lossless audio

binaries are used to represent each sample value, also known as the quantization bit. The quantization bits of a sound signal are typically 4,6,8,12 or bits.By sampling frequency and quantization precision can be known, relative to the nature of the signal, audio encoding can only be achieved infinitely close, in computer applications, to achieve the highest level of fidelity is the PCM code, usually PCM conventional

the ' 2>/dev/null ' in ' 2 lines above with your log file names as this:#ffmpeg-y-i $f-vn-f u16le-acodec pcm_s16le-ac 2-ar 44100 $TMP/mcs_a$i 2> $TMP/log.a. $i #{ffmpeg-y-I $f-an-f yuv4mpegpipe-vcodec rawvideo-2> $TMP/log.v. $i All_a= "$all _a $TMP/mcs_a$i"all_v= "$all _v $TMP/mcs_v$i"Let i++Done################################################################################# concatenate all raw audio/video inputs into one

First, use Cheetah browser to visit Cheetah Store (click to enter), choose "Download/Translate" a column will find the "Baidu Music Assistant" plug-in, click Install. Leopard Store installed Baidu Music assistant Plugin Select Add Installation After installation, Baidu Music Assistant does not have any special tips. Need everyone to the Baidu music site to test some. Small series on the installation of Plug-ins before and after the contrast diagram to explain the power of Baidu

Sharpening is usually the final step in the back-end photo, including Photoshop There are many many sharp methods or software available, and high contrast retention is one of the most recommended way, because its procedures are simple, and can be almost lossless image processing, there is a considerable degree of flexibility and control. High contrast retention, as the name suggests, is to filter out some of the high contrast parts to deal with, mainl

Compression We all say lossless compression, preserving dot matrix data.This method compresses the data already close to BMP format picture size, my machine spends approximately 1 seconds processing 200*200 's picture, compared to uncompressed character's compression ratio is 50%. The concrete picture is more dark is compressed better. Reference :Uncompressed text: 295kCompressed text: 143kHigh-order compression: 127kBMP picture (200*200 picture): 117

PHP thumbnails and other proportional lossless compression, fill in blank areas to add color php code 0) {$ dst_w = $ src_width * ($ dst_height/$ src_height); $ dst_x = ($ dst_width-$ dst_w)/2 ;} elseif ($ dst_width/$ dst_height-$ src_width/$ src_height)

- sH) / 2, sW, sH), 0, 0, iSource.Width, iSource.Height, GraphicsUnit.Pixel);g.Dispose();//以下代码为保存图片时，设置压缩质量 EncoderParameters ep = newEncoderParameters();long[] qy = newlong[1];qy[0] = flag;//设置压缩的比例1-100 EncoderParameter eParam = newEncoderParameter(System.Drawing.Imaging.Encoder.Quality, qy);ep.Param[0] = eParam;try{ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();ImageCodecInfo jpegICIinfo = null;for(intx = 0; x {if(arrayICI[x].FormatDescription.Equals("JPEG")){jpegICIinfo = ar

, 0, iSource.Width, iSource.Height, GraphicsUnit.Pixel);g.Dispose();//以下代码为保存图片时，设置压缩质量 EncoderParameters ep = newEncoderParameters();long[] qy = newlong[1];qy[0] = flag;//设置压缩的比例1-100 EncoderParameter eParam = newEncoderParameter(System.Drawing.Imaging.Encoder.Quality, qy);ep.Param[0] = eParam;try{ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders();ImageCodecInfo jpegICIinfo = null;for(intx = 0; x {if(arrayICI[x].FormatDescription.Equals("JPEG")){jpegICIinfo = arrayICI[x]; break;}}if(

); } Else{dstimg. Save (Dstms, System.Drawing.Imaging.ImageFormat.Png);//Save in memory} BS=NewByte[dstms. Length]; Dstms. Position=0; Dstms. Read (BS,0, BS. Length); } } } } } } } Catch(Exception ex) {LogManager.DefaultLogger.Error (Logconvert.parse

Non-destructive adjustment of Linux partition capacity the simple tutorial is only to make the partition adjustment in Linux easier. if it involves partition adjustment in dual systems, especially the addition/deletion of partitions, it is a little more complicated. Gparted-LiveCD is recommended for www.2cto.com. I. Preparation 1 ,... non-destructive adjustment of Linux partition capacity the simple tutorial is only to make the partition adjustment in Linux easier. if it involves partition adjus

This article mainly introduced the PHP solves the picture lossless compression question, now shares to everybody, also gives everybody to make a reference. The code is as follows: Header ("Content-type:image/jpeg"); $file = "111.jpg"; $percent = 1.5; Picture compression ratio list ($width, $height) = getimagesize ($file); Get the original size//scale Size $newwidth = $width * $percent; $newheight = $height * $percent; $src _im = Imagecreatefromjpeg

Problem the default Ctrl + C copy out the image of the serious blur, copied out of the original picture! because the image size has been modified and copied out is blurredSolutions solution put word If this picture is reduced to see what it looks like with a slight CTRL + Cthe picture is very small, the picture is very blurryRestore the picture size to 100% after zooming and then make sure that the picture and the original image is the same,

to JPEG. pngquant --quality=65-80 image.png --speed N, -sN Speed/quality trade-off from 1 (brute-force) to ten (fastest). The default is 3. Speed ten have 5% lower quality, but is 8 times faster than the default. --iebug Workaround for IE6, which only displays fully opaque pixels. Would make pngquant almost-opaque pixels fully opaque and would avoid creating new transparent colors.