The most fundamental sound is the sine wave, characterized by a single frequency without any harmonics. A sine wave can be easily recognized by ear, as it sounds very pure, almost like a whistle. As sine waves are made up by a single frequency, they are best suited to test audio systems at a given frequency.
cplayer is a small, statically served, client-side album-based audio player for modern web browsers. You simply drop a build into a directory on your web server, create a manifest.json file that describes the album metadata and track URIs and you’re done.
Fully accessible cross-browser HTML5 media player.
Features:
Supports both audio and video.
Supports either a single audio track or an entire playlist.
Includes a full set of player controls that are keyboard-accessible, properly labeled for screen reader users, and controllable by speech recognition users.
Includes customizable keyboard shortcuts that enable the player to be operated from anywhere on the web page (unless there are multiple instances of the player on a given page; then the player must have focus for keyboard shortcuts to work).
Features high contrast, scalable controls that remain visible in Windows High Contrast mode, plus an easy-to-see focus indicator so keyboard users can easily tell which control currently has focus.
Supports closed captions and subtitles in Web Video Timed Text (WebVTT) format, the standard format recommended by the HTML5 specification.
Supports chapters, also using WebVTT. Chapters are specific landing points in the video, allowing video content to have structure and be more easily navigated.
Supports text-based audio description, also using WebVTT. At designated times, the description text is read aloud by browsers, or by screen readers for browsers that don’t support the Web Speech API. Users can optionally set their player to pause when audio description starts in order to avoid conflicts between the description and program audio.
Supports audio description as a separate video. When two videos are available (one with description and one without), both can be delivered together using the same player and users can toggle between the versions.
Supports adjustable playback rate. Users who need to slow down the video in order to better process and understand its content can do so; and users who need to speed up the video in order to maintain better focus can do so.
Includes an interactive transcript feature, built from the WebVTT chapter, caption and description files as the page is loaded. Users can click anywhere in the transcript to start playing the video (or audio) at that point. Keyboard users can also choose to keyboard-enable the transcript, so they can tab through its content one caption at a time and press enter to play the media at the desired point.
Features automatic text highlighting within the transcript as the media plays. This feature is enabled by default but can be turned off if users find it distracting.
Supports YouTube and Vimeo videos.
Provides users with the ability to customize the display of captions and subtitles. Users can control the font style, size, and color of caption text; plus background color and transparency; all from the Preferences dialog. They can also choose to position captions below the video instead of the default position (an semi-transparent overlay).
Supports fallback content if the media cannot be played (see section on Fallback for details).
Includes extensive customization options. Many of the features described above are controlled by user preferences. This is based on the belief that every user has different needs and there are no one-size-fits-all solutions. This is the heart of universal design.
A web-synthesizer that generates sound from the binary code of any files. It can synthesize sound directly in the browser, or be a generator of MIDI messages to external devices or DAWs, turning any file into a score. All the application code is written in Javascript and along with everything you need is packed into a single .html file of about 750kb. The synthesizer doesn’t need internet, it can be downloaded and run locally on any device with a browser.
The application reads the file sequentially, and due to the high speed of reading and random deviation of reading duration, we can get quite unpredictable generation of timbre nuances, and at certain settings we can switch to granular synthesis.
A free and open-source webapp for learning to play Piano. Play music without needing to learn sheet music. Plug in your MIDI keyboard for the optimal experience.
The Audio File 