You can also mix several sources together to play out of the same destination. While this effect is beneficial in the majority of cases, there are some instances when a compressor would not be desired-for example, someone listening to classical music would want to hear every subtle pianissimo and grand fortissimo. This creates a more pleasant listening experience and prevents strain on the listener’s ears. Compressors boost soft tones and diminish loud tones, normalizing the audio output so that there are no parts that are extremely quiet or extremely loud. There are many filter effects from which to choose one of the most commonly used and most helpful to include in your virtual pedal board is a compressor. The connect() function is metaphorically a cable connecting audio equipment together. Imagine a guitar that’s hooked up to a chain of pedals, which then feeds into an amp.
#Wav files for mac series#
connect source through a series of filters
Var volume = myAudioContext.createGainNode() Var reverb = myAudioContext.createConvolver() Var compressor = myAudioContext.createDynamicsCompressor() You can do this by passing the destination property of your audio context to the connect() function of your source. You can route your source through a complex graph of nodes (which is covered in the next section, Routing and Mixing Sounds), but for now, connect it directly to the destination of your audio context. Now that you have your source buffered or synthesized, for sound to emit from your speakers you need to connect your source to a destination. You can adjust the sound of the emitted tones in the same fashion as adjusting any source, as further described in, Routing and Mixing Sounds. Var waveTable = myAudioContext.createWaveTable(curve1, curve2) Var curve2 = new Float32Array(curveLength) Ĭurve1 = Math.sin(Math.PI * i / curveLength) Ĭurve2 = s(Math.PI * i / curveLength) Var curve1 = new Float32Array(curveLength) Acceptable values for the type property are listed in Table 3-1. Create an oscillator with the createOscillator() constructor, and assign a waveform to its type property. Oscillators are great for creating beeps and single notes. Instead of loading a preexisting audio file, you can generate sounds with the Oscillator object. This can be used, for example, to change the pitch of the video’s sound dynamically while the video plays. Pass a reference to your desired media element to return a buffered source.
#Wav files for mac manual#
If you want to pull the audio of an or element that’s already on the page, you can bypass both the XMLHttpRequest creation and manual buffering steps by calling your audio context’s createMediaElementSource() function. The decodeAudioData() function provides an optional third parameter you can use to catch errors. Instead of calling createBuffer() directly, you can create a buffer by using the decodeAudioData() function on your audio context.
Source.buffer = myAudioContext.createBuffer(request.response, false) Var source = myAudioContext.createBufferSource()
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