2d.wave~ is similar to wave~, but with an additional axis. A given ms range of an audio file will be divided into n rows. Y phase input will determine which row(s) will be used for playback. When the 2d.wave~ object is instantiated as mcs.2d.wave~ its outputs are combined into a single multichannel output but otherwise it functions identically to 2d.wave~.
Try loading a 16-bar loop and setting your rows to be 16 (or 7 for that matter). Try also using a short (150 ms or so) section of an audio file as a 2-d wave table. Set the phasor of one axis to be very fast, and one to be very slow.
Obligatory. Names the buffer~ object whose sample memory is used by 2d.wave~ for its stored waveform. Note that if the underlying data in a buffer~ changes, the signal output of 2d.wave~ will change, since it does not copy the sample data in a buffer~. 2d.wave~ always uses the first n channels of a multi-channel buffer~, where n is the number of the 2d.wave~ object's output channels. The default number of channels, set by the third argument to the 2d.wave~ object, is .
start and end-points [number]
After the buffer~ name argument, you can type in values for the start and end points of the waveform, as millisecond offsets from the beginning of a buffer~ object's sample memory. By default the start point is 0 and the end point is the end of the sample. If you want to set a non-zero start point but retain the sample end as the waveform end point, use only a single typed-in argument after the buffer~ name. If a is connected to the start point (middle) inlet, the initial waveform start point argument is ignored. If a is connected to the end point (right) inlet, the initial waveform end point is ignored. The number of channels in the buffer~ file and the number of rows to be used may also be specified.
Sets the number of output channels, which determines the number of outlets that the 2d.wave~ object will have. The maximum number of channels is 8. The default is 1. If the audio file being played has more output channels than the 2d.wave~ object, higher-numbered channels will not be played. If the audio file has fewer channels, the signals coming from the extra outlets of 2d.wave~ will be 0.
Sets the inital number ofto divide the file into.
Common Box Attributes
In 2nd inlet: Input signal values progressing from 0 to 1 are used to determine which of the row(s) specified by the message will be used for playback. You can invert the phasor~ to reverse the order in which rows are played.
In 3rd inlet: The start of the waveform as a millisecond offset from the beginning of a buffer~ object's sample memory.
In 4th inlet: The end of the waveform as a millisecond offset from the beginning of a buffer~ object's sample memory.
The portion of the buffer~ specified by the 2d.wave~ object's start and end points is scanned by signal values ranging from 0 to 1 in the 2d.wave~ object's inlet, and the corresponding sample value from the buffer~ is sent out the 2d.wave~ object's outlet. If the signal received in the object's inlet is a repeating signal such as a sawtooth wave from a phasor~, the resulting output will be a waveform (excerpted from the buffer~) repeating at the frequency corresponding to the repetition of the input signal.
|MSP Sampling Tutorial 4: Variable-length Wavetable||MSP Sampling Tutorial 4: Variable-length Wavetable|