Package MSP

peek~

Read and write sample values

Description

Use peek~ to read and write sample values to a named buffer~. Unlike related objects index~ and poke~, values and indices are specified as Max messages, and the object will function even when the audio is not turned on.

Arguments

buffer-name[symbol]
optional

Buffer name

buffer-channel[int]
optional

Buffer channel to read/write

clipping-enable-flag[int]
optional

If set to 1, then values written to the buffer~ will be clipped to within -1.0 to 1.0. See the clip message.

Attributes

Common Box Attributes

Below is a list of attributes shared by all objects. If you want to change one of these attributes for an object based on the object box, you need to place the word sendbox in front of the attribute name, or use the object's Inspector.

annotation[symbol]

Sets the text that will be displayed in the Clue window when the user moves the mouse over the object.

background[int]: 0

Adds or removes the object from the patcher's background layer. background 1 adds the object to the background layer, background 0 removes it. Objects in the background layer are shown behind all objects in the default foreground layer.

color[4 floats]

Sets the color for the object box outline.

fontface[int]

Sets the type style used by the object. The options are:

plain
bold
italic
bold italic Possible values:

0 = 'regular'
1 = 'bold'
2 = 'italic'
3 = 'bold italic'

fontname[symbol]

Sets the object's font.

fontsize[float]

Sets the object's font size (in points). Possible values:

'8'
'9'
'10'
'11'
'12'
'13'
'14'
'16'
'18'
'20'
'24'
'30'
'36'
'48'
'64'
'72'

hidden[int]: 0

Toggles whether an object is hidden when the patcher is locked.

hint[symbol]

Sets the text that will be displayed in as a pop-up hint when the user moves the mouse over the object in a locked patcher.

ignoreclick[int]: 0

Toggles whether an object ignores mouse clicks in a locked patcher.

jspainterfile[symbol]

JS Painter File

patching_rect[4 floats]: 0. 0. 100. 0.

Sets the position and size of the object in the patcher window.

position[2 floats]
write-only

Sets the object's x and y position in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its size unchanged.

presentation[int]: 0

Sets whether an object belongs to the patcher's presentation.

presentation_rect[4 floats]: 0. 0. 0. 0.

Sets the x and y position and width and height of the object in the patcher's presentation, leaving its patching position unchanged.

rect[4 floats]
write-only

Sets the x and y position and width and height of the object in both patching and presentation modes (if the object belongs to its patcher's presentation).

size[2 floats]
write-only

Sets the object's width and height in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its position unchanged.

textcolor[4 floats]

Sets the color for the object's text in RGBA format.

textjustification[int]

Sets the justification for the object's text. Possible values:

0 = 'left'
1 = 'center'
2 = 'right'

varname[symbol]

Sets the patcher's scripting name, which can be used to address the object by name in pattr, scripting messages to thispatcher, and the js object.

Messages

int

The value stored at the specified sample-index is sent out the peek~ object's outlet. However, if a value has just been received in the middle inlet, peek~ stores that value in the buffer~ at the specified sample index instead. If the sample-index is out of range for the buffer~, no data is read or written.

Arguments:
  • sample-index [int]

float

Floating-point values are converted to int values.

In left inlet: Set the sample to be stored.
In right inlet: Set the buffer channel.

Arguments:
  • sample-index/buffer-channel [float]

list

The value is stored in the buffer~ at the specified sample-index and buffer-channel. If the buffer-channel is omitted, the most recent channel is used. If the sample-index is out of range for the buffer~, no data is written.

Arguments:
  • sample-index [int]
  • value [number]
  • buffer-channel [int]

clip

If set to 1, then values written to the buffer~ will be clipped to within -1.0 to 1.0. Disable by setting to 0.

Arguments:
  • clipping-enable-flag [int]

(mouse)

Double-click to view the buffer~ contents

set

Set buffer~ to read/write

Arguments:
  • buffer-name [symbol]

Output

float

The sample value in a buffer~, located at the table index specified by a float or int received in the left inlet, is sent out the peek~ object's outlet.

See Also

Name Description
buffer~ Store audio samples
buffir~ buffer-based FIR filter
index~ Read from a buffer~ with no interpolation
poke~ Write sample values to a buffer by index
table Store and edit an array of numbers