c02669_256x240.png (5355, 2011-09-13)
examples\css\hot-sneaks\images\ui-icons_e1e463_256x240.png (4369, 2011-09-13)
examples\css\hot-sneaks\images\ui-icons_ffeb33_256x240.png (4369, 2011-09-13)
examples\css\hot-sneaks\images\ui-icons_ffffff_256x240.png (4369, 2011-09-13)
examples\css\hot-sneaks\jquery-ui-1.8.custom.css (30879, 2011-09-13)
examples\css\smoothness (0, 2011-09-13)
examples\css\smoothness\images (0, 2011-09-13)
examples\css\smoothness\images\ui-bg_flat_0_aaaaaa_40x100.png (180, 2011-09-13)
examples\css\smoothness\images\ui-bg_flat_75_ffffff_40x100.png (178, 2011-09-13)
examples\css\smoothness\images\ui-bg_glass_55_fbf9ee_1x400.png (120, 2011-09-13)
examples\css\smoothness\images\ui-bg_glass_65_ffffff_1x400.png (105, 2011-09-13)
examples\css\smoothness\images\ui-bg_glass_75_dadada_1x400.png (111, 2011-09-13)
... ...
DSP.js
DSP.js is a comprehensive digital signal processing library for javascript.
It includes many functions for signal analysis and generation, including
Oscillators(sine, saw, square, triangle), Window functions (Hann, Hamming, etc),
Envelopes(ADSR), IIR Filters(lowpass, highpass, bandpass, notch), FFT and DFT
transforms, Delays, Reverb.
Modules:
DFT(bufferSize, sampleRate): Discrete Fourier Transform
Usage:
var dft = new DFT(1024, 44100);
dft.forward(signal);
var spectrum = dft.spectrum;
FFT(bufferSize, sampleRate): Fast Fourier Transform
Usage:
var fft = new FFT(2048, 44100);
fft.forward(signal);
var spectrum = fft.spectrum;
Oscillator(waveform, frequency, amplitude, bufferSize, sampleRate): Signal Generator
* Sine wave
* Square wave
* Saw wave
* Triangle wave
Usage:
var osc = new Oscillator(SINEWAVE, 440, 1, 2048, 22050);
osc.generate();
var signal = osc.signal;
ADSR(attack, decay, sustainLevel, sustain, release, sampleRate): Attack-Decay-Sustain-Release Envelope
Usage:
var envelope = new ADSR(0.01, 0.1, 0.5, 0.1, 0.2, 44100);
envelope.process(signal);
IIRFilter(filter, cutoff, sampleRate): Infinite Impulse Response Filters
* Low Pass Filter
* High Pass Filter
Usage:
var filter = IIRFilter(LOWPASS, 200, 44100);
filter.process(signal);
MultiDelay(maxDelayInSamplesSize, delayInSamples, masterVolume, delayVolume): Delay which feeds back its own delayed signal
Usage:
var delay = MultiDelay(44100*5, 44100*1, 1.0, 0.6);
delay.process(signal);
Reverb(maxDelayInSamplesSize, delayInSamples, masterVolume, mixVolume, delayVolume, dampFrequency): Reverb
Usage:
var reverb = Reverb(20000, 6500, 0.8, 0.5, 0.9, 4500);
reverb.process(signal);
@corban weare.buildingsky.net
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Copyright (c) 2010 Corban Brook, released under the MIT license
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