new BitCrusher(bits, frequency)
downsample incoming signal inspiration from https://github.com/jaz303/bitcrusher/blob/master/index.js
Parameters:
| Name | Type | Argument | Description |
|---|---|---|---|
bits |
number |
<optional> |
|
frequency |
number |
<optional> |
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Extends
Members
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<private> _bits :number
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Type:
- number
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<private> _crusher :ScriptProcessorNode
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Type:
- ScriptProcessorNode
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<private> _frequency :number
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Type:
- number
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<private> _invStep :number
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Type:
- number
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<private> _last :number
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Type:
- number
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<private> _phasor :number
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Type:
- number
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<private> _step :number
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Type:
- number
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bufferSize :number
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the default buffer size
Type:
- number
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context :AudioContext
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A static pointer to the audio context
Type:
- AudioContext
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input :GainNode
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default input of the ToneNode
Type:
- GainNode
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isFrequency
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true if the input is in the format number+hz i.e.: 10hz
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isNotation
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tests if a string is musical notation i.e.: 4n = quarter note 2m = two measures 8t = eighth-note triplet
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isTransportTime
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tests if a string is transportTime i.e. : 1:2:0 = 1 measure + two quarter notes + 0 sixteenth notes
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output :GainNode
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default output of the ToneNode
Type:
- GainNode
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Methods
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<private> _audioprocess(event)
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Parameters:
Name Type Description eventAudioProcessingEvent - Source:
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chain()
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connect together all of the arguments in series
Parameters:
Type Argument Description AudioParam | Tone <repeatable>
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connect(unit)
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connect the output of a ToneNode to an AudioParam, AudioNode, or ToneNode
Parameters:
Name Type Description unitTone | AudioParam | AudioNode - Inherited From:
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dbToGain(db) → {number}
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convert db scale to gain scale (0-1)
Parameters:
Name Type Description dbnumber - Inherited From:
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Returns:
- Type
- number
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defaultArg(given, fallback) → {*}
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if a the given is undefined, use the fallback
Parameters:
Name Type Description given* fallback* - Inherited From:
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Returns:
- Type
- *
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disconnect()
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disconnect the output
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dispose()
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clean up
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equalPowerScale(percent) → {number}
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equal power gain scale good for cross-fading
Parameters:
Name Type Description percentnumber (0-1)
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Returns:
output gain (0-1)
- Type
- number
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expScale(gain) → {number}
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Parameters:
Name Type Description gainnumber (0-1)
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Returns:
gain (decibel scale but betwee 0-1)
- Type
- number
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frequencyToSeconds(freq) → {number}
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convert a frequency into seconds accepts both numbers and strings i.e. 10hz or 10 both equal .1
Parameters:
Name Type Description freqnumber | string - Inherited From:
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Returns:
- Type
- number
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gainToDb(gain) → {number}
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convert gain scale to decibels
Parameters:
Name Type Description gainnumber (0-1)
- Inherited From:
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Returns:
- Type
- number
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interpolate(input, outputMin, outputMax) → {number}
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interpolate the input value (0-1) to be between outputMin and outputMax
Parameters:
Name Type Description inputnumber outputMinnumber outputMaxnumber - Inherited From:
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Returns:
- Type
- number
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logScale(gain) → {number}
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Parameters:
Name Type Description gainnumber (0-1)
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Returns:
gain (decibel scale but betwee 0-1)
- Type
- number
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noGC()
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makes a connection to ensure that the node will not be garbage collected until 'dispose' is explicitly called
use carefully. circumvents JS and WebAudio's normal Garbage Collection behavior
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normalize(input, inputMin, inputMax) → {number}
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normalize the input to 0-1 from between inputMin to inputMax
Parameters:
Name Type Description inputnumber inputMinnumber inputMaxnumber - Inherited From:
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Returns:
- Type
- number
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notationToSeconds(notation, bpm, timeSignature) → {number}
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convert notation format strings to seconds
Parameters:
Name Type Argument Description notationstring bpmnumber <optional>
timeSignaturenumber <optional>
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Returns:
- Type
- number
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now() → {number}
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- Inherited From:
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Returns:
the currentTime from the AudioContext
- Type
- number
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receive(channelName)
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recieve the input from the desired channelName to the input gain of 'this' node.
Parameters:
Name Type Description channelNamestring - Inherited From:
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samplesToSeconds(samples) → {number}
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convert a sample count to seconds
Parameters:
Name Type Description samplesnumber - Inherited From:
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Returns:
- Type
- number
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secondsToFrequency(seconds) → {number}
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convert a number in seconds to a frequency
Parameters:
Name Type Description secondsnumber - Inherited From:
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Returns:
- Type
- number
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send(channelName, amount) → {GainNode}
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send signal to a channel name
Parameters:
Name Type Description channelNamestring amountnumber - Inherited From:
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Returns:
- Type
- GainNode
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setBits(bits)
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set the bit rate
Parameters:
Name Type Description bitsnumber - Source:
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setFrequency(freq)
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set the frequency
Parameters:
Name Type Description freqnumber - Source:
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toFrequency(time) → {number}
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convert a time to a frequency
Parameters:
Name Type Description timeTone.Time - Inherited From:
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Returns:
the time in hertz
- Type
- number
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toMaster()
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connect 'this' to the master output
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toSamples(time) → {number}
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convert a time into samples
Parameters:
Name Type Description timeTone.time - Inherited From:
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Returns:
- Type
- number
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toSeconds(time, now) → {number}
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convert Tone.Time to seconds
this is a simplified version which only handles numbers and 'now' relative numbers. If the Transport is included this method is overridden to include many other features including notationTime, Frequency, and transportTime
Parameters:
Name Type Argument Description timeTone.Time nownumber <optional>
if passed in, this number will be used for all 'now' relative timings
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Returns:
- Type
- number
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toSeconds(time, now) → {number}
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convert Tone.Time into seconds.
unlike the method which it overrides, this takes into account transporttime and musical notation
Parameters:
Name Type Argument Description timeTone.Time nownumber <optional>
if passed in, this number will be used for all 'now' relative timings
- Inherited From:
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Returns:
- Type
- number
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toTransportTime(seconds, bpm, timeSignature) → {string}
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Convert seconds to the closest transportTime in the form measures:quarters:sixteenths
Parameters:
Name Type Argument Description secondsTone.Time bpmnumber <optional>
timeSignaturenumber <optional>
- Inherited From:
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Returns:
- Type
- string
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transportTimeToSeconds(transportTime, bpm, timeSignature) → {number}
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convert transportTime into seconds i.e.: 4:2:3 == 4 measures + 2 quarters + 3 sixteenths
Parameters:
Name Type Argument Description transportTimestring bpmnumber <optional>
timeSignaturenumber <optional>
- Inherited From:
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Returns:
seconds
- Type
- number