wavefile - npm Package Compare versions

Comparing version 10.4.1 to 10.4.2

CHANGELOG.md

 # CHANGELOG
 
+## version 10.4.2 - 2020-01-22
+Better sinc resampling.
+
 ## version 10.4.1 - 2020-01-21
@@ -4,0 +7,0 @@ Faster sinc resampling.

dist/wavefile.js

@@ -23,10 +23,10 @@ try{if(!Uint8Array.prototype.slice)Object.defineProperty(Uint8Array.prototype,"slice",{value:function(begin,end){return new Uint8Array(Array.prototype.slice.call(this,begin,end))}})}catch(err){}var ca="function"==typeof Object.create?Object.create:function(n){function m(){}m.prototype=n;return new m},F;
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+b,c){c=void 0===c?0:c;return ba(a,b,c,c+Math.ceil(b.h/8),!0)[0]}function ka(a,b,c){a.message=a.constructor.name+" at index "+c+": "+b;throw a;}function A(a,b,c){c=void 0===c?!0:c;a=x(a);if(c)for(c=a.length;c<b;c++)a.push(0);return a}function la(a,b){for(var c=8===b?255:Math.pow(2,b)/2-1,d=8===b?0:-c-1,e=0,f=a.length;e<f;e++)a[e]=Math.round(a[e]),a[e]>c?a[e]=c:a[e]<d&&(a[e]=d)}function xa(a){return Math.exp(-a/2*a/2)}function wa(a){return function(b){return(0===b?1:Math.sin(Math.PI*b)/(Math.PI*b))*
+a(b)}}function ua(a,b){return Math.max(0,Math.min(a,b-1))}function ea(a,b){a%=b;0>a&&(a+=b);return a}function va(a,b){var c=2*(b-1);a=ea(a,c);a>b-1&&(a=c-a);return a}function ma(a,b,c,d){d=void 0===d?{}:d;var e=new Float64Array(a.length*((c-b)/b+1));d.method=d.method||"cubic";var f=new v(a.length,e.length,{method:d.method,tension:d.tension||0,sincFilterSize:d.sincFilterSize||6,sincWindow:d.sincWindow||void 0,clip:d.clip||"mirror"});void 0===d.LPF&&(d.LPF=Na[d.method]);if(d.LPF){d.LPFType=d.LPFType||
+"IIR";var h=Oa[d.LPFType];if(c>b){b=new h(d.LPForder||na[d.LPFType],c,b/2);c=0;for(d=e.length;c<d;c++)e[c]=b.filter(f.P(c,a));b.reset();for(a=e.length-1;0<=a;a--)e[a]=b.filter(e[a])}else{b=new h(d.LPForder||na[d.LPFType],b,c/2);c=0;for(d=a.length;c<d;c++)a[c]=b.filter(a[c]);b.reset();for(c=a.length-1;0<=c;c--)a[c]=b.filter(a[c]);oa(a,e,f)}}else oa(a,e,f);return e}function oa(a,b,c){for(var d=0,e=b.length;d<e;d++)b[d]=c.P(d,a)}var ja=[-1,-1,-1,-1,2,4,6,8,-1,-1,-1,-1,2,4,6,8],W=[7,8,9,10,11,12,13,14,
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@@ -33,0 +33,0 @@ function(a,b,c){return C.prototype.F.call(this,a,b,void 0===c?0:c)};N.prototype.R=function(a,b){var c=C.prototype.c.call(this,a,void 0===b?0:b);c=this.i(c);this.a(c);return c};N.prototype.i=function(a){a>this.max&&(a-=2*this.max+2);return a};J.prototype.R=function(a,b){return this.a.R(a,void 0===b?0:b)};J.prototype.F=function(a,b,c){return this.a.F(a,b,void 0===c?0:c)};J.prototype.c=function(a,b,c){if(b){if(!a||16!==a&&32!==a&&64!==a)throw Error("Unsupported type: float, bits: "+a);return this.b(a)}if(!a||

lib/resampler/interpolator.js

@@ -93,3 +93,3 @@ /*
      */
-    this.kernel_ = sincKernel_(details.sincWindow || gaussianWindow_);
+    this.kernel_ = sincKernel_(details.sincWindow || window_);
   }
@@ -191,4 +191,4 @@
  */
-function gaussianWindow_(x) {
-  return Math.exp(-x * x);
+function window_(x) {
+  return Math.exp(-x / 2 * x / 2);
 }
@@ -195,0 +195,0 @@

package.json

 {
   "name": "wavefile",
-  "version": "10.4.1",
+  "version": "10.4.2",
   "description": "Create, read and write wav files according to the specs.",
@@ -76,3 +76,3 @@ "homepage": "https://github.com/rochars/wavefile",
     "test-sr-cubic": "node ./node_modules/mocha/bin/_mocha test/resampler-full/cubic.js -R dot --timeout=1600000",
-    "test-sr-sinc": "node ./node_modules/mocha/bin/_mocha test/resampler-full/sinc.js test/resampler-full/sinc-IIR.js -R dot --timeout=1600000",
+    "test-sr-sinc": "node ./node_modules/mocha/bin/_mocha test/resampler-full/sinc.js test/resampler-full/sinc-IIR.js test/resampler-full/sinc-no-lpf.js -R dot --timeout=1600000",
     "test-umd": "node ./node_modules/mocha/bin/_mocha test/resampler test/dist test/src --umd --recursive -R dot --timeout=240000",
@@ -79,0 +79,0 @@ "test-tsc": "tsc ./test/TypeScript/index.ts && node -r esm ./test/TypeScript/index.js",

README.md

@@ -24,3 +24,3 @@ # wavefile
 - [Create wav files](#create-wave-files-from-scratch)
-- [Read wav files](#use)
+- [Read wav files](#read-wave-files)
 - [Change the bit depth of the audio](#change-the-bit-depth)
@@ -153,2 +153,3 @@ - [Change the sample rate of the audio](#change-the-sample-rate)
   * [Create wave files from scratch](#create-wave-files-from-scratch)
+  * [Read wave files](#read-wave-files)
   * [Add RIFF tags to files](#add-riff-tags-to-files)
@@ -218,2 +219,14 @@ * [Add cue points to files](#add-cue-points-to-files)
 
+### Read wave files
+```javascript
+const WaveFile = require('wavefile').WaveFile;
+wav = new WaveFile();
+// Read a wav file from a buffer
+wav.fromBuffer(buffer);
+// Read a wav file from a base64 string
+wav.fromBase64(base64);
+// Read a wav file from a data URI
+wav.fromDataURI(dataURI);
+```
+
 ### Add RIFF tags to files
@@ -220,0 +233,0 @@ You can create (or overwrite) tags on files with the **WaveFile.setTag()** method.

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