Image tuner12/5/2023 ![]() The StroboPLUS HDC is the perfect tuning, ear training and rhythm tool all in one package!įeaturing the largest tuning display Peterson Tuners has ever incorporated into one of their pedal tuners, the StroboStomp HD boasts a high-definition, LCD screen that incorporates a variable color LED backlight. A single tempo map can play an entire score of meter changes, accent patterns, subdivisions, bar colors, silent bars and gradually curved tempo changes like accelerandos and ritardandos. The StroboPLUS HDC can also be used to play thousands of bars of tempo maps, programmable from the Peterson Connect Web App. The highly configurable metronome features precise 0.1 BPM adjustability in eighth notes, quarter notes, dotted quarter notes or half notes, a tempo range of 10-280 BPM, over 100 subdivisions, accent patterns, and polyrhythms. Over 200 exclusive Sweetened Tunings® and Guided Tunings on-board accommodate a variety of instruments, temperaments, and musical genres. Featuring a high-definition, multi-color display with variable color LED backlight, the StroboPLUS HDC display can be seen easily across the stage, bench, studio or classroom. The StroboPLUS HDC’s 0.1 cent tuning accuracy will tune any instrument with the utmost precision. A frame is ArrayBuffer of the image in RGBA format, 8 bits per channel.The StroboPLUS HDC encompasses decades of tuning authority and technology to deliver the ultimate strobe tuner/metronome combo! img: PNG image object (returned by code()).The interpretation of data depends on the current color type and color depth (see the PNG specification). PNG files may have a various number of channels and a various color depth. tabs: additional chunks of the PNG file.frames: additional info about frames (frame delays etc.).ctype: color type of the file (Truecolor, Grayscale, Palette.returns an image object with following properties:.buffer: ArrayBuffer containing the PNG file.Opens PNGs which other libraries can not open (tested with PngSuite). Supports all color types (including Grayscale and Palettes), all channel depths (1, 2, 4, 8, 16), interlaced images etc. your image is too large, and "expanding" to 8-bit RGBA would use too much memory (e.g.saving 16-bit colors (note, that PNG is big-endian, unlike Uint16Array in JS).This function does not do any optimizations, it just stores what you give it. depth: bit depth of pixel data (1, 2, 4, 8, 16).cc, ac: number of color channels (1 or 3) and alpha channels (0 or 1). ![]() A frame is an ArrayBuffer containing the pixel data (corresponding to following parameters) UPNG.encodeLL(imgs, w, h, cc, ac, depth, ) - low-level encode Var png = UPNG.encode(, 200, 300, 0) console.log(new Uint8Array(png)) dta = new Uint8Array(200 * 300 * 4) // or generate pixels manually Var dta = ctx.getImageData(0,0,200,300).data // ctx is Context2D of a Canvas Read RGBA from canvas and encode with UPNG Or just use 0 for lossless / 256 for lossy. Set it to zero for a lossless compression, or write the number of allowed colors in the image. Lossy compression is allowed by the last parameter cnum. It performed quantization with k-means algorithm in the past, but now we use K-d trees. UPNG.js can do a lossy minification of PNG files, similar to TinyPNG and other tools. returns an ArrayBuffer with binary data of a PNG file.dels: array of millisecond delays for each frame (only when 2 or more frames).cnum: number of colors in the result 0: all colors (lossless PNG).A frame is an ArrayBuffer containing the pixel data (RGBA, 8 bits per channel) Regular PNG is just a single-frame animation (single-item array). UPNG.js supports APNG and the interface expects "frames". - a separate minifier app, that uses UPNG.jsĭownload and include the UPNG.js file in your code.Try UPNG.js in Photopea - open an image and press File - Save for web, play with the Quality.It is the main PNG engine for Photopea image editor. A small, fast and advanced PNG / APNG encoder and decoder.
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